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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

388 dyno results...

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Old 10-07-2009, 09:51 PM
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Default 388 dyno results...
First off, this setup is nowhere near optimized. Cam spec'd for a single plane and 250 shot. Also had a little miscommunication with Bret Bauer about where I should've installed my valvesprings, so the power fell off (valve float) at only 5600 rpm.

Specs:

388ci
12.5 scr
Ported AFR 210s, 320cfm at .600
Ported LT4 intake
Bauer HR Cam 24x/25x .620ish 107lsa
58mm TB
Pacesetter LTs w/ 3" Y
4" single with 2 vibrant bullets and 1 hooker maxflo
Stock 6sp, mcleod bell, spec stage V clutch
PST ds
Moser 9" w/ 4.11s

Numbers....

439rwhp at 5600 rpm
450rwtq 4400-4800 rpm

400 rwtq at only 2800 rpm

I don't have a graph sorry guys, gonna swap valvesprings tomorrow morning and hit the local 1/8 mile in the evening. Then redyno tune the beast in the next week or two with a 150 shot. Oh btw, the new MSD 6AL-2 Programmable box was worth 2 ft lbs and .4 hp over a stock setup.
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Old 10-07-2009, 10:00 PM
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Is that all motor or on the shot, please tell me that all motor man...
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Old 10-07-2009, 10:02 PM
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of course newb
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Old 10-07-2009, 10:05 PM
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That should be on motor lol.

Are planning on converting to a single plane? Thats a lot of tq down low.
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Old 10-07-2009, 10:06 PM
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LOL ah the newb talk, sorry man i've been here for a while just don't care to post much cause i can't stand some of the stuff that gets talked on here, and the reason i asked if it was on motor was because 1) he never said and 2) i've seen some prett bad under powered stroked LT's.. Sorry for the thread hi-jack but i guess i'm a "newb" lol
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Old 10-07-2009, 10:07 PM
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yep converting to single plane with a 4 hole tb, i think the stock intake/58mm TB sucks. plus this motor was built for a 300 shot, and you can't spray more than about 200 on the stock intake.
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Old 10-07-2009, 10:09 PM
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Originally Posted by 94LTZ
Is that all motor or on the shot, please tell me that all motor man...
a stock lt1 will make more than 450 rwtq on nitrous yes it was NA.
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Old 10-07-2009, 10:14 PM
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After the single plane conversion and valvespring swap what kind of power are you expecting to make on motor? 460ish rwhp?
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Old 10-07-2009, 10:15 PM
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Weird i've seen more than two LT1cars up here in Colorado only put down 410 tq on a 125 shot..Wasn't trying to bash your setup just wanted to clarify for others..
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Old 10-07-2009, 10:21 PM
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Originally Posted by texas94z
After the single plane conversion and valvespring swap what kind of power are you expecting to make on motor? 460ish rwhp?
I think with just a spring swap I'll be in the 460-470 range. single plane somewhere north of that. Trap times will tell the story tomorrow.
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Old 10-07-2009, 10:23 PM
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470 + 300 = deep in the 9s right?
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Old 10-07-2009, 10:27 PM
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yeppp and probably plenty of broken parts along the way, i want to keep the 6 speed
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Old 10-08-2009, 10:03 PM
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How did you make out?
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Old 10-08-2009, 10:07 PM
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nice numbers!!!
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Old 10-09-2009, 01:37 PM
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damn that's some bad *** numbers for HR!

congrats should ride out
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Old 10-09-2009, 02:46 PM
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nice numbers man i hope if i ever rap it up that i can get the same results
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Old 10-09-2009, 02:51 PM
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Originally Posted by Wicked94Z
yeppp and probably plenty of broken parts along the way, i want to keep the 6 speed
hehe, good luck! That 6 speed is going to love you
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Old 10-09-2009, 05:11 PM
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springs still not in from speed inc. that i ordered 12 days ago... will update when they come in
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Old 10-09-2009, 07:25 PM
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Looks good, thats a pretty torquey setup.


What wheels do you have on, in your sig? Looks sharp.
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Old 10-09-2009, 08:10 PM
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Great number man.
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