matthewcowan

i have a magnafluxed pair of stock gt40p valves, springs, porting everything all stock. they're in great shape. would i see much of a difference on a 5.0lx auto vert. would it be worth putting on now or waiting and replace spring and valves then port when i have the money.
im buying a crate engine when my cars paid for, so i dont want to spend too much on this engine

StangTangGT

k now this doesnt make much sense but, yes i would wait on new valvetrain parts, and the porting before slapping them on.

Quik

throwing them on stock youll see a difference. if you got a cam i would replace the springs. also if ported then you see a larger difference of course you knew that

vfast

I would gasket match them ..put in some 1.7 rocker and drive it

matthewcowan

what kind of difference, would i notice with these and a gt40 lower intake. i was hoping for like 30 or 25. so only new springs with a new cam.

Quik

yea youll see about that. youll see 15 just from the CR raise