Would like to get some roller rockers...need suggestions

[kickinasphalt]

Just got a new Edelbrock intake carb and already have headers so I was thinking of getting some roller rockers as my next engine mod. I don't want to spend lots of money (around $200 would be nice) but I don't want pieces of junk either. Any suggestions????? Thanks!

[70c10]

Harland Sharpe and Crane energizers are both under $200.

[MylilBowTie]

Dont forget Hardend pushrods and possibley guideplates, screwin studs.

[kickinasphalt]

Not for sure if I have screw in studs or not (didn't build the motor but I will check) but was is the advantage of screw in studs? Why do I need guideplates? Thanks.

[gldevall]

Check out the scorpion roller rockers. The look pretty good, plus they say they are rebuildable....not sure what that means though. They go about $250.

[MylilBowTie]

There are self-aligning rockers and non self-aligning rockers. The non aligning rockers use guideplates to keep the rocker alined on the valve stem tip properly. Im not real sure of the pros and cons to the self-alinging rockers so I can say to much about those.

I do know that if you use guideplates that you will have to install hardened pushrods. This is because the guideplate will wear into non hardened push rods making the weak. Screw-in studs are nice to have, but like everything it depends on application and intended use. If the engine has a high lift cam and high seat pressure springs there is a lot of tension there. The stock studs are just pressed in and with a setup like that it can pull the studs out of the head. That's where the screw in studs come into play. You dont have to have a "race engine" to have screw in studs but I like them for piece of mind.

This will help some http://www.worldcastings.com/tech/sr...stironhead.doc and http://www.worldcastings.com/tech/va...djustments.doc

I like comp cams rockers but thats just me.

[TwinTurbo]

It depends on what head you have, if you have heads with those small slots for the pushrods you can not use self aligning rockers, just use the normal ones...guideplates not even needed. To run guideplates you need screw in studs. If you have heads with large holes for the pushrods and press in studs then you want to get the self aligning ones. If you use those plastic guideplates you won't need hardened pushrods

[NeCrOmAnCeR]

For a nearly stock lift cam (one which would not require special springs) you can run a 1.5:1 roller rocker without screw-in studs or guide plates. Stock cylinder heads for pre-vortec engines have push rod guides cast in. These work with non-alligning rockers to keep them centered. To use guide plates you must have the head machined for them and screw in studs, in doing this the machine shop will also drill out the stock push rod guides, to prevent binding of the pushrod against the stock and bolted on guideplate. For 1.6:1 rockers the pushrod slot in the head will need to be elongated, and their are special tools to do this which can be baught through jegs, Summit ect..