Holley date codes

Holley date code question. Is the date code 0953 correct for 1967? aka HurdRep, Denver Dave and keeper of various 55 and 57 Chevys, , 67SS396 Convertible, , 40 Ford, 51 Mercury and a real 32 Ford three window coupe, for balance. 095=day of year. 3=Final digit in year manufactured.

Find many great new & used options and get the best deals for Holley 750 CFM Carburetor List 3310-2 Date Code 0939 at the best online prices at eBay! Free shipping for many products! ... Holley 750 CFM Carburetor List 3310-2 Date Code 0939. 4.2 10 product ratings. tinmanparts (218) 100% positive feedback; Price: $28.004 digit Holley date codes started in 1973. From 1963 to 1972 they were 3 digits. Your date code 0814 translates as follows: 081 is March 21st, 4 is 1974. Your carb is a replacement or newer car take off manufactured on March 21st, 1974. Not original to the car. Sorry!'92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FTI Comp Ported intake, BBK 80mm throttle body ...It's like a "VIN" for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list …A hot rod staple for over four decades! Dual feed fuel inlets assure you get all the fuel you need while its vacuum secondaries and manual choke make it amazingly universal. Plus, its classic Gold Dichromate finish provides serious muscle car looks and durability. The famed 0-3310 is one of the ten original inductees into the Hot Rod Magazine Speed Parts Hall of Fame! It was originally ...Holley Carburetor Numerical Listings Carb. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. No. Kit Kit Needle Jet or Plate Block Block Power Valve Nozzle & Seat Size 0-1848-1 4160 465 37-119 37-933 6-506 122-57 N/S N/S …

Holley EFI V5 firmware update for 7" Digital Dash, Version 5.0.7. 7 in. Digital Dash Firmware - V4. Contains the latest V4 553-106 7" Digital Dash Firmware, includes Digital Dash Tuning Software. 7 in. Digital Dash Firmware - V2/V3. Holley EFI V2/V3 7" Digital Dash firmware and instructions. Get help from other Gear Heads!Service parts assembled 1973 or later will have four digit date codes. 1967 Holley 3916143 CT Stamping Date code "742" (2nd week of April, 1967) 1968 Holley 3923289 DZ Stamping Date code …EFI - Fuel Injection. Carburetors. Carburetor Components. Fuel Pumps Regulators and Filters. Also in Air & Fuel Delivery. Air Cleaners. Air Scoops. Cold Air Intake. Fuel System Kits.This is for One Good Used Original Holley Carburetor PN 3810 with GM# 3906631-DA, correct for the Chevrolet Corvette produced in 1967 with 327 CID and 300 or 350 HP. The date code of 8 B 3, (3rd Week of February, 1968) would suggest this is a service dated carb. It is rated at 585 CFM and has a vacuum secondary and choke that operates off of …Holley's reproduction units are extremely close to the original units and each still look like a 4150 Holley carb cut in half. ... Original list number stamped with current date code; No choke for unobstructed airflow on 500 cfm outboard carbs; Remote choke for easy hook up original vehicle on 350 cfm center carb;HOLLEY 4557 CARB 983 DATE 1969 1970 454 LS6 396 L78 CHEVELLE 396 L78 CAMARO NOVA IT LOOKS PRETTY GOOD MAY OF BEEN REBUILT BEFORE. ... * Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will depend on …

Description. Service Holley 4053 CARBURETOR date code 892. This is a Camaro carburetor. The number above that in the picture is the General Motors id number 3923289-DZ. Restored to its original Holley color, all of the steel hardware has been re-plated to the original finish. Carburetor retains the factory Holley calibration.Speed-Seal and Speed-Flex. Hardline. Also in Plumbing AN Fittings and Hose. Adapters. All Hose Groups. Application Specific Parts. Catch Tanks. Fuel System Components. Hose Ends.Firmware can easily be updated by downloading the latest version from www.holley.com. At the bottom of the page in the left corner under Technical Support, click on “Resource Documents & Library”, then click the “Fuel Injection” tab. Scroll down to find “Holley V2 Firmware”. Once downloaded, firmware can be updated via the1 - Chevrolet. 7 - 1967. 8 - 1968. 9 - 1969. 1 - Jan thru. 12 - Dec. There is another code near the valve stem that indicates the day of the month, 1 - 31. There are many other parts which are date coded. This is only a partial list.Pre-72 Holley date codes. Jump to Latest Follow 1K views 2 replies 3 participants last post by RixLS6 Jan 31, 2007. C. CT Mark Discussion starter 1331 posts · Joined 2002 Add to quote; Only show this user #1 · Jan 31, 2007. Just trying to get confirmation on something. The ...3310 was only used as a factory installed carb on the 1965 Z16 Chevelles, as far as I know. So a Dec. 1968 date code would be an over the counter speed part, either from Chev. or from Holley directly. Jeff Helms. -65 Z16 Survivor (Red/black/white int.) ( Survivor Z16 Picture album)

Nail salons gainesville ga.

