Generation III Internal Engine 1997-2006 LS1 | LS6
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PTV clearance help

Old Dec 26, 2006 | 03:36 PM
  #1  
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Default PTV clearance help

Trying to figure out if I'll be ok.

Cam:
Intake lift @ TDC - .129"
Exhaust lift @ TDC - .096"

235/239-600/580-113+4 cam

Pistons are diamond p/n 11576, valve reliefs are .165" intake and .107" exhaust.

I am using a .04" thickness head gasket. Heads are TSP stage 2.5 LS6 heads, and were "cleaned up", not milled, probably .003-.004. Block was decked about .010". Piston is about .010" out of the hole at TDC. Am I going to have problems? Intake looks ok, but I think I might be cutting it too close on exhaust.....not sure though.

2.04 intake valve and 1.575 exhaust.
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Old Dec 26, 2006 | 06:39 PM
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if you want to know, then measure it
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Old Dec 26, 2006 | 06:50 PM
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i'm gonna guess u'll be okay...but you should measure. Check out my post, 6 down. https://ls1tech.com/forums/generation-iii-internal-engine/515456-ptv-measurement.html
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Old Dec 26, 2006 | 07:06 PM
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it will clear!
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Old Dec 26, 2006 | 07:42 PM
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Awesome, thanks for the help
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