need help asap
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
yeah, was running way more boost than i thought and made way more power than i am comfortable to run on stock block.
thread here for dyno.
http://forums.corvetteforum.com/c5-f...post1582431323
thread here for dyno.
http://forums.corvetteforum.com/c5-f...post1582431323
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Yeah I was gonna guess 14 psi or so....
I had your EXACT combo before only with a 4.38" pulley and I would see 10-11 psi at 6500.... I was at 622hp at that level...
Until it killed #5/7 pistons.
I had your EXACT combo before only with a 4.38" pulley and I would see 10-11 psi at 6500.... I was at 622hp at that level...
Until it killed #5/7 pistons.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
i am definetly going to lower the boost level soon. i will ride around like this and just shift at 5500 where she is making like 650 and call it a day. then i will do the fuel system, new supercharger bracket, and another pulley and have her make 650 and call it a day
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Melting Slicks
Joined: Nov 2008
Posts: 2,008
Likes: 12
From: NOLA
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
A 4.38" will get you around 10 psi @6500 on a stock LS6 with full exhaust and no belt slip.
Blownbluez06 has a 4.38" pulley in stock he'll probably sell you cheap. It was my old pulley. I would see 10-11 psi at 6500-6600 rpms with an A&A bracket. It made 622hp with meth, 10.6 AFR and 13*.... It still lunched two pistons after about 4k miles... (9 track passes and a bunch of hits on the street).
Blownbluez06 has a 4.38" pulley in stock he'll probably sell you cheap. It was my old pulley. I would see 10-11 psi at 6500-6600 rpms with an A&A bracket. It made 622hp with meth, 10.6 AFR and 13*.... It still lunched two pistons after about 4k miles... (9 track passes and a bunch of hits on the street).
Supporting Vendor
Joined: Apr 2012
Posts: 2,673
Likes: 370
From: Forney TX
Shifting early doesn't necessarily make it any safer on the motor. You're making more cylinder pressure at 5000 than 6500, even if your boost is continuing to climb
Last edited by BLOWNBLUEZ06@RKT Performance; Nov 28, 2012 at 08:03 PM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
A 4.38" will get you around 10 psi @6500 on a stock LS6 with full exhaust and no belt slip.
Blownbluez06 has a 4.38" pulley in stock he'll probably sell you cheap. It was my old pulley. I would see 10-11 psi at 6500-6600 rpms with an A&A bracket. It made 622hp with meth, 10.6 AFR and 13*.... It still lunched two pistons after about 4k miles... (9 track passes and a bunch of hits on the street).
Blownbluez06 has a 4.38" pulley in stock he'll probably sell you cheap. It was my old pulley. I would see 10-11 psi at 6500-6600 rpms with an A&A bracket. It made 622hp with meth, 10.6 AFR and 13*.... It still lunched two pistons after about 4k miles... (9 track passes and a bunch of hits on the street).
wasn't there a guy on here with a z06 with a TTix kit making over 700 and it lasted for over 2 years if memory serves me correctly. i cannot remember his name but when my car made over 700 on first pull i was worried but then remembered his car so i didn't feel so bad about the power it made
we are gonna strap it down to another dyno here in a couple of weeks just to compare numbers.
Last edited by idontknow; Nov 28, 2012 at 10:08 PM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
yep it is his old car. all i did when i got it was added the fuel pump, vavle springs, push rods, and a new tune.
car is only running 9* of timing, 11.5 a/f, meth on all the way, and the fuel pressure is starting out at 60 and falls only a few psi to read line. injectors are around 80% duty cycle
i thought of your car when i made the power it did, hopefully mine will last a long as your did so my engine build fund will be all saved up
Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
some cars on here get away with 700+ on a stock motor
NemesisC5: 99 Coupe 708/640 346ci (Stock bottom) S-Trim/Meth Dyno Sheet
ECS has a stock 2003 ls1 running low 9s must be 800+rwhp! http://forums.corvetteforum.com/c5-f...-33-145-a.html
with a good safe tune let it eat!
NemesisC5: 99 Coupe 708/640 346ci (Stock bottom) S-Trim/Meth Dyno Sheet
ECS has a stock 2003 ls1 running low 9s must be 800+rwhp! http://forums.corvetteforum.com/c5-f...-33-145-a.html
with a good safe tune let it eat!
Last edited by a/c man; Nov 28, 2012 at 11:53 PM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
some cars on here get away with 700+ on a stock motor
NemesisC5: 99 Coupe 708/640 346ci (Stock bottom) S-Trim/Meth Dyno Sheet
ECS has a stock 2003 ls1 running low 9s must be 800+rwhp! http://forums.corvetteforum.com/c5-f...-33-145-a.html
with a good safe tune let it eat!
NemesisC5: 99 Coupe 708/640 346ci (Stock bottom) S-Trim/Meth Dyno Sheet
ECS has a stock 2003 ls1 running low 9s must be 800+rwhp! http://forums.corvetteforum.com/c5-f...-33-145-a.html
with a good safe tune let it eat!
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Sometimes a bad tune is the culprit, sometimes you can still have a good tune and the crappy hyperutectic pistons just come apart... It's all luck really..
Many live at 700-750rwhp, MANY more don't.. It's all a gamble.. Hell forged motors blow from time to time too... No guarantees in this game...