Anyone running the F4 cam 226/226 .575 @114 LSA?
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What is the difference between the F10 228/228 .576
& the F4 226/226 .575???
I'm only running a Vig 3200 & 3:42's...w/ vararam LS6 intake, & LG headers, no cats.
& the F4 226/226 .575???
I'm only running a Vig 3200 & 3:42's...w/ vararam LS6 intake, & LG headers, no cats.
Last edited by YO-EL; 01-24-2005 at 07:49 PM.
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Originally Posted by YO-EL
What is the difference between the F10 228/228 .576
& the F4 226/226 .575???
I'm only running a Vig 3200 & 3:42's...w/ vararam LS6 intake, & LG headers, no cats.
& the F4 226/226 .575???
I'm only running a Vig 3200 & 3:42's...w/ vararam LS6 intake, & LG headers, no cats.
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The F13 should have a choppier idle and some may or may not like that much. I have similiar mods as you, YO-EL, and the cam works great. There is noticeable chop and I got the cam on a 114LSA. If I could do it again, I would get the 112LSA. The F10 idles better than a TR224 and makes about 10rwhp more. The F11, F12 or F13 are great choice as well if you wanted a little more. I decided on a lower lift, 0.570"-0.580" since the '98 heads do not flow anymore going to 0.600" lift.
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I went with the F12. It has a lopey idle and drove good on my stock tune. It needs some gear though, 3.73's with an A4 or 4.10's with an M6. I don't have any dyno #'s yet, but I will in about a month. Good luck on your choice. I don't think you'll go wrong with any of the FMS cams that were mentioned.