Crazyfast50stang

I want to get some new valve springs for the gt40p heads I got. I drive the car kind of hard what kind of springs should I get? Is there anything else I should do while I am in there with the srpings off? I'm thinking 1.7 roller rockers.

stanglx2002

it depends on the lift of your cam you are going to be running

Crazyfast50stang

well for now its stock.Its going to stay like that for a long long time.

JD1969

Then get a stock spring, the cam and valve springs are meant to match. With a stock cam there is no need to rev the engine very high and stiffer springs will not help you.

88BlueGT

Well, what if he had an E-Cam?

86HOGT

What if had an F Cam and running out of the box afr 185s?




lol...but seriously?

Crazyfast50stang

Well I want to know if its ok with 1.7? There will be no problem with stock springs right? I dont want to F up my heads and all.

JD1969

Then you need a stiffer spring, I have heard of people using the stock spring on a E cam, but I would'nt, they are cheap and there is HP to be found by finding the correct spring. Theres more to spring selection than just lift, lobe profile also needs to be considered. A cam with very aggresive lobes will need a stiffer spring to control the valve.

Crazyfast50stang

Ok cool. Thanks everyone for the info.

Grimace5.0

Just to add:
You also have to take into consideration coil bind and installed height.