81 corvette heads
Thread Starter
Racer
Joined: Jan 2002
Posts: 308
Likes: 0
From: central square NY
81 corvette heads
Hi, i have a 81 corvette and i was hoping somone would know what the cc's are on the intake runner of the heads, i am in the procces of overhaualing it. so any info or place i can find this info would be grately helpful.
Thank you, Randall Graves
Thank you, Randall Graves
Burning Brakes
Joined: Dec 2000
Posts: 1,183
Likes: 2
From: Des Moines Iowa
Re: 81 corvette heads (VettePaul)
The 624 casting head, which is what came on the '81, is a 76cc thin casting smog head, prone to running hot and cracking, and as has been said, probably has an intake volume of something around or under 160cc. The 624 has an extra bend / obstruction in the intake runner by the valve guide boss, or something like that which makes it worse than other small block OEM heads.
624 heads not recommended for performance applications, go after market or for something like the 993s (76cc) or 186s (64cc), if you want chevy heads.
624 heads not recommended for performance applications, go after market or for something like the 993s (76cc) or 186s (64cc), if you want chevy heads.
