Chr1s46536

What would be a good valve spring to updrage to if im putting on a set of gt40p heads but still using the stock cam?

Chr1s46536

Oh yea and if someone could post up that walk through of a head install i know i had it before but lost the site.

mjr46

stock springs will be fine for stock cam

P.S.I.cho

+1

my77stang

+2

you could add some .060 shims if you wanna stiffen them up a tad so you can spin a little higher without valve float - - but in the end your car is still gonna be slow [8D]

94 G STANG

I would like to disagree fellas with all due respect, the stock springs are crap even with stock cam. I recently dropped in a 96 gt40 non p longblock inthinking the same thing, right after 5100 rpm it falls flat on its face "valve float for sure". I still have my trickflow spring kit from my previous engine and thats what im going to slap on soon. I had no problems with valve float with my other engine andI think trickflow has a good setup with valve seals shims the whole deal for around$140Summit racing has it I believe. Good luck and might as well do it right the first time

Chr1s46536

can i install the shims myself or would i have a machine shop do it?

67mustang302

I like Comp's Beehives, but most people are skeered to run a single spring.

Mustangkiler

Ford Racing a50's or crane or 44308 are the only two i know you can use for sure without machine work.

Alero99

not to steal the thread but can a stock cam be used temporarily with double springs that were used with an F cam?