Holley Inc. (NYSE: HLLY ), the largest and fastest growing platform in the enthusiast branded performance automotive aftermarket category, today announced the date for the release of its third quarter 2022 financial results. Third Quarter 2022 Results Holley will host a conference call and live webcast on Monday, November 14, 2022, at 4:30 p.m. (Eastern Time) to discuss the Company's third ...It will be like a 10 digit code with all the numbers meaning something but the date is the first thing indicated. 1982 GT. 351w (.060), ported & polished heads with 1.94/1.60 valves, 10.3 comp, stealth intake, 274XE cam, Holley 750 dp, Mallory dist., shorty headers, flowmasters, 4:10 gear, c-4 with 3700 stall converter, subframes, electric fan.450-LS6 (w/L89) Manual M22. Aluminum Heads/Heavy Duty Clutch. (1) There is some discussion about the 454 being sold with aluminum heads. One very respected source says that according to records at Tonawanda, no 454 engines came with aluminum heads. Their records indicate the L89 option was cancelled (not replaced) with the demise of the L78/L89 ...I'll show you how to read the Edelbrock carburetor Julian date codes so you know how old your carb is. Why is this important? The older the carb the potent...

Code dating in which each day is represented by a number. (1-365) Code dating represented by letters and numbers. Samples: A011, A101, 1A, 0011, 1001 = January 1st, 2011 (A) January 1-31 Open Code Code dating with month, day and year are clearly denoted. Samples: 01/01/11, 0101011, 01jan11, = January 1st, 2011 Julian Code DateThe Holley code tells when it was actually cast. It is common that a 1963 design has a casting date of 1968. This is the numerical listing, aka Holley part number. This is what your carburetor is. List 3793, 4118, 2143-1, 4412 pictured. Ok last/bottom line is date code. Early versions had a three digit code.For a correct carb date, you need to look for 3 digit that start with a 5. So if your car's birthday for instance March 2nd, 1965 then you want a carb dated 531 (5=1965, 3=March, & 1=1st week) or earlier. If you are concerned with NCRS then you look for something up to 6 month earlier than the build date is normally acceptable.#1 · Mar 23, 2015. A friend of mine has a Holley 3997788 6238-1. The numbers show it's a 1972 Z/28 with auto trans carb. The date code is a four digit code (1354) so it's a …Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... Date code: 20090101 Firmware version: 0.0 Build 158 profile # 1.I have read conflicting information on what date codes were used for original and replacement Holley carbs during the 70's. I just purchased a carb that the seller stated up front is a factory replacement carb and not to be confused with a correct date coded carb that can be used on a numbers matching car. The stamping on the air horn reads ...Now it shows EFI: Ser 69968 in the lower left corner. Everything seems to be correct now, but let me know if it isn't. It went from this: 7" Digital Dash - SW 4.0 build 37 HW rev D2; FW ver: 1.0 build 130. To this: 7" Digital Dash - SW 1.0 build 2 HW rev D2; FW ver: 1.0 build 130. Metro Black & White.Guys, I am looking for a correct date coded Holley 4088 for the GTE. I have been offered one with a late October 67 date code, and another with a late March 68 date code. The car is build date April 8 1968 Fortunately, when the original owner replaced the carb (The current carb on the car is a Holley 3310-2), they retained the original metal …Below the list number is a date code that will contain no more than four (4) digits. ... Holley® Performance Products 1801 Russellville Road Bowling Green, KY 42101 1-270-781-9741 1-866-464-6553 www.holley.com 199R10013 Revision Date: 1-24-14. Author: Wendy Fleming Created Date: 1/24/2014 9:23:25 AM ...Holley date code question. Is the date code 0953 correct for 1967? aka HurdRep, Denver Dave and keeper of various 55 and 57 Chevys, , 67SS396 Convertible, , 40 Ford, 51 Mercury and a real 32 Ford three window coupe, for balance. 095=day of year. 3=Final digit in year manufactured.

