PTVC with a aftermarket cam?
11-14-2006, 10:08 PM
#3
valve event timing has more to do with it than just lift BUT that said you are worrying over nothing. I have yet to hear of a stock shortblock motor reguardless of how wild the cam and head milling are have a problem. My heads are milled close to that much and I run a little more lift and a .026 gasket with only wonderful results.
11-14-2006, 10:17 PM
#4
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yea, duration has more to do with PTVC than lift alone, ofcourse lift is important, but duration is a key factor as well, just double check with your cam maker
11-14-2006, 11:06 PM
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To answer a few questions, yes, I'm worring about the valves kissing a piston. Also, my cam specs are .540/.540 232/242 109lsa.
Sorry I couldn't give a little bit more info, I was at work when I posted this thread.
BTW, I'm using regular felpro gaskets and stock milled heads.
Sorry I couldn't give a little bit more info, I was at work when I posted this thread.
BTW, I'm using regular felpro gaskets and stock milled heads.
11-15-2006, 01:30 PM
#6
Looks like a mean cam. Im thinking of having CompCams custom grind a cam for me with similar, but slightly different specs. This will also be going on a stock bottom end, and from what I have read the PTVC should be ok. Who did you get that cam from?
11-15-2006, 02:43 PM
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Yea I also run a bigger lift and have the heads milled and ported and run regular felpro head gaskets without a problem. Check with the machine shop or engine builder though those guys know if its ok off the top of there head.
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11-15-2006, 06:08 PM
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Originally Posted by foggedz
Looks like a mean cam. Im thinking of having CompCams custom grind a cam for me with similar, but slightly different specs. This will also be going on a stock bottom end, and from what I have read the PTVC should be ok. Who did you get that cam from?
The cam is a Joe Overton grind. I've had it im my car before with a differnt engine. It sounds f-in wicked!
11-15-2006, 07:09 PM
#9
I would have milled less and used a gasket that was thinner. The Felpro IMO is best left to zero decked blocks with it's .039 thickness. I run the Mr. Gasket .026 after AI's chamber work and roughly a .030 cut on the heads and an asumed .025 deck this is about 11.5:1 on a stock shortblock. Cranks about 230psi and runs wonderfully.
11-15-2006, 09:50 PM
#10
Originally Posted by Formula_LT1
Yea, its on a stock bottom end.
The cam is a Joe Overton grind. I've had it im my car before with a differnt engine. It sounds f-in wicked!
The cam is a Joe Overton grind. I've had it im my car before with a differnt engine. It sounds f-in wicked!
