I've seen powerful pontiacs with demons but i know holleys pack a punch too. i am building a '66 389 of a GTO but all i need is the carb...what might be better for a cam with 237 duration
@plopzzzzzz 1972 7F6 455 HO. Exhaust crossovers are filled with a complete port job. Doug Nash intake. I ported and gasket matched everything. Sorry I do not have flow numbers readily available. Sorry it took me so long to respond.
I have a set of 72 455 HO heads, used but in the GM boxes.....wonder what they are worth?
Bassman19013 7 months ago
them 70s pontiacs are so bad ass if you ask me pontiac was the most suporior muscle car brand in the 70s
bubub56 9 months ago
What kind of compression is that thing pushing now? I know stock was in t he mid 8s.....are you using a domed piston?
dnazz32 1 year ago
@dnazz32 11.5 compression with Ross domed forged pistons.
cmwilkecm 1 year ago
@cmwilkecm thanks for sharing this pure pontiac!
dnazz32 1 year ago
I've seen powerful pontiacs with demons but i know holleys pack a punch too. i am building a '66 389 of a GTO but all i need is the carb...what might be better for a cam with 237 duration
marioalonsojr 2 years ago
@marioalonsojr You could go with a 750 jetted rich or an 850 jetted lean. Or have you already decided? Sorry about the wait.
cmwilkecm 1 year ago
it will be nice to see old TRICK '66 rippin' up the track again, plenty of victims fell to the wicked trick '66 on hy100 back in the day.
5151965 2 years ago
7F6 i guess,what is max flow at 28 inches?
plopzzzzzz 2 years ago
@plopzzzzzz 1972 7F6 455 HO. Exhaust crossovers are filled with a complete port job. Doug Nash intake. I ported and gasket matched everything. Sorry I do not have flow numbers readily available. Sorry it took me so long to respond.
cmwilkecm 1 year ago
Sounds wicked!!!
What heads?Ported iron?
plopzzzzzz 2 years ago