2006年7月4日 · I have heads stamped with # 378241. And a build code of B266. I know these are camel hump heads built on February 26, 1966. My question: what were the stock valve sizes …

2011年8月18日 · Your list appears essentially correct with the possible exception of the 350hp/350 L46 on the Corvette. Colvin lists that one as having the 3947041 heads. Also, with …

2010年6月23日 · I have a set of these heads, I was told they are off a 67 302 DZ car, said they were 202 valve fuelie heads. from what i can find out, these were also the same number as …

2011年11月12日 · The chamber design is fairly good, similar to the old camel hump heads of the '60s, though with smaller chambers (58cc vs 64cc). Intake ports usually measure out around …

Small Block Chevy Cylinder Head Identification. 1971-75: 330545 307,350 1.72 1.5001 74 1971-73

1999年3月5日 · The combustion chamber design was a radical departure from anything GM cast in iron prior to the introduction of these heads, and is of a 'double-quench' design. Highly …

2004年6月7日 · Well I thought we had GM double humps but a mechanic who is doing some finishing touches on the car said they were not double hump and "looked like" 624's but he …

2009年7月2日 · Those heads would be just the ticket to improve on the over cammed GM crate engine. (350) Untouched 041's should put it in the 320/330 horse range with that cam. Beware …

2002年8月9日 · - GM 291 Camel Hump Heads, 2.02"/1.6" valves installed, bowls ported to proper sizing with larger valves, exhaust runners ported smooth so they could be polished, no intake …

2009年4月19日 · Yes the 1996-02 L31 350 vortec heads will bolt to ANY gen 1 350 engine. He will just need an 8 bolt vortec style intake rather than the std 12 bolt intake He will also need …