F1_SS

A friend of mine says he has a stock bottom end ls1 with stock heads, i then asked him the spec on the cam and he said they were 240/248 .611/.618 on a 112 LSA. Im almost 100% sure they wont clear stock heads so i think he has aftermarket heads. Im wonder what your guyss opinions are on if that cam will clear stock heads?

Edit:he is basically saying he doesnt have a 383 stroked motor, i am saying he still has it. he gave me the specs on him cam and i think it wont clear stock bottom end with stock heads, now if he still has the 383 in the car then i think it would be a nice cam for a stroked motor.

jamnut

iTrader: (4)

I actually think that cam would fit better with stock heads than custom heads. Stock heads usually have smaller valves & less deck height than aftermarket heads. That means that you can usually fit bigger cams without flycutting on stock heads.

A ported head is usually going to be milled & that puts your valves closer to the pistons & a ported head usually has bigger valves. Bigger valves & less deck height = less P to V clearance.

The answer is that cam has a better chance of fitting a stock head than a ported milled head.

F1_SS

Well we are having a debate of whether or not he has a 383 stroked motor. i guess i shoudl have put that in my first post. Thats true that it will clear better then it would with milled heads. Ill edit my first post.

Raise

iTrader: (31)

well, i wouldnt try it w/o flycutting.

madpwr1

iTrader: (3)

couldn't he have stock heads/bottom end and flycut the pistons even if that cam was a little too big?

only one way to find out, do a tear down ... otherwise just take his word for it

just curious, what's the difference if he does have a 383 or not?

F1_SS

Longer stroke.

jamnut

iTrader: (4)

A stroker motor wouldn't make a difference either. If he is using flat top piston's with no valve relief's & the Quench area was setup the same as stock, P to V clearance would be the same with a 346 & a 383.