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Old 05-10-2010, 03:58 PM
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I think you should post your dyno graph on this thread to give people more informed opinions
Old 05-10-2010, 04:00 PM
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http://i152.photobucket.com/albums/s...D/untitled.jpg

there is a copy of my spark table...
Old 05-10-2010, 04:02 PM
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Originally Posted by GMCtrk
How about a call to Dave to see what he says about a stall change. Really when it comes down to it the PT series is a big converter really made for towing/ FI setups...a slightly looser SC3000. I'd be curious to see what he'd say you'd gain by going to a SS4000.

I already did, 3600 is as loose as he can get a PT and I can't go smaller cause I had this converter custom made to make my flt 4l60e work with my 2000 lq4 crank flange.

Last edited by MPFD; 05-10-2010 at 06:54 PM.
Old 05-10-2010, 04:03 PM
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http://i152.photobucket.com/albums/s177/MPFD/dyno.jpg

There is the graph... Thats an unlocked converter stabbed at about 3000 in third.

if you put my track times and the fact that my truck weighs 4600 with me and 1/2 tank of fuel into stupid internet HP calculators it says it should be about 385-390 to the rear wheels...

Last edited by MPFD; 05-10-2010 at 06:55 PM.
Old 05-10-2010, 04:05 PM
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Is that a dynojet? 330 hp would be consistent with your times. Is your motor healthy?
Old 05-10-2010, 04:06 PM
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Originally Posted by Phantom
with the heads you have and assuming your cam is fairly healty, you're probably making close to 400rwhp, or should be...something isn't right brotha. i can see narrowing it down to your 60' times if your mph was higher. but with the 60' you have, that mph is pretty much dead on for the et.

for instance, black04silverado or what ever, has a stock lq4 with a 230s duration cam, stock 317 heads, 3600 verter and 4.10s and run 13.10 @102...and even his tune wasn't spot on supposedly
I agree with this. Your 1.83 60' isn't that bad, but if you had the power you would have a higher MPH. I'm thinking the tune is off.
Old 05-10-2010, 04:06 PM
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i circled your main issue
Old 05-10-2010, 04:07 PM
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Originally Posted by dlt76028
I'm thinking the tune is off.
The tune is seemingly fine. AFR is good as is spark. A compression test may be in order.
Old 05-10-2010, 04:09 PM
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Originally Posted by GMCtrk
Is that a dynojet? 330 hp would be consistent with your times. Is your motor healthy?
Its got 5000 miles on a brand new GM factory short block.
Old 05-10-2010, 04:11 PM
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Originally Posted by Phantom
i circled your main issue

I called and talked to your tuner and he said it sounded spot on and didn't think he could improve on it with out going SD. I'm not willing to do that after he told me about your problems in Colorado. I go there alot on quad trips...


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