Boost with higher compression
01-07-2004, 04:48 PM
#1
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Boost with higher compression I have a 98 SS with PP stage II 5.3 heads,TSP 231/237 cam and most bolt-ons. I went this route because I never figured I would run FI.
My brother-in-law has a powerdyne blower that used to be on my car (I bought it from him). It has been collecting dust for going on 2 years now. I could pick it up pretty cheap.
Could I get away with running 4.5-6 lbs of non-intercooled boost with my setup?
My brother-in-law has a powerdyne blower that used to be on my car (I bought it from him). It has been collecting dust for going on 2 years now. I could pick it up pretty cheap.
Could I get away with running 4.5-6 lbs of non-intercooled boost with my setup?
01-07-2004, 06:11 PM
#3
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I drive the car too much to use race gas all the time.
I guess I'll stick with my original plan of more cubes. It's just tough to see the blower sitting there without thinking about putting it to use
I guess I'll stick with my original plan of more cubes. It's just tough to see the blower sitting there without thinking about putting it to use
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04-19-2004, 04:20 PM
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Originally Posted by LINGENFELTER SS
Im sitting at a 11:1 compression on my LPE heads and cam motor.
Running 4 psi of boost at this time. Not going to go more till the bottom half is done. Good Luck !
Running 4 psi of boost at this time. Not going to go more till the bottom half is done. Good Luck !
04-19-2004, 09:50 PM
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Originally Posted by slyws6
on 93 octane? have you noticed any pinging or getting any KR?
-Sly
-Sly
Also told me I shouldnt go over 5 psi. So I keep it at 4 lbs
.
04-20-2004, 01:19 AM
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Originally Posted by Ed LS1 Vert
I would like a bit more info on your set-up.
.
04-20-2004, 06:26 AM
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Lingenfelter SS: What size combustion chambers are on those heads? Are you running the factory short block? Also do you know how much total timing your running? Reason I ask is that I have the PP Stage III LS6 heads with the 59cc chambers and am looking to build a turbo kit here shortly, I'll be taking the heads off to have the combustion chambers opened up but want to wait until I get the kit on and ensure everytthing works right. Thanks...
-Sly
-Sly
04-20-2004, 02:13 PM
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Originally Posted by Ed LS1 Vert
Yes what was your timing and A/F?
But I could ask.
04-20-2004, 03:24 PM
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Originally Posted by LINGENFELTER SS
Combustion chambers on my heads I would have call LPE (I forgot what they told me). AF my average was 12.5. Timing Jim at Speed inc. did the tuning.
But I could ask.
But I could ask.
04-21-2004, 01:56 AM
#20
With the overlap of that cam (231/237) there would be so much CR bleeding off that it will run fine on 93. Definitely run MLS gakets. The dynamic CR of that set-up is near 9.7:1 which would work up to 9psi. The off-boost performance wont be the best if you lower static CR. If you go with a smaller cam then you can't run the current compression.
