3400 Roller Rocker Arms

[Impetuousracer]

I noticed the Crane Gold took some modification to make work. What are some good roller rockers that are a direct fit besides Mantaparts "Sports" set? 00 3400 V6

[AaronGTR]

I don't even know of anyone who has the mantapart ones (if they actually exist). As for others, I'm not sure of the specs, but what you need to find out is what other years of engines used the 3400 rockers, or what rockers are made for an older engine that used the same cylinder head design, and cross reference them. Chances are they will work, but may still need some modifications to fit (just like the crane's, but may be easier or harder) since no one makes a direct bolt on replacement meant for the 3400. Really the 3400 roller rockers aren't that bad a design. That's why so many people upgrade to the 3400 top end as a cost effective performance mod.