Grandsport cam swap issues...
Thread Starter
Pro
Joined: Jul 2011
Posts: 515
Likes: 1
From: Boca ARton FL
Grandsport cam swap issues...
Was suppose to help a buddy of mine do a cam swap on my 11 GS today, things came up on my end so he took the car to his shop and said the swap was on him, nice. Noon, phone rings, problem one, "Your car has a 3 bolt cam", huh, all my research showed later LS3's to have a one bolt, since my car has 3k miles on it and gets driven as a toy I figured let's not rock the boat and ordered a one bolt cam, he scrambled and came up with the parts to fix it..... 3pm phone rings, "ahh this balancer won't fit, they must have changed the front cover for the dry sump", great no under drive pulley for me.. I realize a lot of guys aren't modding their GS's just yet but it amazes me what all they did to this car to make it different from the base only to sell a few hundred a year (manual tranny dry sump combo).... Think I have a tuning reservation Wed and am going to try and tune it on E85 as well.
Mod's will be , Vararam, Spin's cam, Lunati Spring package and Corn tune....
Mod's will be , Vararam, Spin's cam, Lunati Spring package and Corn tune....
Last edited by Kerrdogg; Mar 10, 2012 at 07:46 PM.
Pro
Joined: Jul 2006
Posts: 552
Likes: 28
From: North Las Vegas Nevada
3 bolt cam
A freind of mine had the very same problem. Apparently the 6 speed manual dry sump LS3 C6's had 3 bolt cams. If you install/convert to a single bolt cam with the single bolt cam gear, you may have interference problems with the timing gear cover. If a 3 bolt cam came with the engine, you should install a 3 bolt cam back in it.
Last edited by Vegas Panton; Mar 11, 2012 at 11:03 PM. Reason: need to proof read better
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Thread Starter
Pro
Joined: Jul 2011
Posts: 515
Likes: 1
From: Boca ARton FL
Car is running fine with it's new 1 bolt cam, I guess GM feels 3 small bolts hand tightened (yeah right) is better than one larger bolt? Just glad I didn't buy the two piece timing cover I was looking at as that wouldn't have fit either...
Marc8090 you are correct GM made 1699 of the 2011 GS with M/T and therefore dry sumps, still not a lot for doing something special. Now imagine I had no idea when I bought it, I just liked the big fenders and fancy brake rotors
.
RichS was your GS an auto or stick?
Marc8090 you are correct GM made 1699 of the 2011 GS with M/T and therefore dry sumps, still not a lot for doing something special. Now imagine I had no idea when I bought it, I just liked the big fenders and fancy brake rotors
.RichS was your GS an auto or stick?
Drifting
Joined: Dec 2009
Posts: 1,523
Likes: 12
From: OH
) before I spend the $$$ on the tune this week.
Le Mans Master
Joined: May 2011
Posts: 5,022
Likes: 18
From: Tampa FL (formerly Justinjor)
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Will you need bigger injectors/fuel pump to flow the required fuel to support the 480+ you're making now/will be making after the tune?
Le Mans Master
Joined: Aug 1999
Posts: 7,339
Likes: 137
From: WilkesBarre PA
Car is running fine with it's new 1 bolt cam, I guess GM feels 3 small bolts hand tightened (yeah right) is better than one larger bolt? Just glad I didn't buy the two piece timing cover I was looking at as that wouldn't have fit either...
Marc8090 you are correct GM made 1699 of the 2011 GS with M/T and therefore dry sumps, still not a lot for doing something special. Now imagine I had no idea when I bought it, I just liked the big fenders and fancy brake rotors .
RichS was your GS an auto or stick?
Marc8090 you are correct GM made 1699 of the 2011 GS with M/T and therefore dry sumps, still not a lot for doing something special. Now imagine I had no idea when I bought it, I just liked the big fenders and fancy brake rotors
.RichS was your GS an auto or stick?