The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Tom · 05-25-2003, 05:23 PM

Ok to answer your questions in order:
It could have either a 2 or 4bolt main

Lots of 454's can take a .125" overbore, but not all. The only way to know is a sonic check. All 454's can go at least .060" over. Only go as much over as needed when rebuilding, usually .030"

It would be fairly cheap to get 400hp. It should have oval port heads, so a good rebuild using 9.5:1 compression, a cam with about 230-235*@.050 duration, 2.19/1.88 valves in the heads,a RPM intake and 1 3/4" headers should get you 400hp.

Steel is better then cast as far as most everything is concerned.

As for a fair asking price, I have no idea. Way too much unfortunatley [for people like me!]

05-25-2003, 05:23 PM	#2
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,760	Ok to answer your questions in order: It could have either a 2 or 4bolt main Lots of 454's can take a .125" overbore, but not all. The only way to know is a sonic check. All 454's can go at least .060" over. Only go as much over as needed when rebuilding, usually .030" It would be fairly cheap to get 400hp. It should have oval port heads, so a good rebuild using 9.5:1 compression, a cam with about 230-235*@.050 duration, 2.19/1.88 valves in the heads,a RPM intake and 1 3/4" headers should get you 400hp. Steel is better then cast as far as most everything is concerned. As for a fair asking price, I have no idea. Way too much unfortunatley [for people like me!] __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.