Stock Heads for FI
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Yep, from 11:1 to to stock.
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
Last edited by Ed Blown Vert; Dec 21, 2004 at 01:23 PM.
Originally Posted by Ed Blown Vert
Yep, from 11:1 to to stock.
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
Thread Starter
Joined: Nov 2001
Posts: 3,066
Likes: 0
From: Sunny San Diego
Originally Posted by Ed Blown Vert
Yep, from 11:1 to to stock.
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
I just don't know if I want to spend more money on 6.0L heads.
I know lowering the CR will help. But how much can I lose from not having ported heads? And larger valves?
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Originally Posted by Country Boy
Whats the chamber size on the stock 6.0s? How about Valve sizes?
If you go stock, why not get a set of 6.0 heads for the 70cc chambers, do a cleanup hone on them, and maybe a valve job. Not a bad idea to go with bigger valves on the exhaust side.
Originally Posted by Pro Stock John
Oh I wanted to add that 6.0 heads I believe have smaller intake and exhaust valves than stock LS1 heads.
I may do the same. Sell me stage 2 5.3s and get a set of stock 6.0s with a valvejob and maybe bigger valves.
SSU Moderator
Joined: Nov 2001
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From: Austin, TX
what you lose in cfm you can pic up in power from the added timing and less detonation with the lower cr. boost will obviously go up because of the lack of resistance in the motor, but you shouldnt so much get a power increase from that boost.
If you are forcing the air in it shouldn't matter. Don't get thick gaskets, keep your quench tight. put in some head studs and cc the chambers to get them the same.
If you are forcing the air in it shouldn't matter. Don't get thick gaskets, keep your quench tight. put in some head studs and cc the chambers to get them the same.
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Originally Posted by Country Boy
By Tims link above, the LS1, LS6 and 6.0s all have the same valve sizes. The 5.3s have the smaller valves.
I may do the same. Sell me stage 2 5.3s and get a set of stock 6.0s with a valvejob and maybe bigger valves.
I may do the same. Sell me stage 2 5.3s and get a set of stock 6.0s with a valvejob and maybe bigger valves.
But I also thought that the 6.0L has smaller valves. :dunno: