g5x3 question
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TECH Regular
Joined: Aug 2003
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From: Texas
g5x3 question I was wondering if this cam would fit with my stock heads....they have been milled but just for the heads being warped so im not sure how much that would be and do you gotta have the rev 921 springs on there or would a diff type of dual spring work cause I have a 918 springs on it right now.
Launching!
Joined: May 2004
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From: miami
definetly check the PTV clearance with your heads. you can use the PRC valvespring kit, its a great deal. you're also gonna need pushrods.
i got my PRC dual golds from terry @ racetech, you can get them from him and a few other sponsors.
i got my PRC dual golds from terry @ racetech, you can get them from him and a few other sponsors.
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From: Texas
well I got a valve spring kit with the 918s from tsp already on it and I got tsp hardened push rods so all I need to do is swap out springs and im set but how do I check the clearance?
Launching!
Joined: May 2004
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From: miami
Originally Posted by UGotBeaT
well I got a valve spring kit with the 918s from tsp already on it and I got tsp hardened push rods so all I need to do is swap out springs and im set but how do I check the clearance?
do a search for piston to valve clearance, basically you just use clay with oil on it so it doesnt get stuck to the valves. then you measure the thickness of the depressed clay.
Launching!
Joined: May 2004
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From: miami
Originally Posted by Unaffiliated Racing
Just run the 918 spring it will be fine. A motor I built run's the 918 spring with this type of cam. 408 stroker 454 rear 461 ft/lbs....554 rear 709 ft/lbs on 100shot..daily driven.
Originally Posted by Unaffiliated Racing
Just run the 918 spring it will be fine. A motor I built run's the 918 spring with this type of cam. 408 stroker 454 rear 461 ft/lbs....554 rear 709 ft/lbs on 100shot..daily driven.
Brandon
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Originally Posted by Unaffiliated Racing
Just run the 918 spring it will be fine. A motor I built run's the 918 spring with this type of cam. 408 stroker 454 rear 461 ft/lbs....554 rear 709 ft/lbs on 100shot..daily driven.
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Verdad Gallardo Yeah..maybe a little shorter. Most have no idea what that spring is capable of. Max safe lift is .655" Spring performance wise the 918 will kick the @ss of any dual spring on the market due to harmonics and the light weight of the spring. It's not a short cut it's a good decision..I guarentee it.
Originally Posted by Unaffiliated Racing
Yeah..maybe a little shorter. Most have no idea what that spring is capable of. Max safe lift is .655" Spring performance wise the 918 will kick the @ss of any dual spring on the market due to harmonics and the light weight of the spring. It's not a short cut it's a good decision..I guarentee it.
Originally Posted by Unaffiliated Racing
Yeah..maybe a little shorter. Most have no idea what that spring is capable of. Max safe lift is .655" Spring performance wise the 918 will kick the @ss of any dual spring on the market due to harmonics and the light weight of the spring. It's not a short cut it's a good decision..I guarentee it.
Originally Posted by Cal
Yes strange how many people don't know this. Chalk it up to internet miss-information I guess. Bigger is not always better, and heavier is almost always a bad thing in racing.
well "we"(j read between the lines) like to run our dyno sessions with the springs .050" before coil bind. These spring actually work better the closer you run them to coil bind. I think I installed those springs between 1.750"-1.775"
Originally Posted by Unaffiliated Racing
Thank You...there is a higher power!
well "we"(j read between the lines) like to run our dyno sessions with the springs .050" before coil bind. These spring actually work better the closer you run them to coil bind. I think I installed those springs between 1.750"-1.775"
well "we"(j read between the lines) like to run our dyno sessions with the springs .050" before coil bind. These spring actually work better the closer you run them to coil bind. I think I installed those springs between 1.750"-1.775"
in what instance would you recommend the 921's over the 918's?
You..knowing who I am... I'd probably say when it's pushing to the 250 duration mark and probably lifts over .630" I run 918's on EVERYTHING! My own motor has them and 3/8" pushrods..promag 1.75 rockers cam is well....custom 
Launching!
Joined: May 2004
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From: miami
Originally Posted by Unaffiliated Racing
You..knowing who I am... I'd probably say when it's pushing to the 250 duration mark and probably lifts over .630" I run 918's on EVERYTHING! My own motor has them and 3/8" pushrods..promag 1.75 rockers cam is well....custom
great info, now i dont have to put these PRC's on my motor, ( it already has 918's) awesome.
Originally Posted by Unaffiliated Racing
You..knowing who I am... I'd probably say when it's pushing to the 250 duration mark and probably lifts over .630" I run 918's on EVERYTHING! My own motor has them and 3/8" pushrods..promag 1.75 rockers cam is well....custom
Thread Starter
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From: Texas
ok well I guess I can run these with this cam but would there not be a slight chance the spring would collapse at high rpms? Also I still would like to know if this cam would fit with my stock heads since they were milled for warpage. Im guessing it would be an even tighter fit?