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Building a tms short block help ls2 alum

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Old 03-27-2014, 07:04 AM
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Lightbulb Building a tms short block help ls2 alum

Ok guys am looking to buy a ls2 Thompson Motorsports short block Alum. with

TMS Hypereutectic Piston set 4.000"

TMS Moly Rings

Blueprinted NEW GM Gen IV 6.0 Aluminum (LS2) block

GM Floating Connecting Rods remanufactued

GM Crankshaft Polished, Chamfered and Balanced core

King Racing Main and Rod Bearings

Thompson Motorsports one piece racing cam bearings

The h/c/I is from my ls1. Which is a 92 fast intake an t-Rex cam, 241's stock I don't have any ptv problems an didn't flycut the pistons in the ls1

I just bought some stock 799's heads I going to use on the ls2 tms motor! My problem is am I going to have any ptv problems. I know the 799's have a smaller cc... So it's got me thinking. I want to try an keep the compression has high as I can! The trex cam loves more compression. I know the 799's combustion chamber r 64. An the ls1 241's was 68. Will I have a ptv problem once I use the 799's. The rockers will be stock ls1's well I hope to reuse them. An the push rods r hardered 7.4's if that matters to help answer my question. My goal is 500hp at flywheel. My ls1 setup made 386/359rwhp/tq on a dyno jet which is like 455hp at flywheel. Running a tko-600 5-speed
The car is street driven an will see a track to get a base line of 1/4 times. That's it. But also a few lsx fest shows to do pro-touring races.
Thanks for any help Jason
Old 03-27-2014, 04:07 PM
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Anybody want to chime in
Old 03-28-2014, 09:36 AM
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Come on guys
Old 03-28-2014, 10:57 AM
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Why not clay the motor to be sure?
Old 03-28-2014, 11:47 AM
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So the 799's will be totally untouched then?
Old 03-28-2014, 04:14 PM
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Yea I found a set. All stock. Sent a email to ai an asked about cleaning them up for some hp/tq but no milling done. An what size gasket I should use. An I didn't clay the ls1 since I knew it would work. But guess am going to for the 6.0 build but would like to see what other people have done or problems they have had.



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