Date codes are found on the carburetor air horn. Expect to see three lines stamped in factory installed and service replacement Holley carburetors-Ford part number, Holley List number, and the ...

Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... Date code: 20090101 Firmware version: 0.0 Build 158 profile # 1.The Sniper EFI broadcasts data channels to the Holley EFI 7" Digital Dash via CAN bus connection. Parameters not connected to the Sniper EFI can be monitored on the digital dash using the optional I/O harness part number 558-432. Use of the I/O harness will also allow two ground switched outputs from the dash. ... Created Date: 8/11/2017 12 ...C1 & C2 Corvettes - Help with Holley carb date code - I have a 4160 style carb that came in a box when I bought my '66, 300HP, non-AIR, small block coupe last year that was alleged to be the original carb. I compared the info on the air horn to the data in the NCRS judging guide and everything checks out, except I...Feb 23, 2018 · How do I read date code on Holley 2818-1. Guys, I have looked on the web to try to read the date code on a 2818-1 carb that I bought for my 65 L79 engine, the numbers below the 2818-1 are "0619" some of the information I have seen give the front number as the year & others give the last number as the year, Thanks in advance for any help. Don. The carb build date codes were the same as the previous two years used on the #3447 carb ears and tags. Most of the production line #3705 carb tags did not have a stamped date code on them, so don't worry if your #3705 carb tags aren't date coded. ... These Holley carbs look pretty much just like most vacuum secondary Holley model 600 style ...I managed to obtain a copy of a page of the original engineering data sheet from Holley dated November 17, 1964. They were released to manufacturing December 2. Original, S1MS three digit date code carbs like yours are quite rare. It seems there were some date codes produced in greater numbers than others.The biggest change was the jump between the 3259 and 3259-1 main number. The 3259-1 has design features to delay the opening of the secondaries until a higher primary flow rate is reached and close the secondaries sooner as compared to the 3259 design. This makes a List-3259-1 much more suitable for a little 289 than a List-3259.Apr 20, 2011 · The date codes on factory Holley carbs were 3-digits up to 1973, and 4 digits thereafter. The 3 digit format was year-month-week, and the 4 digits were julian date (day 001 to 365 of the year) and last digit of year (doesn't clarify which decade though).

Free stuff in charlottesville va.

Is usc liberal.

The guy on the carb. forum explained the code like this- year-month-week. the year part is easy the month part is where it gets tricky. Jan.to Oct. is 1 thru 0 and Nov.-Dec. is A and B . A date code of 6B2 would be 1966-Dec.-2nd week. The complete # for this carb. is C3AF-9510-BJ List-2805 he thinks this could be from A 67 GT500 with 427 ,also ...Emission Code, 3. Finish, Gold Dichromate. Fuel, Gasoline. Fuel Inlet, Dual. Marine ... Stay up to date with the latest releases, events, promotions and more.Apr 23, 2017 · The Holley 3245 carb was only used on the 1966 Chevy II L79. Carbs built for factory install on those cars had 3 digit date codes. In 1973, Holley went to 4 digit Julian calendar date codes. 047 is February. The '6' is not likely 1986 or 1996, so it makes sense it's 1976. I don't believe there's any record of 3245 carbs on any new GM vehicles ... Speed-Seal and Speed-Flex. Hardline. Also in Plumbing AN Fittings and Hose. Adapters. All Hose Groups. Application Specific Parts. Catch Tanks. Fuel System Components. Hose Ends.The difference is in the front metering block. I have a '67 4-speed carb on my 390 GTA. It works fine, but I want the correct automatic version as listed in my signature (late '66 or early 1967 Holley LIST 3794 C7OF-9510-B for S code 390 GTA or just the metering block 5230). What is the date code on the automatic carb? WANTED PARTS: ☆ '67 ...To check and/or change the screen resolution of you desktop, click on the "Start" button on the task bar, select "Settings" and then "Control Panel" and finally "Display". The Display Properties dialog box will be displayed. Next click on the "Settings" tab in the Display Properties dialog box.The format is as follows:YDDDWhere: Y is the last digit of the year. DDD is the day of the year (001 to 365) Decode the year: The last digit of the date code represents the year. For example, if the last digit is "3," the carburetor could have been produced in 1973, 1983, 1993, or 2003. You may need to consider other factors, such as the ...The guy on the carb. forum explained the code like this- year-month-week. the year part is easy the month part is where it gets tricky. Jan.to Oct. is 1 thru 0 and Nov.-Dec. is A and B . A date code of 6B2 would be 1966-Dec.-2nd week. The complete # for this carb. is C3AF-9510-BJ List-2805 he thinks this could be from A 67 GT500 with 427 ,also ...Holley Date Codes. Author CJ Downloads 0 Views 493 First release Nov 12, 2022 Last update Nov 12, 2022 Rating 0.00 star(s) 0 ratings Join the discussion. More resources from CJ. CJ I6 258 / 232 Typical Vacuum System 49 States. CJ I6 258 / 232 Typical Vacuum System 49 States. Resource icon.Who says a date night at home can't be romantic? We've got 12 ideas to make your at-home date night a hit. Advertisement Traditional date night ideas like dining out and seeing a m...Got some vocab words you need to learn? Try Quizlet, a free interactive learning tool. Got some vocab words you need to learn? Try Quizlet, a free interactive learning tool. Here's... ….

