With all the changes in manufactures and brand names I am utterly confused on what brand of rockets to use. Any thoughts on the combination of rockers springs and push rods I should be using on my 88 Corvette L98 with 113 heads? I am looking for a set of 1.6 roller rockers but have no idea on the brand to go with. Thanks for the help.

 

I am not an X-pert on the rocker's or springs but ,I know what worked for me after trying 2-3 different sets that didn't work ,springs the same I tried the ( these will work on any Chevy small block) NO they won't I went with the (Alex's Parts) springs these are custom made for your motor TX. speed harden push rods stock length ones .. The rockers been in two years in have checked them still adjusted just like the day installed .. Pic of off the shelf, Thes work on any small block RIGHT .. Not an X-pert just what worked for my 93 LT-1

 

I changed the springs without taking off the heads the old school rope in the spark deal was kinda easy kinda not, but it worked .. I think way better that removing the heads, I can' stand coolant everywere .. Just me .

 

You can install these with your OEM pushrods and springs. You'll need to cut the drip tabs off the underside of the valve covers. A Dremel with a small cutoff wheel works well for that.

 

Yes, only need the rockers don't need anything else, just install set valves drive.

 

Tip for the roller rocker install. Submerge completely in motor oil at least over night before installing them. The goal with this is to ensure oil has a chance to completely penetrate the assemblies and lubricate all the needle bearings before the first startup.

 

Did you use just a set of Roller Tipped Rockers? The second pic???

 

No, I had installed a new set of (these springs will work on any small block NOT) After the things started breaking I removed spring rockers started over. the Crane rockers I here work fine cheaper than the one's I have installed, not wanting to take any chances, I removed the rockers put springs in the can sold the rockers to another LT-1 owner I never heard back guessing they worked OK .. I understand they work.

 

My engine has CC Ultra Golds, Summit 19005-16

 

I used the same Scorpion narrow body as above, they are designed for the centerbolt heads. Just keep in mind they are available self aligning or non-self aligning, the latter needs hardened pushrods and guide plates as those would align, and stock rods/plates are not hardened.

 

Just a comment in case it wasn't clear... the post that @radar502 made shows a good example of two sets of different kinds of "roller rockers."

There's "Roller Fulcrum" rockers, which are the ones in blue. These have a true roller (with needle bearings) on the rocker stud, as well as roller tips. They produce less friction overall on both the stud guide and the top of the valve stem. They also have a higher ratio of 1.6:1 instead of the stamped 1.5:1. This may require some modification for clearance under the valve cover because they are bigger.

Then there's "Roller Tipped" rocker arms, which are the Crane Cam roller rockers in his second picture. This are also 1.6:1 roller rockers (higher than the 1.5:1) stock, but have standard rocker arm pivots. Even still, the fulcrum action is improved because the rocker pivot washer has groves that allow oil to more easily penetrate down into it, and thus they still provide less friction there beyond the stock rocker arms. And of course, they also


You gain improvements in three ways:
- Reduced friction which results in a little less heat and a little less resistance on the upper assembly. I've seen dyno results of a 2-3 horsepower increase on the crane roller fulcrum rocker arms on an SBC with the 1.52:1 ratio.
- Increased lift and slightly longer duration as a result of the higher ratio of 1.5:1 (stock) to 1.6:1 from both of those. You can expect about ~10+ horsepower.
- Reduced lifter and valve clatter sound... so when the engine bay is open, you hear more of the good stuff and less of the bad stuff.

Personally, I usually go with the Crane Cams rolled tipped rocker arms on pretty much every car I own... just because they're inexpensive and direct replacement (requiring absolutely no modification to anything, whatsoever). Keep in mind, you will need to re-set the valve lash for everything. When I install them, I usually use a bit of engine assembly lube on the rocker arms after installing them.

 

Do you need any other modifications on the 113 alloy heads to run the roller top rockers or just bolt them on?

fhanks.

 

You mean for the roller TIPPED rocker arms?

No, from the second picture (Comp Cams, sorry, not Crane Cames), they require no modifications whatsoever. They literally just replace the existing rocker arms. It's pretty great. I install them on everything I own that's pushrod.