LQ4 with T-Rex 317 will LSA heads work?
09-02-2014, 09:05 AM
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LQ4 with T-Rex 317 will LSA heads work? Hi,
Current setup is LQ4, trex, 317 heads, 93 octane
The plan is to add LSA heads and ls3 manifold i have sitting in a closet. Will these heads work with a trex cam and doing a turbo and cam later.
The current setup I dont rev past 6200rpms it seems to be not as smooth after that.
Current setup is LQ4, trex, 317 heads, 93 octane
The plan is to add LSA heads and ls3 manifold i have sitting in a closet. Will these heads work with a trex cam and doing a turbo and cam later.
The current setup I dont rev past 6200rpms it seems to be not as smooth after that.
09-02-2014, 09:18 AM
#2
If you don't rev past 6200, you're not getting any of the benefits of the T-Rex. That's a cam designed for higher RPM.
Do you have a dyno graph showing the upper RPMs? You may need to figure out if the springs/pushrods/rocker combo you have is the issue, unless you plan to replace all of them with the LSA heads? But it could be a fueling or spark issue as well, and that won't go away with a swap of heads.
The LSA heads, being a square port design, will not really love the T-Rex. There's a ton of overlap with the T-Rex, especially in a 364cid motor with only a 4" bore for those heads to work ideally.
Do you have a dyno graph showing the upper RPMs? You may need to figure out if the springs/pushrods/rocker combo you have is the issue, unless you plan to replace all of them with the LSA heads? But it could be a fueling or spark issue as well, and that won't go away with a swap of heads.
The LSA heads, being a square port design, will not really love the T-Rex. There's a ton of overlap with the T-Rex, especially in a 364cid motor with only a 4" bore for those heads to work ideally.
