Gen IV to 3 bolt cam
#11
Thread Starter
Moderator
iTrader: (20)
Joined: Feb 2006
Posts: 7,271
Likes: 62
From: South Shore, MA
Yea it is out of the car. I will be doing the cam swap and removing VVT while it is out.
No this engine is for a DD. I picked up a saab 9-7x with a blown 5.3 for really cheap and the L96 is going into it.
No this engine is for a DD. I picked up a saab 9-7x with a blown 5.3 for really cheap and the L96 is going into it.
#12
I can't remember which ones had it but some had the afm lifters with the too cover too. On the more aggressive ramps the covers need replaced with a ls3 top and lifters changed to gmpp ls7 lifters. Ls6 isn't too crazy a cam but I had problems running the dod lifters. They collapse around 3k rpm or sooner with aftermarket valve springs. Simply shutting off the afm wasn't enough. Just my .02
#17
Take some pics Rob , I haven't got to tare down any VVT stuff yet either .
Since we're talking lifters I haven't had any issues with my LS7 lifters running over .600 lift for the last 3 years or so . At that time it was what everyone was using .
Since we're talking lifters I haven't had any issues with my LS7 lifters running over .600 lift for the last 3 years or so . At that time it was what everyone was using .
#19
Thread Starter
Moderator
iTrader: (20)
Joined: Feb 2006
Posts: 7,271
Likes: 62
From: South Shore, MA
Alright so I slid in the LS6 cam last night... one thing I noticed is that I think the timing gears for the single bolt VVT is a different size than the 3 bolt 4x. Just for ***** I tossed the cam gear in place with the new chain but left on the crank timing gear. There was a ton of play in the chain.
So for those of you who didn't know, or who care for that matter, the VVT timing gears are smaller by a little bit. If you swap out VVT make sure you swap EVERYTHING. If not it would lead to the cam spinning slightly slower than it should... it wouldn't take long before you crunch literally every exhaust valve.
I had always assumed they used a longer chain to accomplish the ability to advance or retard the cam, but it looks like it is a combo effort.
So for those of you who didn't know, or who care for that matter, the VVT timing gears are smaller by a little bit. If you swap out VVT make sure you swap EVERYTHING. If not it would lead to the cam spinning slightly slower than it should... it wouldn't take long before you crunch literally every exhaust valve.
I had always assumed they used a longer chain to accomplish the ability to advance or retard the cam, but it looks like it is a combo effort.
Thread
Thread Starter
Forum
Replies
Last Post
Suburban2500
INTERNAL ENGINE MODIFICATIONS
31
Jul 19, 2015 04:50 PM
Blackrat48
GM Engine & Exhaust Performance
2
Jul 8, 2015 05:28 PM