C1 & C2 Corvettes - Holley 3810 date codes????? - I have two Holley carbs. both numbered 3906631-DA list 3810. But the date codes are 943 and 984. I checked all of my books and only the 67 corvette is listed using this number, does anyone have info. on other Chevrolet applications using these numbers?.Holley Carburetors 4 digit Numeric date codes. This sample casting number from a 1970 carburetor with date code 0995 . 09 9 5. Day of the year . 099 = 99th day of the year . 1 to 365 099 5. Year . 5 =5th year. 1975, 1985 or 1995 : More then likely this carburetor was built on the 99th day of 1975 .Nov 28, 2013 · Steve R. 6267 posts · Joined 2000. #3 · Nov 29, 2013. The 1908 directly under the list number is the date of manufactur. Holley uses the jullien date code, 1908 corresponds to the 190th day of a year ending in 8. After every major design change Holley changes the number after the dash (-), hence this carb was manufactured after their 7th ... The code numbers of a Holley carburetor are usually located on the side of the air horn. You will find that the Holley model number of the carburetor is there, along with the automaker part number if it is factory issued, as well as a date and application code.The date code still resides at the end of the Tire Identification Number. The first two digits of the date code are the week of production and the last two are the year of production. This helps to clear up the single-digit year confusion that existed before 2000. So, a tire with a date code of 4823 was built in the 48th week of 2023.Feb 27, 2009 · And yes, the date codes on Holley carburetors are decoded as follows: first number is the year (in this case 1969), second number is the month (in this case 4 = April), and the third number is the week it was produced (in this case 2 = second week). My understanding is that prior to 1973 Holley used 3 digit date codes, after that they were 4 digit. 3 digit codes are year (first digit), month (second digit) then week (third digit). So your 042 date code would be 1970, April, second week . Last edited by Velox; 08-28-2019 at 09:37 PM. Reply Like 08-28-2019, 09:52 PM ...Re: Holley 3310 date code. Joe; The 3310 was originally installed on the `65 Chevelle Z16, but it also became an over-the-counter universal replacement carb as well, and is still produced by Holley today, although the current version has little in common with the original version save for the LIST number.Contains the latest V3 touch screen firmware. 3.5 in. Touchscreen Firmware - V4. Contains latest V4 firmware and installation instructions for the 553-108 3.5” Touch Screen. 3.5 in. Touchscreen Firmware - V5. Holley EFI V5 Firmware update for 3.5" TSLCD. 3.5 in. Touchscreen LCD User Manual.All Holley power valves are stamped on the side or, as in this case, the metal reinforcement near the center. You can see an "8" and a "5" making this an 8.5"Hg power valve. The stamps on the top are date codes. The range for standard Holley valves is from 2.5 to 10.5 "Hg (inches of Mercury). Holley date codes, Med.Rise INTAKE. Aftermarket replacement. Holley list this carb as "1968 Shelby-American 289 Engine". Ford and Mustang Holley 4150 carburetor. Holley casting numbers decode and identification. Correct list numbers and correct date codes for all holley carburetors. Ford Mustang Galaxie Fairlane Torino Mercury Cougar Cyclone Boss Applications., Save $$$ w/ Holley Coupons: 33 Holley Coupons and Promo Codes tested and updated daily. Find the latest Coupon Codes and discounts for May 2024 on HotDeals.com. Deals. Coupons. Stores. Travel. Mother's Day Sale ... Expire Date Join Holley.com Today and Receive Additional Offers: $10.09 Average Savings: 06 May: Great Offer for Holley: 10% …, Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... Seems kind of stupid to have errors codes and not have any info available on Holley website or in manual as to what their application is. ... Date code: 20180830 FW Ver: 4.0 build 110 Profile #1 ..., The suffix code F0415ZI stands for F= Flint, Michigan engine plant, 04=April, 1966, 15=day of April and ZI=Chevy II special hi performance with manual transmission. The ZI suffix code will not be found on any other