big block 990 rectangular heads
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 768
Likes: 25
From: Cape Cod
big block 990 rectangular heads
These are Chevy Big block 990 1970 454 rpo LS6 iron head
with rectangular open chamber design p/n 6260482 #6272990
sold as bare or i can put on the valves, springs, rockers back.
Forget the oval port heads, There's too much air & fuel restriction with them, If you want to wake up your big block and make big HP and TRQ
Great shape, perfect for restoration project.or all out racing.
thanks much
617-593-9129
$500.00
with rectangular open chamber design p/n 6260482 #6272990
sold as bare or i can put on the valves, springs, rockers back.
Forget the oval port heads, There's too much air & fuel restriction with them, If you want to wake up your big block and make big HP and TRQ
Great shape, perfect for restoration project.or all out racing.
thanks much
617-593-9129
$500.00
Last edited by leo12; Mar 3, 2011 at 04:29 PM. Reason: spelling
