valve springs

[sleepr]

dose any one know if there’s any difference between the valve springs from a 90 "fe" head and a 90 "ge" head besides the heads there found in?

[Wraith]

Originally Posted by sleepr

dose any one know if there’s any difference between the valve springs from a 90 "fe" head and a 90 "ge" head besides the heads there found in?

springs are stiffer for the 3s-gte vs 5s-fe

[sleepr]

but are they the same size? could i put ge springs into a fe head? because look at this, its about what im looking for i want to shift at 8,500
http://www.atsracing.net/valve_springs.htm
wraith, should i keep posting or just im you because u ancer all my Q's

[fredk]

your gonna need alot more than stiff valve springs to shift at 8.5k

[Kwanza]

There will be no point in revving beyond the rev limiter unless you have some performance camshafts and have work done to the head. Even if you were to rev it on the stock stuff... the engine will make no additional power.

[fredk]

why are you building a fe head instead of a ge head for rpm?

[sleepr]

im haveing a super hard time finding a ge head, and for needing more then stiff springs i have a block with:balanced crank arp main studs balanced and shot penned (2 times) rods with arp bolts on them and 8.5.1 ross racing pistons so i know the bottom end can take it. befor i started my build i made my mind up on how high i wanted to rev and how much power i wanted to get, im just geting parts for the head (and a head) togeather now. so if i cant find a ge head i still want to rev to 8.5

[fredk]

AAHHHH finally somebody did their homework, but with the fe head, your power peak probably will happen well before 8.5k, the port to valve angle is just too sharp of a turn. If you put that kind of money into a short block, the head really should be able to flow enough air to feed it at hi rpm, I wouldnt put very much money into the fe head and just do a search for a ge head that with a good set of cams and a little port work will feed it nicely. try car-part.com or just search around, now the ge heads I have are the gen1 head with the huge intake ports and the tvis, I have heard that the later gen heads flow better, but I havent seen one of them yet or dont know how much better they do flow, but i have heard that the shims on top of the buckets tend to come loose at real hi rpms, so u might need a gen 2 or later with under bucket shims

[fredk]

Do I see 8.5 cr pistons in your list? why so lo, turbo? whitch head are these cr figured with?

[sleepr]

yea there for a turbo, i went out and got a ihi turbo off of a 6.3 (i would post pics but i cant figgur out how ) the head for the cr is a 3sgte, would you happen to know if the 90 gte heads came with under bucket shims?

[fredk]

do you have a email or do you have aol im by chance?

[sleepr]

yea i have a email its "Sean.McCarthy@mycm.cmcc.edu" and my aim name is "cascadedhart" but its not leting me on now ( )

[fredk]

ok i added u to my aim list, i am fredk1037, im getting pretty tired and just might hit the sack in a bit, add me to your aim, nite

[sleepr]

cool, have a good one