low l92 numbers with a 229/236???
low l92 numbers with a 229/236??? Took my truck to the shop and dynoed 400 hp and 368 tq at the wheels with this setup:
6.0 with stock pistons, P&P L92 heads, 229/236 .624/615 TSP LS3 cam, Longtube headers, 3" y-pipe, Cold Air Intake, Vigilante 3200 triple disc stall. Something doesnt seem right here, or am i just expecting to much from this setup? I realize that with a 22-24% loss through the tranny i'd be making between 488-496 hp at the crank. or is this right where it needs to be?
6.0 with stock pistons, P&P L92 heads, 229/236 .624/615 TSP LS3 cam, Longtube headers, 3" y-pipe, Cold Air Intake, Vigilante 3200 triple disc stall. Something doesnt seem right here, or am i just expecting to much from this setup? I realize that with a 22-24% loss through the tranny i'd be making between 488-496 hp at the crank. or is this right where it needs to be?
I will try to get one posted asap.
I think it is an LQ4 (2004 6.0) dont know when LQ9 came out
Stock MLS gaskets .051 compressed
70cc chambers stock, didnt asked for milling whenever i ordered the heads so i think there still at 70 right John?
I think it is an LQ4 (2004 6.0) dont know when LQ9 came out
Stock MLS gaskets .051 compressed
70cc chambers stock, didnt asked for milling whenever i ordered the heads so i think there still at 70 right John?
It doesn't have much compression w/ that setup. You have a dished piston and a big chamber head. That would be the first place I would start looking. However, w/ the big valve on the intake, you aren't going to have a ton of room to mill w/out flycutting.
Jon
Jon
I think 20% or even a bit more loss through that stall and drivetrain and VERY feasible!
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Jon, i believe your right 20 or a bit more according to Jason, and yeah i dont have very much compression to begin with, is this what is hurting my low end? I will try to post a dyno sheet tonight
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The L92 heads like as much compression as you can run AND still run 28-30 degrees of timing before KR.
As people said, probably low compression. How much spark lead are you running?
As people said, probably low compression. How much spark lead are you running?
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would prefer to be all motor... I took .030 off mine they came out to 62cc's
Piston above deck .010, like most LQ4's
Stock pistons are 6.7cc dish
Stock L92 head gasket .052 thickness, 4.065 bore
Stock 4.00 bore
Stock stroke
Every calculator shows 10.6:1
Here is a good calculator
CR calculator
Piston above deck .010, like most LQ4's
Stock pistons are 6.7cc dish
Stock L92 head gasket .052 thickness, 4.065 bore
Stock 4.00 bore
Stock stroke
Every calculator shows 10.6:1
Here is a good calculator
CR calculator
Last edited by 69LT1Bird; Jul 31, 2010 at 06:56 AM.
here is a thread i did when i flycut the pistons on my 6.0. Get hold of spinmonster on the corvette forums. He has the tool/head setup already and rents it for $150.00 It was very easy and didnt take alot of time. Hope this helps.
http://forums.corvetteforum.com/c6-t...ght-tools.html
http://forums.corvetteforum.com/c6-t...ght-tools.html