i was wondering about putting pontiac heads on a fresh 406. are these bolt on or do you need to buy aftermarket or do a bunch of machine work for them to fit? If we not run some we wont to buy some world heads. what would you recommend. we are runnging 10.8:1 ratio with 64cc. we like the sportsmans 2 or the motown.. thanks for your time *tyler*
2007-03-31 11:59:54 · 4 answers · asked by 84 crew cab 4x4 1 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
I assume you're building a Chevy SB 400 thats been bored 30 over? That will make a 406. The traditional Pontiac parts from '79-earlier will not fit a chevy engine. There were some aftermarekt chevy heads marked "pontiac" that were meant for big block chevy engines, not Pontiac.
Sportsmans, Dart, Edelbrock all make good aluminum heads for SBC. You can run 1/2 point to 1 point higher compression with aluminum vs iron heads due to how aluminum pulls heat from the chamber. Head selection depends on what the engine's intended use is, and the budget.
2007-03-31 13:29:59 · answer #1 · answered by electron670 3 · 0⤊ 0⤋
What's a 406? The only 406 was a 62-63 big old Ford motor available in their full sizes cars. What year Pontiac heads are we talking about? What engine are you planning to attempt to bolt them to?
2007-03-31 19:07:50 · answer #2 · answered by Country Boy 7 · 0⤊ 0⤋
pontiac heads won't fit on a chevy motor, summit racing sell many differen't heads that will work on your chevy from aluminum to cast iron, the choice is yours, give them a call.
2007-03-31 19:30:13 · answer #3 · answered by mister ss 7 · 0⤊ 0⤋
it depends some pontiacs had chevy engines in them
2007-03-31 21:56:18 · answer #4 · answered by oldmanarnie 4 · 0⤊ 0⤋