GTP Stage 2 5.3 head Question

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Mar 8, 2005 | 12:23 PM

Hawkcmc

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From: Bartlett, Ill

GTP Stage 2 5.3 head Question

Just a quick question everyone, how big of a cam can I run with GTP Stage 2 heads milled to .015 without any Piston to Valve Clearance issues? They have 2.02 and 1.57 valves. I really dont want to have to flycut but I guess I will if I have to. Any help would be appreciated. I was looking at some TSP cams and some Futural cams and this cam will be at 114 LSA.

Thanks again!
CMC

Mar 9, 2005 | 03:11 PM

Hawkcmc

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From: Bartlett, Ill

Can anyone help me out with this? I sent GTP an email but no response yet.

CMC

Mar 9, 2005 | 03:17 PM

jrp

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From: Valencia, Ca

what casting

Mar 9, 2005 | 03:20 PM

Hawkcmc

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From: Bartlett, Ill

Yep that would help right? They are 5.3 heads

Mar 9, 2005 | 03:31 PM

jrp

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From: Valencia, Ca

well you should always check ptv clearance but there are people running the same type of 5.3 heads milled ~.010-.015 w/ 2.02/1.55 and 2.02/1.60 valves with cams in the mid 230 duration (FM13'ish). w/ no fly cutting.

Mar 9, 2005 | 03:33 PM

Hawkcmc

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Awesome thanks for the good info, any good links on how to check PTV clearance?

Mar 9, 2005 | 03:42 PM

jrp

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http://www.rehermorrison.com/techTalk/41.htm

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Mar 10, 2005 | 12:32 AM

Nate_Taufer

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From: North of Seattle

i read the posted article jrp posted but really don't understand the first part about checking half of valve pocket and what not. Somebody care to explain in little words and speaking slowly?

Nate