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-   61-66 Big Pontiac TECH (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=428)
-   -   66 YH 421 automatic carb and intake (https://forums.maxperformanceinc.com/forums/showthread.php?t=865284)

necdb3 03-16-2023 10:12 PM

66 YH 421 automatic carb and intake
 
Who owns a 66 YH motor with the original intake and carb? Looking to see if it has a divorced choke, what carb number, what intake number. Any help much appreciated.

Dave

tom s 03-16-2023 10:34 PM

I thought the big cars got AFBs?Tom

necdb3 03-17-2023 08:41 AM

Quote:

Originally Posted by tom s (Post 6414918)
I thought the big cars got AFBs?Tom

I believe you are correct but I want to make sure, hopefully from an original car.

John Milner 03-17-2023 10:29 AM

1 Attachment(s)
Here is a picture of the original intake/carb that I ran for a while on my 66 YH 421 that I put in my 66 Tempest. The engine came out of a wrecked 66 Catalina. The air cleaner is from a GTO but the intake and AFB carb are correct and original to the engine. The carb number is 4037S. I can take a closer picture of the choke setup if you would like. The choke system has a tube that comes from the heat crossover and goes to the choke stove to heat the choke coil up.

tom s 03-17-2023 11:41 AM

typical hot air choke AFB.Tom


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