Which 1.6 Rockers are you guys using?
Registered User
Joined: May 2005
Posts: 2,161
From: Colorado
Re: Which 1.6 Rockers are you guys using?
was using self aligning GMPP 1.6 roller rockers out of the hotcam kit, 3/8 stud. Selling that and upgrading to pro mags, 7/16 stud, and guideplates. From what I hear should be the cat's @ss.
Registered User
Joined: Oct 2005
Posts: 685
From: Bakersfield
Re: Which 1.6 Rockers are you guys using?
I see a lot of you guys are running the 1300 series Pro Magnums, what are the advantages of the 1100 series "Hi Tech" stainless rocker arms? They sure cost a lot, but I'm seriously considering buying a pair.
Registered User
Joined: Mar 2006
Posts: 139
From: Pismo Beach, California
Re: Which 1.6 Rockers are you guys using?
hmmm i wanted to throw on some 1.6 rr on my camaro after header install... who has the best pricing nowadays? Self Aligning is the way to go to i here... right?
Registered User
Joined: Mar 2006
Posts: 139
From: Pismo Beach, California
Re: Which 1.6 Rockers are you guys using?
I got these ordered.... What else do I need?
1.6 Roller Rockers GM PART # 12370839
LT4 Spring GM PART # 12495494
Valve Spring Cap Kit, LT4 GM PART # 12495492
Engine Valve Spring Cap Key GM PART # 12495503
Valve spring shims GM PART # 10212809
3/8 Stud Pkg GM PART # 12371058
Do i need guideplates?
1.6 Roller Rockers GM PART # 12370839
LT4 Spring GM PART # 12495494
Valve Spring Cap Kit, LT4 GM PART # 12495492
Engine Valve Spring Cap Key GM PART # 12495503
Valve spring shims GM PART # 10212809
3/8 Stud Pkg GM PART # 12371058
Do i need guideplates?
Thread Starter
Banned
Joined: Apr 2000
Posts: 1,444
Re: Which 1.6 Rockers are you guys using?
Originally Posted by LT1Mike
Do i need guideplates?
SA = Self-Aligning (don't need guide plates) <----- yours
12370839 Aluminum Roller Rocker Arm 1.6:1 Ratio
These small block 1.6:1 ratio aluminum rockers are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early model 3/8" rocker studs. These kits of 16 rockers include nuts and instruction sheets. They are self-aligning style rockers with washers between the rollers and the rocker body for improved wear characteristics. By reducing the length of the rocker stud slots, it improves the stiffness by 30% over comparable aftermarket designs. These rockers will accommodate up to .575" valve lift. One of the main advantages of these rockers is about 2 lbs-ft in rotation torque, which provides a quieter idle.
Technical Notes: When using a high lift camshaft, be sure to check for valve spring coil bind, retainer to seal clearance, and piston to valve clearance. When using valve covers with drippers, it may be necessary to remove them for proper rocker arm clearance. When using on cast iron head check for adequate pushrod clearance. Cannot be used on ZZ3 engines with orange valve springs.
These small block 1.6:1 ratio aluminum rockers are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early model 3/8" rocker studs. These kits of 16 rockers include nuts and instruction sheets. They are self-aligning style rockers with washers between the rollers and the rocker body for improved wear characteristics. By reducing the length of the rocker stud slots, it improves the stiffness by 30% over comparable aftermarket designs. These rockers will accommodate up to .575" valve lift. One of the main advantages of these rockers is about 2 lbs-ft in rotation torque, which provides a quieter idle.
Technical Notes: When using a high lift camshaft, be sure to check for valve spring coil bind, retainer to seal clearance, and piston to valve clearance. When using valve covers with drippers, it may be necessary to remove them for proper rocker arm clearance. When using on cast iron head check for adequate pushrod clearance. Cannot be used on ZZ3 engines with orange valve springs.
Last edited by user 647483; Jun 29, 2006 at 04:11 PM.
Registered User
Joined: Mar 2006
Posts: 139
From: Pismo Beach, California
Re: Which 1.6 Rockers are you guys using?
So then... I got everything I need? I heard 94s had hardened pushrods so no need for those.... what else do i need? or did my list cover everything
Registered User
Joined: Mar 2006
Posts: 139
From: Pismo Beach, California
Re: Which 1.6 Rockers are you guys using?
ok one last thing.... well three... 
1. Should i order another set of shims? they only come with ten... wondering if i need more... and oh...
2. does it look like i covered everything...as far as things i need for 1.6rr to run fine?
3. 3/8 are stock studs to right? sorry guys...
1. Should i order another set of shims? they only come with ten... wondering if i need more... and oh...
2. does it look like i covered everything...as far as things i need for 1.6rr to run fine?
3. 3/8 are stock studs to right? sorry guys...
Last edited by LT1Mike; Jun 29, 2006 at 11:30 PM.
Registered User
Joined: Aug 2000
Posts: 218
From: Connecticut
Re: Which 1.6 Rockers are you guys using?
You can run the stock studs if you are running the GMPP 1.6 SA rockers.You only need to upgrade the studs when running NSA rockers.As you need shoulder on the studs for the guide plates.One package of shims should be fine.