Holly Carb Identification
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 793
Likes: 10
From: Grafton MA
Holly Carb Identification
Hi,
I need some help identifying a holly carburetor. The car is a '71 LT-1. The carb has the following numbers
3989021
LIST 4801-1
2678
The first two numbers make sense to me...i believe these are correct for a '71 LT-1. The bottom number (according tovPrince's 68-72 restoration guide) is supposed to be a date code; first number last digit of the year, second is month of production, and third is week of production.
So that would mean the carb was from a '72?? But if that were the case the top number would be 3999263 for a '72 LT-1. It doesn't make sense. Can anyone help?
Thanks,
Paul
I need some help identifying a holly carburetor. The car is a '71 LT-1. The carb has the following numbers
3989021
LIST 4801-1
2678
The first two numbers make sense to me...i believe these are correct for a '71 LT-1. The bottom number (according tovPrince's 68-72 restoration guide) is supposed to be a date code; first number last digit of the year, second is month of production, and third is week of production.
So that would mean the carb was from a '72?? But if that were the case the top number would be 3999263 for a '72 LT-1. It doesn't make sense. Can anyone help?
Thanks,
Paul
Instructor
Joined: Jun 2008
Posts: 102
Likes: 0
From: Coldbrook Nova Scotia
Your right about the 2678 as being the date code..3 digit codes were used up untill 72 then 4 digits became the norm.i,m just guessing here but your carb could have been a dealer/GM Replacement that was produced in 72 however it is correct in every way for your 71..I,m sure you will get other replies sorry i,m no expert,this is just a guess..
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 793
Likes: 10
From: Grafton MA
Thanks for your help. You must be right...i didn't realize they switched from 3 numbers to 4 in 1972. It appears to be the right carb, just made a year later than the car. I'm assuming the "2" represents the year, still not sure what the other 3 numbers are. If anyone else has info please let me know. Thanks slapshot 496
Pro
Joined: Sep 2002
Posts: 624
Likes: 1
From: Melbourne, Fla. 6 months- New Middletown, Ohio 6 months
Thanks for your help. You must be right...i didn't realize they switched from 3 numbers to 4 in 1972. It appears to be the right carb, just made a year later than the car. I'm assuming the "2" represents the year, still not sure what the other 3 numbers are. If anyone else has info please let me know. Thanks slapshot 496
