Another Z06 cam question
Thread Starter
Pro
Joined: Dec 2005
Posts: 535
Likes: 2
From: Shorewood Illinois
Another Z06 cam question
I have the oppportunity to get an '02 Z06 cam very cheaply. Considering my car is a stock '98 LS1, and this cam comes out of an LS6 (which I thought had a smaller base circle cam) what would I need to do to correct the valvetrain geometry?
Can this be corrected with just longer pushrods?
Before the flaming begins - the only reason I'm considering this option is because the cam is essentially free. If I can't do this on a minimal budget, I won't do this at all (remember Santa's coming soon).
Couldn't find what I was looking for with the search button, so I'm hoping some guru's out there can hook me up....
S
Can this be corrected with just longer pushrods?
Before the flaming begins - the only reason I'm considering this option is because the cam is essentially free. If I can't do this on a minimal budget, I won't do this at all (remember Santa's coming soon).
Couldn't find what I was looking for with the search button, so I'm hoping some guru's out there can hook me up....
S
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
With the LS1 heads, the geometry will stay the same but you will need longer pushrods to maintain the lifter preload. Don't remember the difference in base circle between the two cams.
Racer
Joined: Jul 2006
Posts: 285
Likes: 1
From: Placentia CA
I'm in the middle of that swap right now. The 02 ZO6 Cam #12565308 has (as close as I can measure) a .050 smaller base circle than the cam I pulled out of my 02 LS1 Coupe. I'm actuly waiting for the longer pushrods right now. Be aware that you need to change the valve springs along with your new cam. I installed a new set of “Yellows” Old P/N 12565313 - New P/N 12586484. This is the spring that a 02-04 LS6 would come with.
Burning Brakes
Joined: Aug 2004
Posts: 837
Likes: 2
From: Derry NH
Originally Posted by RonSS
I'm in the middle of that swap right now. The 02 ZO6 Cam #12565308 has (as close as I can measure) a .050 smaller base circle than the cam I pulled out of my 02 LS1 Coupe. I'm actuly waiting for the longer pushrods right now. Be aware that you need to change the valve springs along with your new cam. I installed a new set of “Yellows” Old P/N 12565313 - New P/N 12586484. This is the spring that a 02-04 LS6 would come with.
Those springs will do the trick. The stockers won't do the job. Using the longer pushrods is all you need to correct for the base circle. The LS6 uses longer valves to compensate. Now, I know I am adding to the cost but I highly recommend changing the timing chain while you are in there. The LS2 timing chains are inexpensive (just the chain) and is an upgrade over the LS1 stock piece.
Melting Slicks
Joined: Oct 2006
Posts: 2,228
Likes: 5
From: Gainesville Georgia
Originally Posted by RonSS
I'm in the middle of that swap right now. The 02 ZO6 Cam #12565308 has (as close as I can measure) a .050 smaller base circle than the cam I pulled out of my 02 LS1 Coupe. I'm actuly waiting for the longer pushrods right now. Be aware that you need to change the valve springs along with your new cam. I installed a new set of “Yellows” Old P/N 12565313 - New P/N 12586484. This is the spring that a 02-04 LS6 would come with.
Thats what I've heard also. Thats a nice stock sounding/feeling cam that should give you a decent HP/Torq bump. Best of luck 
