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PTV Clearance measurments

Old 12-01-2008, 08:45 PM
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Default PTV Clearance measurments

Anyone with This setup have any PTV measurements or clearance issues? As i do not want to have to flycut. Im pretty sure I should be Ok without fly cutting but have been warned by a pro to check with others with the same setup and see what the measurement is. Below is my Setup I also calculated my DCR to be about 8.7. Thanks for any help guys!!!

PRC 5.3 stage 2.5 heads milled to 59cc
TSP 224R CAM 224/224 581/581 112LSA
GM MLS HEAD GASKETS
PRC DUAL SPRINGS
Old 12-01-2008, 09:46 PM
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Dont go below on your piston to valve clearance .100" int. & .080" ext. and youll be fine
Old 12-02-2008, 12:11 AM
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Originally Posted by Randy WS6
Dont go below on your piston to valve clearance .100" int. & .080" ext. and youll be fine
Yea I was told that, Im just wondering what others with this setup generally get. I really don't want to have to fly cut this thing since Im doing it in my buddy's garage and its not much of a shop!
Old 12-02-2008, 05:10 AM
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Originally Posted by Randy WS6
Dont go below on your piston to valve clearance .100" int. & .080" ext. and youll be fine
I thought it was opposite, 0.100" exhaust and 0.080" intake.

To the OP, if this is a concern you need to measure without a doubt. Too many tolerances and if the cam is off a degree or two advanced that will take out intake clearance and vice versa for the exhaust. I wouldn't depend on what someone else measured as the consequences could be catastrophic.
Old 12-02-2008, 10:32 PM
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I agree always better safe then sorry. measure and have piece of mind. but Id guess with that cam, and head gasket, it should have ample clearance. SHOULD I said. lol.
Old 12-02-2008, 11:13 PM
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Originally Posted by Irocss85
I agree always better safe then sorry. measure and have piece of mind. but Id guess with that cam, and head gasket, it should have ample clearance. SHOULD I said. lol.
Yea Im hoping it will be ok, I can't wait to get this bad boy up and running, My tuner Steve at lsx tune says she should pull real hard down low. Just for added measure I got my GF to give me the money for a used fast 90/PTM90 setup that I bought off a guy on here. My next step is to find a nice 12 bolt with some 3.73's and a true trac and slap it under the car!!!
Old 12-02-2008, 11:51 PM
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sounds like a sweet build man, it should be a beast when its done. Damn .... i wish my GF gave me money for car parts.


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