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HCI LS1 only making 423rwhp/381rwtq

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Old 10-28-2011, 04:32 PM
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Default HCI LS1 only making 423rwhp/381rwtq

stock short block
etp 215 heads .40 gaskets (studded block)
cam 236/242 similar specs to MS3
fast 92 intake/fast 92 tb
42# inj
LFE 100mm mass air
lt headers full 3 inch exhaust, 4;10 gear
car made 423rwhp and 381rwtq should i not be making alot more?

Last edited by ls69; 10-28-2011 at 04:38 PM. Reason: mis spell
Old 10-28-2011, 04:58 PM
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What's the graph like, type of dyno, what transmission, how was air/fuel ratio?

More importantly, what does it trap at the track?
Old 10-28-2011, 05:11 PM
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Originally Posted by thunderstruck507
What's the graph like, type of dyno, what transmission, how was air/fuel ratio?

More importantly, what does it trap at the track?
pulled up to about 6500ish, mustang dyno, tremec 6 speed, afr 12.93

Last edited by ls69; 10-28-2011 at 05:13 PM. Reason: forgot
Old 10-28-2011, 05:13 PM
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motor hasnt been to the track yet
Old 10-28-2011, 05:49 PM
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"mustang dyno"

That pretty much tells the tale. Like was said above you need to take it to the track.
Old 10-28-2011, 05:51 PM
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Originally Posted by 1989GTA
"mustang dyno"

That pretty much tells the tale. Like was said above you need to take it to the track.
will do in the spring! thanks guys
Old 10-28-2011, 05:56 PM
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Looks way low...I made that with a bad cluth, 2.5 LS6 heads, and stock intake on a Mustang dyno. I'd think you should be making well over 450rwhp. My AFR was 13.0.
Old 06-21-2012, 01:56 PM
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What was your trap?
Old 06-21-2012, 03:31 PM
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Why not pull it up higher? 6800 ish is a ms3 peak power but still low for all the mods listed. Check all the obvious stuff , throttle not opening all the way, any misfires, codes, compression check, and what matters what it mph at the track.
Old 07-08-2012, 05:10 PM
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There is a dyno in my town where the average ls1 with h/c/i only throws down about what you are making. Take the same car to another dyno and it makes 50 hp more.



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