who HAS done a cam swap on a nnbs
Jul 9, 2008 | 07:09 PM
#1
Thread Starter
TECH Apprentice
Joined: Oct 2006
Posts: 360
Likes: 0
From: lubbock, tx
who HAS done a cam swap on a nnbs
i posted this in the internal engine department but i thought i would get more answers here.
i am about to put a cam in my truck and scoggin dickey was tryin to tell me you have to change ALL kinds of bs like lifters and rocker etc since its a VVT motor.....
allen @ nelson performance said all i need is a timing cover assembly from an 05-06 gto and the 3 bolt cam sprocket....
who here HAS done a cam on an 07-08 5.3 that knows what really HAS to be done?
i am about to put a cam in my truck and scoggin dickey was tryin to tell me you have to change ALL kinds of bs like lifters and rocker etc since its a VVT motor.....
allen @ nelson performance said all i need is a timing cover assembly from an 05-06 gto and the 3 bolt cam sprocket....
who here HAS done a cam on an 07-08 5.3 that knows what really HAS to be done?
Jul 9, 2008 | 08:53 PM
#2
TECH Resident
Joined: Nov 2001
Posts: 880
Likes: 1
From: Twin Cities
I've got a VVT cam installed. I'm not sure the VVT is that big of a benefit... It probably helps more with the AFM then on all 8 or they would have it the VVT on the Z06.
I'm having oil pressure issues due to valve spring pressure and the VVT. IMHO I'd go with a standard cam and skip the VVT until more testing is done. Supposedly Comp Cams is going to come out with a VVT line soon.
I'm having oil pressure issues due to valve spring pressure and the VVT. IMHO I'd go with a standard cam and skip the VVT until more testing is done. Supposedly Comp Cams is going to come out with a VVT line soon.
Last edited by MNC5; Jul 27, 2008 at 07:07 AM.
Jul 9, 2008 | 08:59 PM
#3
i got a cam installed in mine a 224/224 .581 112 lsa..and all i needed was the cam , springs, pushrods and the 3 bolt sprockets of an ls1 thats all you need.. and mine is a flexfuel and didnt need no lifters or anything
Jul 9, 2008 | 09:16 PM
#6
im really not sure on how much power but i do want to dyno my truck..it was on 26 inch Et Streets i need to go with 28's since i have 3.73's ..that run was in 75 degree weather with alot oh headwind and 89 oct gas they didnt have no 93 at the store..im currently running a 224/224 .581 112lsa on a 3600 pi stall
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Jul 10, 2008 | 07:46 AM
#10
5.3s (if its the truck in your sig) are not VVT only 6.0s and 6.2s. Its just a normal cam swap as in any previous LSx. Only difference on your 5.3 is that it has DOD which is uses 4 lifters that collapse when it goes into 4cyl mode. You have to pull the heads if you wish to replace the lifters...