americanfisher93

im sure there is a sticky or some **** out there already but im having trouble finding it, i am getting the tf tw 170 heads. the one with 2.02 intake valves. I need to know which cams can fit in there without any p-v clearence problems, obviously tf stage 1 will and i believe stage 2, but im not very sure, and any help would be greatly apprecieated. I have stock pistons, along with a intake to match the heads, and a full exhaust system.

Duncan_GT

There's a plethora of cams out there that will work. Bottom line is that you'll still have to measure ptv clearance

americanfisher93

is there an easier way to do that rather than litereally installl he cam and turn the lywheel to see if they clash?

reldla1996

I can tell you I ran the Crane "Cobra" cam with my TF TW heads, with 1.7 Crane Cobra roller rockers, for many years without issue. To be sure, yes, you have to turn the engine over with a head (finger tight bolted) on the block, with clay on the piston, to check pv clearance.

mjr46

no short cuts for checking ptv.....or just not check and pray it's okay

americanfisher93

Alright yall i appreciate all the help than, i guess the smartest thing would be to manualy check it.

tinman

The cost on checking P/V clearance is nearly nothing, just takes a few minutes to do.
In return you have the piece of mind that you know you did the job right....

americanfisher93

my biggest thing is that i am going to have to send my cam back in if i get one to big, now can you explain to me how to check it? I mean do i have to check every cylinder, of much clearence is enough clearence is there a certain clay that wont stick to the cylinders etc.

bluebeastsrt

check out youtube. Probably a video on there showing step by step.

tinman

No, you only need to check 1 cylinder, I always check #1 but you could check any of them.......