car, except the 66/67 Chevy II L79. D76 is the casting date of the block. D=April, 7= day of the month and 6=1966., if the carb has a 4 digit date code it is not made is the 1960's and is worth less than a 60's made Holley 715. Four digit date date: first number is the year made, last three digits are the day of the year. ex: 7122 = carb made in 1977 (or 1987, or 1997, etc) and the 122nd day of the year. Z., Tweet. #1. Holley Metering Block Identification (2) 07-01-2014, 08:39 AM. I have 2 metering blocks that I need identified and what they will work on: #1 - 10566-H primary block. #2 - 11166-3 secondary block. Thanks for your help. Dave Rink., Jul 27, 2015 · C1 & C2 Corvettes - 1965 Corvette date codes/VIN & trim tags, stamp pad. ... ( lift, duration), roller tip rockers, correct Holley carburator, new correct air cleaner ... , Date codes on Holley FE Carburetors Date codes on Holley FE Carburetors. my68gt. 109. my68gt. 109. Post Sep 26, 2012 #1 2012-09-26T17:13+00:00. My 68 Mustang GT Fastback (S code) I purchased quite a few years back and recently restored is all original except for the Holley carburetor (appears to be a "period" service replacement). I have begun ..., Decoding Ford Carburetor date codes . Autolite carburetor use a 3 or 4 digit date code system. Starts with the year on left, a letter in the middle for the month and a 1 or 2 digit number on the right depicting the day of manufacture. this tag is typical of an Autolite 4300 carburetor, C8ZF-A with date code 8B13., 1971 Mach 1 w/408C stroker. Sep 7, 2014. #2. I have looked everywhere and I still can't fully identify the Holley carb in my 351C. Obviously is not the original one because the date code indicates 1993. Below the date code it says "6R 4585 B", but this has not helped with full ID. The air horn has "3350" and what it appears as a scratched set ..., by caschnd1 » Tue Jul 26, 2005 3:00 pm. If you figure out what type of transmission case you have (what year ranges it was manufactured) you will be able to determine if J9 means Oct-1939, Oct-1949, or Oct-1959. You many need to look at the kicker cover for clues too, but that only helps if the kicker cover is the original one., C3 General - Holley carb date of manufacture - I have just purchased a used Holley carb, list# 1850-3, date code 0069. Does anybody know how to tell if this carb was manufactured on Jan. 6, 1969, 1979, 1989, 1999, or 2009?, Date codes and part numbers for 6-Barrel/Six-Pack applications. The carbs all have “list numbers” and date codes stamped on them. The date codes are 4 digits. The first three are for the day and the forth is the year. The “list numbers” for 1969½ carbs are as follows: Front outboard carb 4-speed and auto – List – 4393, It could be 1979, the four digit date code started in the seventies. Usually all the seventies carbs have slotted bowl screws, not the hex that's seen on later Holley's. It is a service carb for the 67 Corvette but correct in every way. I would not worry about it and just use it for yourself., 327-4. 350-L79. H.D. 3-speed or 4-speed. A total of 116,551 6-cyl engines were installed; 49,608 194cid and 66,943 230cid engines. A total of 330,813 8-cyl engines were installed; 209,338 283cid, 46,230 327cid, and 75,245 396cid engines. There is no breakdown of engine type or size by specific series/model other than 6-cyl. vs. 8-cyl., Holley List 2818, 1964 Corvette Carburetor, Holley 3849804 List 2818, Holley 4 Barrel Corvette Carburetor, 4099 Metering Block, 4094 Metering Block ... Back in stock soon Date code reads 471 call for completion date . Out of stock. SKU: HOL24-2818 Category: Carburetors-Restored. Description Additional information, Significant new changes means something is wrong. • Check the fuel pressure and fuel system components for leaks and restrictions (wiring, plumbing & venting). • Use the appropriate amount of timing advance at idle. Stock cam - 20°, performance cam - 25°, radical cam - 30°., Holley Coupon Codes 2023. 16 Verified Coupons - last updated: October 22,2023. SUBMIT A COUPON. 