Valve spring pressure

[prokeep15]

So the guy rebuilding my heads told me I need new valve springs...he recommended 140lbs springs for my application. Does this sound correct?I've never heard of springs getting that high in our motors.

 

[Grumpy]

not for a stock cam

 

[Quiky One]

Don't use 140 lb'ers unless you want to wipe a cam. Go with the 100 lb ones.


Jason

 

[72firebird]

Yeah if you're gunna upgrade I would go with the 100lbs springs. You could probably run up to like a 120lbs but I wouldn't go any stiffer than that. But the 100lbs are probably your best bet, and you can just use stock LS1 springs I believe.

 

[Quiky One]

I think it is the stock valvesprings from a 1970 LT1 not ls1.

Jason

 

[prokeep15]

Nevermind the mechanic figured it out...he calculated for the wrong type of cam/lifters. He looked up the tta/gn cam style and found it different from he thought it to be...110-100 he said from calculation.