PUBLIC_FRENEMY_#1

222/228 .595/.575 lift
241's milled .040 with stock valves
stock shortblock

I really don't want to have to measure P2V, I have been told that it should be fine but I am still a little concerned. Does anyone have experience with something similar or care to speculate? Thanks

dw2000ta

iTrader: (4)

I just had a lingenfelter gt1 cam installed which is 229/242/114 .631/.631 on stock 241's with stock valves. the only thing i changed were the valve springs and the push rods. .650 valve spring kit to handle the lift of the cam and changed the stock PR's to chromemoly from comp cams. my PTV is very close but no issues at all. in my opinion you should be just fine and will enjoy the cam you chose

senicalj4579

iTrader: (41)

You should measure to be safe but im sure you already know that.

PUBLIC_FRENEMY_#1

wow that is a pretty large cam, how close was your P2V and what head gaskets did you use?

dw2000ta

iTrader: (4)

to be quite honest i dont know what the PTV is... its the stock head gasket.. we never pulled the heads to measure. i know its close though.. i know it sounds risky but the engineers and Lingenfelter assured me that it would clear but it would be very close only if install striahgt up dot to dot. so we installed the cam spun the motor by hand to check for an obvious hang up... nothing there so in the dyno tune we worked it up in rpms very slowly through several dyno pulls until i got to 6200 rpms.

not the smartest thing to do but i was prepared for the worst despite several offers from my shop to pull the heads and check like i should have. I was ready to buy heads if something happened.. now i can be patient buy the heads, exhaust, and intake manifold that i want while still driving my basically 400hp T/A.

bww3588

iTrader: (49)

Consider this...how much does it cost to pull the heads and check? Now how much is it going to cost to pull The heads and replace what broke when the piston hit the valve?.

Not saying you will or will not crash valves, but in my opinion, better safe than sorry.

redtail2426

iTrader: (10)

you dont have to pull the heads to check,just buy a dial indicator and put it on top of the valve with a checker spring and go through the range and keep checking till you find the tightest spot.way easier and more accurate

JB_97ws6TA

iTrader: (6)

Do you not have to run a solid lifter with a checking spring? I really don't want to have to do this? What is a good inexpensive spring compressor, any suggestions for a degree wheel?

redtail2426

iTrader: (10)

take a spring from a toilet paper holder,and set it up light enough so it just keeps the valve up,its light enough so it wont compress the lifter at all

chrisfrost

iTrader: (8)

Lift is a very small concern with PTV ,,,,,duration is where problems occur . With that cam You will have no issues with 0 adv or ret .

JB_97ws6TA

iTrader: (6)

The cam has 2 degrees of advance ground in