retro fit roller cam for 383

is this correct for standard blocks,and need no machine shop work done? how about cam bearings i have seen some for roller cams,can standard bearings be used for the cam?thanks

I had Comp grind up a hydraulic roller for my 70 383 block recently. Didn't do anything extra to the block and used a standard Durabond cam bearing set. I chose the Johnson retro-fit lifters as I was able to control the lifter to bore clearance better. Put the engine on the dyno just to make sure no leaks and felt everything was good. No oil pressure issues, good idle and vaccuum so I'm happy. Good luck with your combo.

how are those johnson's for after run rattle ? that nothing but rattler issues on a flat tappet hyd , lifter were relaxing back . and would rattle up in to oil pressure . i'm currently involved in a stock hp 440 build , and i'm leaning towards roller hyd for it . would like any feed back your can give .

POMONAMISSEL said:

how are those johnson's for after run rattle ? that nothing but rattler issues on a flat tappet hyd , lifter were relaxing back . and would rattle up in to oil pressure . i'm currently involved in a stock hp 440 build , and i'm leaning towards roller hyd for it . would like any feed back your can give .

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If your asking how noisy they are, I didn't notice excessive valvetrain noise like some other stuff I do. The engine did have the stock manifolds on and about 18 inches of pipe going into the dyno 6 inch flex pipes. That headpipe to flex connection was not sealed so it wasn't the quietest in the room to give you a real good answer. I've used them on other street rod and marine engines with no complaints in the past. They are hundreds more than other street performance retro-fit sets, such as a Comp or the cheaper Morels I believe. Can't remember if I used their standard or reduced travel lifter unless I looked at my paperwork at the shop.