Well, I upgraded to LT4 valvespings in my L98 motor with the 113 D-port heads. Now I want to get roller rockers but am on a budget.

Here's what they must include:

1.) 1.6 ratio
2.) full roller (needle bearing fulcrum or whatever its called)
3.) any material
4.) under 300, prefferably under 250$
5.) has to be self-aligning (can't afford hardened pushrods and guideplates)

So, what's out there?

-dave

 

I have used 2 sets of the crane narrow body type. They have held up well, fit well, (centerbolt valve covers) and were 300 clams. My 1.5 ratio set has over 100k and are hangin in there.

 

Do I need self-aligning ones and are they?

 

They sell both types and the price was the same for aligning or non aligning. Check Jegs or Summit catalog. A year or so ago the price was $299. Hopefully it hasn't gone up.

 

Can you use the stock push rods with 1.6RR's and a stock cam?

 

Usually ,yes. But check them when you install. Only takes a few minutes to roll the motor over and watch the pushrod. It needs to stay in the middle 1/3 of the valve tip through out the sweep.

 

I use scorpion brand 1.6 roller rockers with 7/16" stud. They sell for 225 dollars...

 

GM LT4 rockers (OEM'd by Crane evidently) run ~$280 thru Dal at Vandevere Olds and most other cool GM dealers who sell at wholesale price.

They're 1.6:1 ratio, self aligning, narrow body so they'll clear centerbolt valve covers. They held up to three years of road course, drags, and street use on my car running same heads and springs as you listed and a GM HOT cam.

Here's the description from the GM catalog:

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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.

 

Comp Cams Pro Magnum Roller Rockers...NSA (if your heads call for them), lighter than most alumnium rockers and are made of steel so they hold up much better. alumnium rockers arent usually recommended for the street. for every success story of alumnium rockers that have held up on the street there is one of premature failure.

oh sorry they make either 1.52 or 1.6 ratio and run about $270.

 

Check out the Comp Pro mags I have for sale in the classifieds.