Valvespring Question

FivePointSlow777 · May 7th, 2011, 12:34 AM

so my stock short block finally let go after years of relentless beating i actually shook a chunk of piston out of my upper plenum when it came off. anyway i have a 91 shortblock from my first mustang that i re ringed and bearinged. im plan on running my GT40 intake along with a set of GT40 heads (not the Ps) 1.72 rockers and a F cam that i picked up cheap (i know the alphabet cams are out dated but im going to run it) this is more temporary so im keeping my wallet in mind. the F cam is 512 with 1.6 rr so if im not mistaken with 1.72 rr it will be 550.4. what im looking for is a wallet friendly valvespring set that will handle that lift. i know the tfs set is only good till 520. so should i just dump them off at my machine shop and tell them or is there a set out there that i can buy that will save me a couple bucks.

jkeyz · May 7th, 2011, 01:05 AM

wont you have to cut the pistons with 1.72 rr and an f cam?

FivePointSlow777 · May 7th, 2011, 01:10 AM

i dont think so...i hope not, i have heard of guys running them its basically a cobra motor with a F cam but ill deff check the PTV clearance and i think i have the 64 cc chambers not the 60 cc

FivePointSlow777 · May 8th, 2011, 08:51 PM

is anyone out there running stock LS2/LS6 springs i read somewhere else of some guy doing it 570 lift capable and half the weight

May 7th, 2011, 12:34 AM	#1
FivePointSlow777 Newbie 1993 Mustang GT Join Date: May 2008 Location: Caledonia, New York Posts: 41 iTrader: 0 reviews	Valvespring Question so my stock short block finally let go after years of relentless beating i actually shook a chunk of piston out of my upper plenum when it came off. anyway i have a 91 shortblock from my first mustang that i re ringed and bearinged. im plan on running my GT40 intake along with a set of GT40 heads (not the Ps) 1.72 rockers and a F cam that i picked up cheap (i know the alphabet cams are out dated but im going to run it) this is more temporary so im keeping my wallet in mind. the F cam is 512 with 1.6 rr so if im not mistaken with 1.72 rr it will be 550.4. what im looking for is a wallet friendly valvespring set that will handle that lift. i know the tfs set is only good till 520. so should i just dump them off at my machine shop and tell them or is there a set out there that i can buy that will save me a couple bucks.

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May 7th, 2011, 01:05 AM	#2
jkeyz Regular 93 5.0 lx Join Date: Mar 2010 Posts: 342 iTrader: 0 reviews	wont you have to cut the pistons with 1.72 rr and an f cam?

May 7th, 2011, 01:10 AM	#3
FivePointSlow777 Newbie 1993 Mustang GT Join Date: May 2008 Location: Caledonia, New York Posts: 41 iTrader: 0 reviews	i dont think so...i hope not, i have heard of guys running them its basically a cobra motor with a F cam but ill deff check the PTV clearance and i think i have the 64 cc chambers not the 60 cc

May 8th, 2011, 08:51 PM	#4
FivePointSlow777 Newbie 1993 Mustang GT Join Date: May 2008 Location: Caledonia, New York Posts: 41 iTrader: 0 reviews	is anyone out there running stock LS2/LS6 springs i read somewhere else of some guy doing it 570 lift capable and half the weight

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