TREX and Patriot IIIs ????????
TREX and Patriot IIIs ???????? I am currently running the Trex and comp 921s in my car... I am purchasing a set of Patriot LS6 stage IIIs from a member on here and had a few questions... they are 64cc down to 59ccs... 2.08 1.60s.....
Will i need to flycut the pistons to make this setup work if so how much.. and what head gaskets do i need to run as well as head bolts or studs..
thanks
david
Will i need to flycut the pistons to make this setup work if so how much.. and what head gaskets do i need to run as well as head bolts or studs..
thanks
david
ur running the trex with 921s? i was under the impression those couldnt handle that type of abuse. ne who u will definatly need to flycutt for that kind of milling and the machine shop will need ur entire short block to check it. also i would reccomend arp everything on the bolts and u could run cometic gaskets. maybe a .040 gasket would ok i guess. or u could stack 2 of them. i would ask the engine builder.
can i not flycut the pistons myself?????? im new to this heads thing.... and yes it is a stock 346.....stock bore.......... i need info before i make this purchase.
thanks
thanks
Thats what i thought but they were mentioning me needing to take it to the machine shop etc...... my only question is how do i know how much to flycut??? and as far as the gaskets go what will it change running 2 instead of one... what does everyone think...
anyone
thanks
anyone
thanks
I was gonna buy the same heads.. but read many places on here that stage 3 heads are NOT meant for a 3.9 bore.
I am not really sure why I couldent use the stage 3 heads wont work on a stock 346. Just wanted you to know cause I was looking at the same heads
I am not really sure why I couldent use the stage 3 heads wont work on a stock 346. Just wanted you to know cause I was looking at the same heads
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Yeah, even if the valve misses the bore in the block, you would still have major valve shrouding issues hindering flow. But yeah, any factory head that has been decked would not clear the pistons without flycutting with that cam.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
Flycut 2cc
.080 intake and exhaust but it has to be done with a bit bigger than a 2.08 valve seat size. Be careful with that. Like 2.100 at least
IMO, just my 2 cents get a set of stage 1 (stock valved) LS6 (243) castings, ported and had finished. No flycut involved and a healthy 30rwhp for less than a Grand.
.080 intake and exhaust but it has to be done with a bit bigger than a 2.08 valve seat size. Be careful with that. Like 2.100 at least
IMO, just my 2 cents get a set of stage 1 (stock valved) LS6 (243) castings, ported and had finished. No flycut involved and a healthy 30rwhp for less than a Grand.
We do not suggest the stage III on a stock bore because of the valve shrouding. The intake runner size will depend on how old the heads are. Like Predator said, for $1095.00 we can do a set of brand new CNC ported 243's with oem (non-sodium) valves and Patriot Gold springs.
We do not suggest the stage III on a stock bore because of the valve shrouding. The intake runner size will depend on how old the heads are. Like Predator said, for $1095.00 we can do a set of brand new CNC ported 243's with oem (non-sodium) valves and Patriot Gold springs.
