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390 rwtq from almost stock 5.3

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Old 12-28-2010, 09:41 AM
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Arrow 390 rwtq from almost stock 5.3

I just finished up my cam swap and got a dyno tune. The best numbers I got were 323 rwhp and 390 rwtq. over all I'm pretty impressed. I have one dyno sheet if some one wants to see it.

mods are

220/220 .551/.551 112 LSA
long tubes
cai
underdrive pulley
tune


and the run is on 22's if makes a difference


link to same thread on LS1 truck that has some pics
http://www.ls1truck.com/forums/dynod...ock-5-3-a.html
Old 12-28-2010, 09:44 AM
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Do you have a dyno sheet. I'm wondering if it is a tq spike.
Old 12-28-2010, 09:44 AM
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Thats about 40-50 rwtq off from the norm with that cam from what I've seen. I wouldn't get too hung up on any number you get from a dyno.
Old 12-28-2010, 09:46 AM
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Old 12-28-2010, 10:22 AM
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yea I know it's just dyno numbers and they vary a lot

my tuner tunes ALOT of vehicles on his dyno and his initial estimates were 300/340 so its not just a random dyno that reads high



this wasn't the best one but we eventually got it to peak power at 6000 then it plateaued till 63ish then started to drop off

Old 12-28-2010, 10:30 AM
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That torque curve is way off, it should be more flat. Also, I hate when people change the axis values between hp and torque, makes it harder to look at the table.

Also are you running a stock converter?
Old 12-28-2010, 10:35 AM
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390 torque at 2000 rpms. SWEET. completely owns Scott.
Old 12-28-2010, 10:37 AM
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Originally Posted by GMCtrk
390 torque at 2000 rpms. SWEET. completely owns Scott.
9000 posts
Old 12-28-2010, 10:38 AM
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its a 3000 stall, i think its the way the start. the tuner would run the truck up a couple grand and then he would floor it at the same time another guy started to record the dyno. and i don't know too much about dynamometer lol i just wanted to share
Old 12-28-2010, 10:40 AM
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Originally Posted by GMCtrk
390 torque at 2000 rpms. SWEET. completely owns Scott.
the curves on this graph must be off because it peaked @3200-3300 on all the others


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