Abdullah

iTrader: (2)

is it safe to mill stock LS1 heads to 0.030" with stock valves using the texas speed 233/239 R2 cam and using stock GM head gasket? will there be piston to valve clearance problem?

thanks for help.

N4cer

iTrader: (11)

You'd have to measure. But since you're talking about removing the heads, spend an extra few bucks and 20 minutes and flycut, so it won't matter. Question answered!

PREDATOR-Z

Contact Texas Speed, they will answer that for sure.
It also depends on the LSA/ICL

GuitsBoy

iTrader: (4)

Ill bet it wont fit. They said they couldnt squeeze any more than a .015 mill on the smaller Tq2 cam.

Abdullah

iTrader: (2)

thanks for the replies. looks like i'll be enough with 0.015" mill. now is the 0.015" mill safe with the same texas speed 233/239 R2 cam?

Jefro6996

iTrader: (21)

I would call texas speed and make sure. But even then i would still measure p/v clearance

NassyVette

iTrader: (22)

Only way to be certain is to measure ptv clearance. It's not that difficult and well worth the time.

redtail2426

iTrader: (10)

that wont fit with a .030 mill.....I bet it would be close with a .015 but measure to be sure...

ls2 bait

iTrader: (11)

ive tried to ask texas speed a similar question 5-6 times and have yet to get a reply so good luck. but thats going to prob be your best source dor the answer u want.

Abdullah

iTrader: (2)

how to measure ptv clearance?

GuitsBoy

iTrader: (4)

You can either use modeling clay, or the method I prefer, a checker spring and a dial indicator on the retainer.

Install a low tension checker spring, and tighten the rocker until it just barely takes out any play, but dosnt start to compress the cherker spring. Now rotate the motor from 10* btdc to 10* atdc stopping every 2 degrees to take a measurement. Simply push the valve down till it hits the piston and see how far it travels via the dial indicator.

Abdullah

iTrader: (2)

what is flycutting the pistons? and how to do it accuartly?

now my car is with out heads i mean the heads are unbolted and the pistons are appearing can i do fly cut to the pistons that way while the engine is still in the car?

and also how safe is flycuting to the pistons? to the engine etc.....?