question about f cam

venom97 · Jan 26, 2007

i know that it is always recomended to check piston to valve clearance and every engine is different,but i was wondering if use of a f cam requires the stock pistons to be cut?

89streetbeast · Jan 26, 2007

depends on what your cam specs and valve size is .

ls1beater4eva · Jan 26, 2007

what heads are on the car?

venom97 · Jan 26, 2007

its got stock e 7s now,and i might be getting a set of ported e 7s with 1.90-1.60 valves

ls1beater4eva · Jan 26, 2007

ok well i personaly would check the pvc but i know for sure that a tfs 1 cam speced with 499/51 lift 221/225 dur@50 with 1.7 clear with no prob so you shoud be ok with f cam i would spin it over by hand befor starting it just to make sure nothing is binding up anywhere

Brn N Rubr · Jan 27, 2007

Currently I am running an F-cam with stock HO pistons (4 valve reliefs) and E7 heads with 1.94/1.60 valves. With 1.6 rockers I have no clearance issues. have fun!

venom97 · Jan 27, 2007

Brn N Rubr said:
Currently I am running an F-cam with stock HO pistons (4 valve reliefs) and E7 heads with 1.94/1.60 valves. With 1.6 rockers I have no clearance issues. have fun!

thanks alot man! thats what i was looking for,someone who is running a similar combo. i will still check, but i wanted to know before i bought the cam. thanks again

cardudeusa · Jan 27, 2007

I have the F cam and edelbrock performer 5.0 heads and no clearance issues. Althought I kick myself for going with an alfabet cam, so many better choices out there.

joncash · Jan 28, 2007

I'll agree that you should be just fine w/ that cam as far as clearance, but make sure that you're not using the original valve springs w/ the F-cam's lift. The clearance issues are a little different if the valves are hanging open when they shouldn't because the springs are worn out/inadequate. Crane makes a nice upgraded spring kit for the E7's that don't require any machine work if you're still on the stockers.

venom97 · Jan 28, 2007

joncash said:
I'll agree that you should be just fine w/ that cam as far as clearance, but make sure that you're not using the original valve springs w/ the F-cam's lift. The clearance issues are a little different if the valves are hanging open when they shouldn't because the springs are worn out/inadequate. Crane makes a nice upgraded spring kit for the E7's that don't require any machine work if you're still on the stockers.

they've actually got dual valve springs already so i should be all right there.

Modular2v · Jan 28, 2007

venom97 said:
they've actually got dual valve springs already so i should be all right there.

dual springs doesnt mean they will be ok for the cam!

86bluecobra · Jan 29, 2007

actually 2 heavy of a spring is as bad as 2 light of a spring. My bro inlaws 440 big block mopar has very heavy springs and he ate the lobes off his cam.

venom97 · Jan 29, 2007

Modular2v said:
dual springs doesnt mean they will be ok for the cam!

i realize that,what i was getting at was their not the originals.

blackened88lx · Jan 29, 2007

Have the springs checked to make sure they're still good. Then you should shim them to the correct seat pressure for your cam.

question about f cam

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