Dyno numbers seem low?
Dyno numbers seem low? I have an 04+ LS1
H-beam rods, diamond -2cc pistons
edelbrock performer carb intake
proform 750 race carb
MSD 6LS
ATI super dampener, no underdrive
no accesories other than waterpump and alt.
stock 241 heads
PRC dual springs
Pat G spec'd cam: 226/230 .598”/.600” 111LSA +4 advance
here is the potential weak link
crappy ebay shorty headers...., no cats
I was expecting somewhere @ 400whp
I dropped my car off to be tuned and when i called to check they said the car was @ 369-ish whp
that seems low.. thoughts?
could the crappy headers really be losing THAT much?
here is the pic of the exhaust setup...
H-beam rods, diamond -2cc pistons
edelbrock performer carb intake
proform 750 race carb
MSD 6LS
ATI super dampener, no underdrive
no accesories other than waterpump and alt.
stock 241 heads
PRC dual springs
Pat G spec'd cam: 226/230 .598”/.600” 111LSA +4 advance
here is the potential weak link
crappy ebay shorty headers...., no cats
I was expecting somewhere @ 400whp
I dropped my car off to be tuned and when i called to check they said the car was @ 369-ish whp
that seems low.. thoughts?
could the crappy headers really be losing THAT much?
here is the pic of the exhaust setup...
What kind of trans/converter?
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Facebook/psiconversion
Instagram/psiconversion
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Car is a 5spd manual, not an Auto... it was done on a dynojet.
I picked the car up today, it runs great, A/F was 12.45 across the board, its just down on power...
We were having problems with the Edelbrock carb manifold, 4 cyl(2 from each side) were WAYYY rich and 2 were WAY lean
I ended up pulling the manifold off, and cutting the divider down about 1.5" to get airflow across both sides, it smoothed the A/F out CONSIDERABLY, but dropped power even more....
only things I can think of are crappy exhaust, and/cam timing, the engine runs great otherwise
I picked the car up today, it runs great, A/F was 12.45 across the board, its just down on power...
We were having problems with the Edelbrock carb manifold, 4 cyl(2 from each side) were WAYYY rich and 2 were WAY lean
I ended up pulling the manifold off, and cutting the divider down about 1.5" to get airflow across both sides, it smoothed the A/F out CONSIDERABLY, but dropped power even more....
only things I can think of are crappy exhaust, and/cam timing, the engine runs great otherwise
Last edited by eric1h; Nov 25, 2009 at 10:30 PM.
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Not from anything I've ever seen. Maybe forced induction, but NA, you will make best power between 12.5-13.0:1 A/F ratio on gasoline.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
