will i need to flycut?????

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Jan 28, 2010 | 07:31 PM

predator200289

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From: Hutchinson, KS

will i need to flycut?????

Im putting 243s on my car and having them deck .020 for 11:1 on my stock bottom end ls1. Im planning on running a trex cam and im wondering if im gonna have to flycut the pistons????

Jan 28, 2010 | 07:40 PM

LS1MCSS

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From: Dover, Arkansas

I don't think you would have to. My last engine had a bigger cam and I decked the heads .035 and went to a thinner gasket without needing to flycut. Depending on how much preload you have right now on the lifters, you might need shorter pushrods. When you mill the heads, you increase the amount of preload on the lifters.

Jan 28, 2010 | 07:42 PM

j_dover

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i didnt and im running about the same setup

Jan 28, 2010 | 07:48 PM

Slowhawk

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From: Bridgewater,Ma

The last T-rex we did had .070 clearance on the intake valve with stock heads.So I would expect to cut the pistons.Of course there is probly alot of people that don't and run .020 clearance.I'll bet the valves are making there own reliefs.

Jan 28, 2010 | 07:58 PM

SOMbitch

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That cam is designed to BARELY clear for stock H/G specs.. No way I would I would ever run that setup...... You better measure if you decide to try it.... Ask TR (shane) it's their cam....