I just installed new valve stem seals on my 90 Formula 350 and decided to install at set of Comp Cams Magnum roller tip rockers. Now I'm reading about self aligning vs. non self aligning, it seems I may have the non self aliging, do I need to pull these off and put the old factory stuff back on? Do I need to install guideplates if I wanna keep em, sounds like alot of work to put in guideplates. Any and all advice appreciated.
Rob
1990 Formula 350

 

If you pulled self aligners off, you need to put self aligners back on.

Otherwise you have to have the heads machined for guideplates.

Something has to keep the valvetrain in line or the rockers will slide off the tops of the valves eventually.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

Thanks engine boy, and from what I read the rocker arms I pulled off have the side tips that go on either side of the valve tip keeping everything lined up, since I'm not ready to pull the heads for guide plates I guess I get to put the old ones back on.

 

I'm looking into getting a set too. Does it look like a good product?

 

Y dont you return them and buy the Rockers self aligning? PN 1418-16

 

I just wish I had know earlier could have saved some time, I bought em from my friend he had not used em but they were for the earlier model, I did not look into it enough. They are nice though, look like good quality. I'm getting tired of playing with this car though ready to drive it.
Rob

 

Wanna sell the rockers?? Email me, I might know somebody looking for a set.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

WA90,

For about a hundred bucks more you can get fully-rollerized Comp Pro Magnum rockers, self-aligning. They have just recently been released (finally). These are lifetime rockers, since they can be rebuilt with standard RBC roller bearing units.

You're right. You should use the rockers with "lips" or install guide plates. If your cam grind is a little more aggresive than stock, it is probably a good idea to at least install screwed rocker studs. Once this is done, guide plates are easily installed, but can change the valve train geometry to the point where you might need custom push rods. They also take up precious space uncer the center bolt covers.

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Later,
Vader
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"Make Me Bad"
Adobe Acrobat Reader 4.0

 

Thanks again Vader, I dont really have the money for the rockers, I read your earlier post about the ultimate rocker arms which is when I realized I had the wrong stuff. too bad for me.