272 gen ll questions

[rmtz24]

as if last week i wiped a lobe off of my original cam in my 3.2 gen ll motor, for now i'm going to stick another cam in it, till i get my 3x00 motor done(it's my daily car) I went with the 272 cam from crane, my question is.. I have a set of pre-roller 3100 1.6 rocker arms i was going to stick on, the heads are ported and gasket matched, will i benefit from the added lift of the 1.6's??
Thanks for your help,

[Superdave]

the 272 is not a boost cam.. it's got too much overlap.


But yah, the 1.6's will give you a bit more lift.. just hope your piston to valve clearance is good enough, and you've got enough valve spring.

[rmtz24]

the 272 is not a boost cam.. it's got too much overlap.


But yah, the 1.6's will give you a bit more lift.. just hope your piston to valve clearance is good enough, and you've got enough valve spring.

thanks dave, i was hoping you'd chime in... well since the car was stolen some time ago and stripped of all turbo parts ect, this is now an N/A car, springs im not worried about(there big gm springs that were overkill b/c of the turbo), piston clearance is really the only other thing, I just was curious if they'd help at all.
Thanks,

[torq455]

well, if you had boost and didn't change CR, you should have pleanty of clearence.

[rmtz24]

well the cam is in and running pretty well, my tune has the idle up to around 1000 rpm's in drive so its pretty tame sounding, haven't had much of a chance to drive it but it seem's to rev a little faster, gonna try to drive it tomorow,
Thanks,

[torq455]

sweet! you'll enjoy it! i hear it sounds awesome with an idle between 700-800 rpm.

[rmtz24]

sweet! you'll enjoy it! i hear it sounds awesome with an idle between 700-800 rpm.

yup that's my next ticket start tuning it with an idle in drive around 850rpm's, seems to run real well and rev alot faster then the 260cam!

[Superdave]

It'll sound good around 900-1000.. that's about where you'll want to keep it so that there is plenty of vacuum for the brakes at idle.

You can bump up the spark timing at idle a few degrees, that'll make it idle a bit meaner..

[torq455]

yeah baby!! drool