Cam swap on '07 5.3L...
Jun 11, 2007 | 06:47 PM
#11
Staging Lane
Joined: Jan 2007
Posts: 96
Likes: 0
From: Holt, MO
Just had one of those Active Fuel Management lifters fail on my truck with 6500 miles on it. They had to remove the head and all that to fix it. The tech said that with higher lift cams, you might have an increased failure rate with those lifters. Said that you can't replace them with standard lifters. Not sure if that is true or not. Someone will make a regular lifter to fit them someday.
Jun 12, 2007 | 07:24 AM
#13
TECH Resident
Joined: Nov 2006
Posts: 881
Likes: 1
From: San Antonio
Originally Posted by cherrypopper
i hope it aint true but lets wait and see....what i am wondering is if with diffrent heads everything will change or whats going to happen with the flex/fuel or computer
Jun 18, 2007 | 01:10 AM
#14
11 Second Truck Club
Joined: Dec 2006
Posts: 83
Likes: 0
From: RGV,TEXAS
Originally Posted by cherrypopper
everything is the same u just need the sproket from and 07 z06 ....the sproket on the 07 is a 1 bolt and the z06 one is has the 3 holes for the cam..also with the original spoket u cant make it stay on iven with tunning... nothing gets affected with flex fuel or anything the only problem is that sproket ...the part number for the spoket is: part number: 12586481 and that is it ..
Jun 18, 2007 | 11:02 AM
#15
I'm assuming none of this would be necessary on the 07 NNBS 4.8 liter. The 4.8 (LY2) doesn't have VVT or AFM or FlexFuel for that matter. I'm considering a small cam swap for my 4.8 but don't want to run into any surprises.
Anyone happen to know the stock cam specs on the NNBS 07's?
Anyone happen to know the stock cam specs on the NNBS 07's?
Jun 19, 2007 | 08:01 AM
#16
Originally Posted by colyneedsv8
have you tried? It has been confirmed that the profiles are slightly different on 4 of the cylinders, but has anyone actually put in a normal aftermarket camshaft to see what happens?
or did you just say it wont work because you don't think it will?
or did you just say it wont work because you don't think it will?
geez.
Jun 19, 2007 | 08:53 AM
#17
TECH Resident
Joined: Nov 2006
Posts: 881
Likes: 1
From: San Antonio
Originally Posted by Steel Chicken
No. I based my statement upon a very good thread on ls1tech.com where someone posted a GM document specifying details for the DOD cams and additional parts. I didn't just "make it up".
geez.
geez.
Jul 5, 2007 | 09:12 AM
#18
TECH Senior Member
Joined: Nov 2001
Posts: 10,349
Likes: 0
If I can turn off the DOD in tuning and run a standard ported 5.3 head with the new sprocket cam we should be ok right?
Maybe it'll force us to use a smaller lift/softer lobe cam but that shouldnt be a huge deal.
BTW - I have an 07 5.3 TB
Thanks,
Chris
Maybe it'll force us to use a smaller lift/softer lobe cam but that shouldnt be a huge deal.
BTW - I have an 07 5.3 TB
Thanks,
Chris
