Will The Stock Boosted 5.3 Hold????
08-30-2006, 10:03 AM
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You don't need the valve spring if your engine is low mile 5.3 @10 psi. Or atleast I didn't.
I had 60,000 on my 5.3 before I isntalled the STS kit and ran it at 10-12 psi for about five months before # 7 went lean.
Instead of valve springs, I'd rather have a better intake. Now if it is a 6.0 then you need valve springs.........
BTW my 44 lb injectors did just fine on the 6.0 (and 5.3) with no meth at 12 psi.......
I had 60,000 on my 5.3 before I isntalled the STS kit and ran it at 10-12 psi for about five months before # 7 went lean.
Instead of valve springs, I'd rather have a better intake. Now if it is a 6.0 then you need valve springs.........
BTW my 44 lb injectors did just fine on the 6.0 (and 5.3) with no meth at 12 psi.......
08-30-2006, 04:00 PM
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ok so valve springs aint needed at 10-12 psi i still want to run meth and i/c to be safe. wilderacing ur blow ur motor dew to ur vsprings? and am ganna use the side mount i/c under the passenger seat i think its the one u sold to xerox!! is that a good i/c i want to run 8 psi low and hoping i can go 12 psi at the track
damm i might want to drop the gas tank and clean it then!!!
damm i might want to drop the gas tank and clean it then!!!
08-30-2006, 04:25 PM
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Originally Posted by ogkevin13
wilderacing ur blow ur motor dew to ur vsprings?
My 5.3 cracked #5 and # 7 pisions, It WAS NOT the injectors being dirt because I'm still using the same injectors on the new eng.
08-30-2006, 04:54 PM
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what waz the reason for those 2 pistons 2 give out? were they the valvesprings?? u think ill have n e problems wit my set up? 5.3 (stock) 44lb injectors, pump, side mount i/c (will it work for 10-12 psi?) and meth?????
08-30-2006, 05:11 PM
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Can I get some specifics from you guys that actually have had piston failure. Where specifically did it fail? Ring land? Pics?
I've been running 10psi for quite some time now on my 4.8. I've even run WOT very lean on more than one occasion. I'm wondering if the 4.8's flat tops are inherently stronger than the 5.3" dished pistons.
I've been running 10psi for quite some time now on my 4.8. I've even run WOT very lean on more than one occasion. I'm wondering if the 4.8's flat tops are inherently stronger than the 5.3" dished pistons.