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Ratio in stock is 1.5.

Special order ratios are available and are as follows: 1.55, 1.6, 1.65 Specify at time of ordering. Allow 2 weeks for your special order to go out.

Roller rocker arm assemblies were originally developed for the Datsun roadster in the mid to late 1980's into the 90's by Datsun engine guru Dave Weber, now deceased, at Malvern racing. They were manufactured and developed by JB racing in Florida and were offered in different rocker arm ratios. The ones supplied here were not the first roller rockers available in the world, but are of the highest quality available.

These fully assembled roller rocker arm assemblies first appeared in the late 90's from Rocker Arm Rebuilders of Torrance.

"Aluminum, machined not extruded, 2024 cold finish LH and RH roller rocker arms. Rocker arms are bushed with 660 bronze bushings and are assembled onto a ground and hard chrome plated shaft.

 Easy Allen key adjustment for valve lash on twelve point locking nuts".

NOTE: These can be use on the early 1500 and 1600 engines. It requires you to ream out the pedestal holes .045

NOTE: CORE CHARGE EXCHANGE REQUIRED INCLUDED IN PRICE

30 DAY CORE RETURN POLICY. AFTER 60 DAYS GOOD CORES RETURNED TO US , IN HOUSE CREDIT TOWARDS PARTS, NO REFUNDS TO THE CREDIT CARD!