Rules Verification for a Newbie

Tony Corley · 06-06-2025, 12:50 PM

As I've posted in other places on here, I recently purchased an older built GT/PA car that I'm just starting to go through and verify what I have. As far as carburetors are concerned, am I correct that as long as it is the same brand (Autolite 4100 in this case), and has the correct venturi and throttle plate sizes called for, manufacturer date code doesn't matter? In this case, my engine is a 1964 based 289, but the current carb is a C6 PF (1966 289 carb). Has the correct size centuries and throttle plates as the '64 should have. I know to some of you that have been doing this a long time, these questions probably seem silly. I would never consider cheating, but I would hate to show up at a race and be disqualified because I didn't fully understand the assignment. So thanks in advance for answering the dumb questions.

06-06-2025, 12:50 PM	#1
Tony Corley Member Join Date: Nov 2011 Posts: 263 Likes: 41 Liked 61 Times in 25 Posts	Rules Verification for a Newbie As I've posted in other places on here, I recently purchased an older built GT/PA car that I'm just starting to go through and verify what I have. As far as carburetors are concerned, am I correct that as long as it is the same brand (Autolite 4100 in this case), and has the correct venturi and throttle plate sizes called for, manufacturer date code doesn't matter? In this case, my engine is a 1964 based 289, but the current carb is a C6 PF (1966 289 carb). Has the correct size centuries and throttle plates as the '64 should have. I know to some of you that have been doing this a long time, these questions probably seem silly. I would never consider cheating, but I would hate to show up at a race and be disqualified because I didn't fully understand the assignment. So thanks in advance for answering the dumb questions.