12% OFF. 12% Off with Holden Promo Code. Verified • uses., If your tires were made before the year 2000, the date code will be only 3 digits - the first two digits again listing the week of the year, and the last digit being the last digit of the year of the tire's manufacture. This means a date code of "529" could mean the tire was manufactured in December 1999, or December 1989 - or even ..., Decoding Ford Carburetor date codes . Autolite carburetor use a 3 or 4 digit date code system. Starts with the year on left, a letter in the middle for the month and a 1 or 2 digit number on the right depicting the day of manufacture. this tag is typical of an Autolite 4300 carburetor, C8ZF-A with date code 8B13., C1 & C2 Corvettes - Holley 3810 date codes????? - I have two Holley carbs. both numbered 3906631-DA list 3810. But the date codes are 943 and 984. I checked all of my books and only the 67 corvette is listed using this number, does anyone have info. on other Chevrolet applications using these numbers?., Jan 19, 2017 · It's like a "VIN" for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it. The date code will be right below it. , jimne1 Discussion starter. 3 posts · Joined 2009. #1 · Nov 16, 2009. I'm trying to understand the date code on a 3310-1 Holley. All I know is it is a true 780 CFM with downleg boosters and it came off of a GM car. Byeond that I'm stumped. The date code stamped beneath the 3301-1 is shown as 241. I have yet to find any reference that would ..., What type of carburetor are you looking for? 2-Barrel. 4-Barrel. Gasoline. Methanol. E-85. Automotive. Marine., 1968 390-4V Holley 4150 carburetor, automatic C6 transmission - All 50 states. C8OF-9510-D stamped on the carburetor air horn. Holley list # 3796, 600 cfm. ... Carburetor - Holley 4150 - list #4088 600 CFM - Date Code 962 - 427 GT-E - Automatic Transmission - Core ~ 1968 Mercury Cougar GT-E. 1968 Mercury Cougar. 0 . Price: $817.97., Description. Original Holley 3247 Corvette Carburetor 1966 date code 641. This is carburetor with for a 1966 Corvette with a 427 engine making 425 hp.The General Motors number is 3886101-EI. Restored to its original Holley color, all of the steel hardware has been re-plated to the original finish. Carburetor retains the factory Holley calibration., March 7, 2024 by Mike McMaken. Holley does offer a military discount. It provides 10% off on all products purchased on the Holley website to active duty and retired military personnel. See 3,000+ New Gun Deals HERE., Holley started using four digit date codes in 1973. So I second what Velox said about the year of manufacture being 1978, 1988, etc. Holley has made special production runs of various carburetors over the years. I have an undated List 3810 that was purchased new in 2006., For best results, Holley strongly recommends an in-tank pump. Installing the fuel pump in the tank results in quieter operation, less chance of cavitation and a reduction in pump temperature. If mounting the pump in the tank is not an option, install the pump as close as possible to the tank. Within 2-feet of, This carburetor was made by Holley , The Holley Brothers Company was started in 1905 in Detroit Michigan then became the Holley Carburetor Co . It is a H4-4150 . This carburetor has a part number of R4555 LIST 4555 and used on 70 LT1 780 cfm . Check here for specific Muscle car Info. Referenced by ; Holley R4555 or LIST 4555., Topic: Holley date codes: Fastymz Moderator . Posts: 20708 From: Reno Nv USA M&M#1240 Registered: Apr 2001: posted 06-14-2004 03:21 PM Does anyone know how to read Holleys date codes on the carbs ?-----SCOOP. oddly obsessed with big scoops on little Mustangs. 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. ..., To check and/or change the screen resolution of you desktop, click on the "Start" button on the task bar, select "Settings" and then "Control Panel" and finally "Display". The Display Properties dialog box will be displayed. Next click on the "Settings" tab in the Display Properties dialog box., The Holley EFI 6.86" Pro Dash is customizable with a variety of gauge and indicator screens that can be ... GPS lock and to keep the current date and time. "Clean" = a connection that does not share the same connections as "dirty" sources such as coils, a starter, solenoids, fans, etc., that have a lot of electrical noise or solenoid ...