1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 HYDRAULIC TAPPET

Part Number: 91-846

HYDRAULIC TAPPET - Part Number 91-846
This amazing new tappt has broken the barriers of previous tappet designs. This tappet performs like a hydraulic tappet from start-up to about 5500 rpm, and then turns into a solid from 5600 rpm to your set rev limiter. At the same time it becomes a solid, it also adds about 3-6 more useable horsepower. Hydrosolids have a built-in anti-pump device. What this means is that about the time your springs start to surge and go into harmonic distortion, and the tappet rollers start lofting off the back side of the cam, you can be at ease knowing that your new Jims Hydrosolid tappet will not pump up and allow your valves to hit each other.
Jims big axle hydrosolid std o.d. .8425" 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974

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