Header & Carb size help
I need some help here on what brand / size headers & carb sizing (Long post): I have read and researched until my eyes bled (including this forum) , to find out what size & brand headers I should use (& carb size) on my 67 chevelle SS 396, factory 4 spd & rear end 3:31. I know the header primaries will be either 1 3/4 or 1 7/8.
I do not want to go smaller than a 700 cfm carb.
It will be a street car restored original, except for intake, carb, & exhaust. I will attempt to retain an original look.
I actually want to pattern it after a 66 chevelle 396 that I had back in 1980. The headers that I had then had a removeable drivers side primary tube for #5 cylinder that would slip in & out, for spark plug removal.
I wish I could remember what brand or size these headers were, but they worked great.
This car had a Crane hydraulic (about 4 steps above factory) that idled about 850 rpm and made power up to 6000 rpm, but worked best when shifted at 5600 rpm. Carb was a 750 Holley - this car drove like a dream, focused on low / mid-range power, and hauled butt. No body could figure out why a 10:1 compression car was so fast..., but I was in my glory.
The downfall to this car was when I put a Holley 650 on it, due to a cracked throttle body on the 750. I was sick - throttle response was good but power hit a wall at 4800 rpm, no more 3 gear posi burn outs after that. It just didn't have the power.
Thanks in advance, Steve
Last edited by guitargeak99; Dec 23rd, 12 at 6:43 PM.