Biggest safe cam AS 5.3's 11/1 CR?
02-15-2005, 10:13 PM
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JRP, so you're saying that I could go to like .600 lift and say 233 duration and still have ~.100-.080 PV clearance? And not have to worry?
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02-16-2005, 01:20 PM
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You should always check p/v whenever you go bigger than stock. FWIW if your heads are milled and you have a 2.02 valve the MS3 will need to be flycut to fit. I'm doing mine very shortly and can tell you how much I flycut.
02-16-2005, 02:08 PM
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Vortech, I was looking at the Comp 228/230 .571/.573 112 lsa which uses the XE lobes. I know there are no PV issues with that cam. What I would really like to install is the 228/230 .588/.592 112+2 which uses the XER lobe. In your opinion would there be plenty of PV? I just don't want the valves anywhere near the piston tops.
02-16-2005, 02:27 PM
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Bro I wish I could give you a definite answer but I can't. I know with my AS heads with the 228/230 cam there was alot of clearance-over .100 thou. BUT my heads were unmilled and I used the factory .060 MLS gasket. The XER 228/230 would have less advertised duration so it may work BUT I don't want to say yes or no without checking. FWIW talking to Allan at Futral the F13 will clear with .015 thou milled using a .040 gasket and a 2.02 valve. Another thing to note is Jay's valve length my be different than stock. Dude buy a cam your comfortable with and just check it-flycutting is no big deal. It's alot cheaper and easier than repairing your motor and heads.
02-17-2005, 09:09 AM
#14
Originally Posted by Vortech
Bro I wish I could give you a definite answer but I can't. I know with my AS heads with the 228/230 cam there was alot of clearance-over .100 thou. BUT my heads were unmilled and I used the factory .060 MLS gasket. The XER 228/230 would have less advertised duration so it may work BUT I don't want to say yes or no without checking. FWIW talking to Allan at Futral the F13 will clear with .015 thou milled using a .040 gasket and a 2.02 valve. Another thing to note is Jay's valve length my be different than stock. Dude buy a cam your comfortable with and just check it-flycutting is no big deal. It's alot cheaper and easier than repairing your motor and heads.
I say the f13 would be good for you or even the f11 if you dont want to take a chance. they are both great cams. H0wever the cam you list will perform well too.
