LT4 Boost Limits
Thread Starter
Intermediate
Joined: Sep 2011
Posts: 44
Likes: 0
From: Beaumont Texas
LT4 Boost Limits
Is there a consensus as to how much boost an LT4 can take and still be expected to live?
I'm at 10 - 11 lbs. and feel I could go a little higher without too much danger.
Build is a ZO6 with headwork, cam, bigger injectors, 2" long tubes & cat delete X pipe. Fuel system upgraded for E85 and Magnuson 2650. No water/meth or Nitrous.
I'm at 10 - 11 lbs. and feel I could go a little higher without too much danger.
Build is a ZO6 with headwork, cam, bigger injectors, 2" long tubes & cat delete X pipe. Fuel system upgraded for E85 and Magnuson 2650. No water/meth or Nitrous.
Drifting
Joined: Jul 2015
Posts: 1,681
Likes: 346
From: NY
You're well beyond safe to turn up with the fuel support. Too many variables on different builds and applications to state a specific boost number. 10-11 is super safe however on a 2650 and your listed mods.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
ttt
I agree to many variables no two motor are builds are the same.
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
More boost will probably lessen the amount of e85 you can run. Assuming you're on the 30% over injectors? Your limit will start to be the high side. e50-60 and 14-16 psi is where I ran for a while before I went to port injection on top of DI. I gave it the beans with port injection.
Last edited by C7&7; Jun 16, 2021 at 01:41 PM.
Pro
Joined: Mar 2018
Posts: 620
Likes: 91
From: Sacramento CA
More boost will probably lessen the amount of e85 you can run. Assuming you're on the 30% over injectors? Your limit will start to be the high side. e50-60 and 14-16 psi is where I ran for a while before I went to port injection on top of DI. I gave it the beans with port injection.
-thanks
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
