valve spring question

[cyezorz]

anyone know how much lbs are stock valve spring on a 5.0HO 88 plz!??!? cause i want to put new valve spring to prevent floating with my new b303 cam

THX


OH i forget... i got 1.7 roller rocker

 

[liljoe07]

Just go with the trick flow upgrade kit. Or the Ford racing A50 springs.Preferably the Trick Flow kit since it has everything you need.

The stock valve springs are marginal at best even in their new form. So I wouldn't put too much effort in trying to mimick those spring rates.

 

[Mustang5L5]

Doesn't the B303 have less lift than the stock cam?

I could be wrong, but i don't think you need to worry about float with a B303. But if your stoc springs have some miles on them, def upgrade.

 

[skunk21]

stock closed 82lbs, open 230lbs

The FRPP A50 kit 110lbs closed & 240lbs open

B cam .480 @ 224*. I think the stock cam is .444 @ 210* of the top of my head.

 

[liljoe07]

Lift alone doesn't mean the cam is aggressive. Fact is, even the stock cam can benefit from stiffer springs.