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Re: Replacement engine revisited.
Quote:
Originally Posted by garyd1961
I agree but would like to add the 290 hp motor has 8:1 compression not 8.5:1 as sometimes advertised and a cam made for an 11:1 compression engine. With this and poor flowing heads it has poor combustion and waste a lot of fuel out the exhaust. To get the 290 hp you have to rev it to 5200 rpm, in the normal driving range it just doesn't perform well.
The L31-R vortec engine has 9.4:1 compression with the best flowing heads Chevrolet ever made. It will make more HP than the 290 engine even though it only has a 214/228 lift cam which means it runs smooth and has a lot of low end power. It's also a hydraulic roller cam and can easily be upgraded to make 400 hp with a cam swap and minor head work.
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That is the best motor for the money out there. IF you don't mind running an electric fuel pump and a juice clutch.
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1982 K10 SWB
1987 V20 - Sold - Doh!
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