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PTV Clearance with new cam

Generation III Internal Engine 1997-2006 LS1 | LS6

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PTV Clearance with new cam

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Old

Sep 17, 2013 | 05:16 PM

#1

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From: CA

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PTV Clearance with new cam

Wondering if the following set up will cause any PTV issues.

2002 Pontiac Trans AM-LS1

My current cam set up is:
232/234 114lsa (Torquer v2)
63cc A.I. ls6 heads
.040 cometic head gasket
11.1:1 static and 8.2:1 dynamic

New cam specs:
235/242 113+2
.620"/.610" @50
Almost the same compression

Any experts out there know if I will have enough clearance?

Old

Sep 18, 2013 | 05:24 PM

#2

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From: Muscle Shoals AL,

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Quote:

Originally Posted by 455GTO

Wondering if the following set up will cause any PTV issues.

2002 Pontiac Trans AM-LS1

My current cam set up is:
232/234 114lsa (Torquer v2)
63cc A.I. ls6 heads
.040 cometic head gasket
11.1:1 static and 8.2:1 dynamic

New cam specs:
235/242 113+2
.620"/.610" @50
Almost the same compression

Any experts out there know if I will have enough clearance?

Cam was originally spec'd out for a 5.7 with a set of Patriot Performance stage 2 59cc heads. I was told by the head as well as the cam manufactures that with factory thick head gaskets that everything would be fine. But I never installed it so I am not 100% sure.

Old

Sep 18, 2013 | 07:08 PM

#3

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11:1 and a cometic?

I would say most definitely not, you definitely need to measure it.

Old

Sep 18, 2013 | 07:42 PM

#4

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From: PA

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The 111 ICL will help with clearance. You wont know for sure until you put it in and measure it though.

Old

Sep 18, 2013 | 07:48 PM

#5

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From: Muscle Shoals AL,

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Always check valve to piston clearance no matter what the manufacture says.
Just my .02

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