Yes, you'll have to replace everything - seats, seals, retainers, locks and springs. All of it comes with the patriot kit. It's not too bad, I used an air compressor to pressurize the cylinder which held the vavles in place - about 100psi. I have a valve spring compressor tool if you want to borrow it, although a donation would be nice too.
~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~
seriously! OMG! DUH! thats for all you guys that keep throwing off the wall crap up there.
Competition Cams- (918) behive valves springs, they are cheap, same size as stock springs and good up to .600'' lift
[IMG]https://images.app.goo.gl/XLfskemekXBo5VfS7/IMG]
www.tjc.edu
ok cool ill keep that in mind.the crane cam tool?Originally Posted by jetmech
Yup, it works beautifully!
~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~
zo6 springs, just ordered them, .550 if im not mistaken.
04 GMC Regency - Building a 6.0 Comp 7.4" Hi-Tech Pushrods, Patriot Performance 8401 Spring Kit, Comp Double Roller Timing Chain, ARP Rod Bolts, ARP Head Bolts, Cam - I dont know yet, any suggestions???
89 Chevy Cheyenne - 10/24/09 Time of death declaired at 8:16pm.
I would not push Z06 (that's actually a zero, not a letter O) to .550". Others will dispute but whatever. There is no more work swapping to Ti retainers and different locks and new seals during a spring swap so like Nike used to say JUST DO IT.
Replaced an LY6 intake spring today...collateral damage burned a hole in the TBSS type intake.
PRC dual extremes here... .660lift changing the seats and seals is a must and very easy...i highly recommend them. stay clear of 918s in my opinion
2007 RCSB|DTR81 built LSx 3xx|PRC|NX|BOGART|MSD|QUICKFUEL 950 E85|4L80|FTI Converters|Smith RaceCraft|Racepak
midweststreetcars.com
918's here with 581 n 588 lift on xer lobes and working great. I just make sure not to rev the engine when its cold let the springs get to temp before u thrash on it.... No complaints here...
Is it a good idea to go to hardened pushrods at this point, with the heavier spring, or do stockers handle the rate change?
I read somewhere that the pushrods are the weakest link in the valvetrain, 120 for hardend is cheap insurance in my eyes.
04 GMC Regency - Building a 6.0 Comp 7.4" Hi-Tech Pushrods, Patriot Performance 8401 Spring Kit, Comp Double Roller Timing Chain, ARP Rod Bolts, ARP Head Bolts, Cam - I dont know yet, any suggestions???
89 Chevy Cheyenne - 10/24/09 Time of death declaired at 8:16pm.
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