800HP LS3 valve train
Thread Starter
Burning Brakes
Joined: Jan 2017
Posts: 951
Likes: 42
From: Lincoln Ne
800HP LS3 valve train
Iv done a lot of searching but haven't came up with anything that really helps my situation. Some of you may have seen my twin turbo build going on, basically twin 62mm turbos. I want to be right around the 800hp mark, my engine is completely stock right now but I know boosting an engine reduces the effective spring pressure on the valves. I would like to upgrade my valve train before getting it tuned, I will be running E85. My question is what do I exactly need to be a somewhat reliable 800hp engine? Just a basic spring kit? Full cam kit? Maybe nothing? This car gets daily driven and will also be doing many 1/2 mile and 1 mile events. Any help would be great 
Thread Starter
Burning Brakes
Joined: Jan 2017
Posts: 951
Likes: 42
From: Lincoln Ne
I think I will get a full cam kit from BTR but to replace lifters I would need to remove the heads therefore I should probably stud it and new gaskets at that point?
Instructor
Joined: Sep 2014
Posts: 156
Likes: 5
From: Long Island New York
Yes heads have to come off to access the lifters. Might as well stud them and do new head gaskets while you're at it
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Just springs. No need to touch rockers or lifters. Hell even springs is a stretch. Ive done 800-815rwhp on bone stock valve covers never off factory oil change ls3 motors with 500-700 miles on them 4 times now and all those cars have a ton if miles now.
Thread Starter
Burning Brakes
Joined: Jan 2017
Posts: 951
Likes: 42
From: Lincoln Ne
Craig at BTR gathered a cam kit together for me, so springs push rods etc are covered. My only real question now is lifters, I dont mind spending the extra money but is it necessary? I would prefer not to remove the heads as my hot side of the turbo kit is basically molded around the engine and really sucks to take off.. 
Last edited by g23crawler; Nov 22, 2017 at 09:48 AM.
Instructor
Joined: Sep 2014
Posts: 156
Likes: 5
From: Long Island New York
Craig at BTR gathered a cam kit together for me, so springs push rods etc are covered. My only real question now is lifters, I dont mind spending the extra money but is it necessary? I would prefer not to remove the heads as my hot side of the turbo kit is basically molded around the engine and really sucks to take off..
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Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
I wouldn't bother with lifters unless you're pulling the heads anyways or just being pre-emptive and changing the head gaskets/studs anyways. I finally changed mine at like 180K miles only because I had the heads off anyways (blew head gasket). It did quieten things down some but it wasn't bad to begin with.
Last edited by schpenxel; Nov 23, 2017 at 10:13 PM.