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Re: 350/290 crate, torque converter suggestion.
Quote:
Originally Posted by RustyPile
That cam is oh so wrong for that engine on so may fronts.. Low compression, small valves, etc.. The lift is ok for heavy vehicles that need low end torque to get moving. But the duration kills off what torque is there, plus that center line isn't helping.. Changing to a "milder" cam would do wonders for that engine.. Other wise, heads with bigger valves and/or smaller chambers are necessary.. Compression needs to be at least 1.5 points higher.. And as someone else stated, better rear gears more suited for higher RPM operating range..
The following is only a WAG, but I'd suspect a torque converter stall speed around 1900 -- 2200 would "free up" the engine at idle..
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I plan to change the heads and cam in the future (have been reading the Hot Rod article about this engine), surprisingly it runs real good. I've had a couple guy's tell me to put at least a 2000 stall converter (th400) in just haven't found anything on it being correct.
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1985 C10 shortbed, current project.
Member of the Upstate SC GM Truck Club.
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