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PT76 Stock bottom end LS1 717/720 12.5lbs

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Old 04-17-2016, 11:05 PM
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Back from the dead, I got my car up and running again. Clutch problems and life happened. After sitting for 3 years I hit up a dyno day at my buddies new shop on his brand new load bearing dynojet. 3 years of dirt and dust on the air filter and running through my stock slp dual dual muffler.

8 PSI = 634 / 616
10 PSI = 694 / 680
11 PSI = 722 / 701

Time for a th-400 and some 9s.
Attached Thumbnails PT76 Stock bottom end LS1 717/720 12.5lbs-img_20160409_153207270.jpg  

Last edited by Nitroused383; 04-17-2016 at 11:11 PM.
Old 04-18-2016, 03:17 AM
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My god this gives me hope. SWEET!
Old 04-18-2016, 09:31 AM
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Wow, thats BIG numbers for only 11psi, congrats!
Old 04-18-2016, 02:10 PM
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Glad to see your update.

Wouldn't guess it's had many miles put through it over the years has it?
Old 04-18-2016, 04:52 PM
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Thanks guys it's been a long time... look at my original post date lol. I started all the turbo stuff with 125,000 miles on my car and it now has 132,500. So I beat the **** out of it for about 7k miles but I have had (still do) a ton of problems with the Mcleod RXT clutch. I warped it so bad it would not fully disengage, and I couldnt get it into reverse or any forward gears with out major effort. Too many 5-6k 2 step launches at the track i guess. I usually run 8-9 psi on the street though and this is all on 91 octane + 100% methanol injection.
Old 04-19-2016, 08:03 PM
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When you say 4" cutout, did you run a 4" downpipe from the turbo (I know it's a 3" housing) or is it just 3" piping necked up and down from the cutout?
Old 04-20-2016, 01:57 AM
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interested in the downpipe setup as well
Old 04-21-2016, 05:33 AM
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I have a 3" downpipe that runs through the stock k-member. I used to have a 4" dmh electric cutout on my car but over time it failed to close all the way and rattled. I removed the electric cutout and rtv silicone a cap on the end. I haven't bothered to remove the cap because it's ungodly loud.

Here is how it used to look, I planned on going to a 4" downpipe sometime in the future when I bought an aftermarket K-member.
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Old 10-14-2019, 09:55 PM
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Sold the car to a buddy who installed a Turbo 400 with a PTC 9.5 Converter. The same tune that made 720 rwhp on the 6 speed made 599 rwhp thru the auto. Also someone plumbed the wastegate to the top instead of the bottom so the first pull maxed out the 2 bar map sensor instantly, it revved so fast I let out right away. It spiked 740 rwhp thru the auto for about a 1 second pull on 92 octane with straight meth with 11:1 compression lol. It didnt even blow up and still runs. I'd guess that would have been well over 850 rwhp thru the 6 speed which was still thru the stock SLP dual dual muffler!

Last edited by Nitroused383; 10-14-2019 at 10:04 PM.



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