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Tech Question
Rick Blose, Jamestown, NY, 1965, Plymouth, Belvedere, 383
My Belvedere has a '66 383 in it and the cam went bad. I have a new 1970 440 crane cam kit I'd like to put in it but I was told I'd have to buy new lifters because they're different in '67 and older 383s. Is this true?
First of all, although your phrase "cam and kit" makes me think that you probably have this covered, let me just reiterate: A new camshaft must always be accompanied by new lifters.
The basic answer to your question is: Yes. The lifter and pushrod design changed in 1968 (and remained unchanged until the B-engine's 1978 demise) with the oddball exception of the low-taper 440-6 cams. The '67-down pushrods had a smaller bottom tip, and the lifters had a correspondingly smaller receptacle.
The clear choice, however, is to retain the kit's '68-up lifters and simply get a set of the "new" design pushrods. Lifters usually cost at least as much as pushrods, anyway, and by doing this you'll be making a worthwhile upgrade at little of no added cost.
Rick
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