Stock Bottom & Boost - Reliability List
Tune can only do so much This thread is about boosted stock blocks. They have pistons, rods, rod bolts, main bolts, rings, head bolts, etc that are designed by GM to safely handle about 350 rwhp. So pushing ANY stock engine that wasn't build for boost from the factory 50-75% over stock power levels is just asking for it.
The question is how long will it last at different the power levels? SDCE told me that they rarely push stock LSx motors over 500 rwhp. So if longevity is a concern then keep it under 500.
Thread Starter
Joined: Mar 2002
Posts: 5,778
Likes: 4
From: SW Chicago, IL
Thanks for keeping the replies coming. Updated to this point.
'Trust' - I like the way you organized it. Maybe I'll change over to that.
maxgee - What type of FI?
'Trust' - I like the way you organized it. Maybe I'll change over to that.
maxgee - What type of FI?
Last edited by MadIceV8; Feb 26, 2009 at 03:59 PM.
I had a Vortech v-9 G-trim head unit with aftercooler. I was running about 8-9 pounds of boost. Brand new Jasper engine, and it lasted for 3,000 miles. AFR was 11.5 at wot. Not sure of rwhp. First dyno pull cracked the front main seal. Then it was downhill from there. Had massive amounts of smoke coming out of breathers. Figured out it cracked the # 5 and 7 ringlands. Lesson learned don't go into forced induction if you don't have the bank roll to back it up. It is very pricey when things go wrong.
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Brett Foote Thread Starter
Joined: Mar 2002
Posts: 5,778
Likes: 4
From: SW Chicago, IL
On The Tree
Joined: Jun 2007
Posts: 128
Likes: 0
D1-SC
Stock unopened 2002 LS1 (valve springs only)
60K driven hard before blower - now at 75K
14psi at 7000 rpm with 3.9 blower pulley and big filter
520 rwhp
126 mph trap - 3900 lbs
20 + track passes , have hit rev limiter set at 7150 rpm many times (bad auto)
Car gets driven hard on and off the street.
Only pump fuel used but have big fuel system & FMIC
Engine has not complained yet.
I believe it's all in the tune !
Car is in Australia
Stock unopened 2002 LS1 (valve springs only)
60K driven hard before blower - now at 75K
14psi at 7000 rpm with 3.9 blower pulley and big filter
520 rwhp
126 mph trap - 3900 lbs
20 + track passes , have hit rev limiter set at 7150 rpm many times (bad auto)
Car gets driven hard on and off the street.
Only pump fuel used but have big fuel system & FMIC
Engine has not complained yet.
I believe it's all in the tune !
Car is in Australia
Boost 16 pounds
86 when installed
90 on the clock currently
nothing broken yet
I am very impressed to see such high numbers from stock engines. I know personally 2 local guys one had sts lt1 and one had ati lt1. Both took out there pistons pretty quickly,one guy lost race to heads/cam/headers bolt on ls1 buddy and tightened up his pully to think 8psi lost ringland almost right away.Sts car had problem with boost controller it went not sure how high up and again ringland let go. So can't possibly see how some of you guys are getting the stock hypercrap pistons to live this long. If it was me would run 5 to 7psi with most turbos and mabye a bit more with 317 heads lowering compression. Past that well I would make sure you have the money to back it up if the engine goes boom!
I went straight to forged engine feel a lot safer with that.
I went straight to forged engine feel a lot safer with that.
i was scared at 10 then i was like fkk it, lets try 11....hmm that wasnt that bad 13 now... i like this....14 hmmm i'm kinda nervous 16 fkk i maxed out the 2bar sensor. lol
to me i know it's going to blow up but i wanna see how far i can get away with playing with fire before it engulfs me
i know hellbent has taken a junkyard to over 850 hp more than a couple of times... didnt last worth a **** but it was fun while it lasted
to me i know it's going to blow up but i wanna see how far i can get away with playing with fire before it engulfs me
i know hellbent has taken a junkyard to over 850 hp more than a couple of times... didnt last worth a **** but it was fun while it lasted
00 FRC vette
05 LS6 with studs only...plus heads and cam.
Pro turbo top mount kit with precision 67mm turbos.
11.5psi
12 degrees of timing.
787rwhp and 696ft-lbs
Only thing i'm breaking is the drivetrain.
05 LS6 with studs only...plus heads and cam.
Pro turbo top mount kit with precision 67mm turbos.
11.5psi
12 degrees of timing.
787rwhp and 696ft-lbs
Only thing i'm breaking is the drivetrain.
vic. intake,arp botls,317 heads push rods and springs everything eles stock
pt70
4-12psi with ams-500 93 oct. somtimes 5gals mixed 104
460-500rwhp
5000+ miles driving to the track for street nights and quick street races.
3420lbs it still runs good just broke the converter/tranny
pt70
4-12psi with ams-500 93 oct. somtimes 5gals mixed 104
460-500rwhp
5000+ miles driving to the track for street nights and quick street races.
3420lbs it still runs good just broke the converter/tranny
