Not compatible with cast or steel gears without similar surface treatments. Warning: Camshaft Optimized for use with a Melanized or Nitrided distributor gear. XFI 202/212 Hydraulic Roller Cam for Chevrolet Small Block 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. This product is not CARB Legal and not for sale in Californiaįits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Resources Installation Instructions Resources Installation Instructions 474/.510) than your heads and tune will handle.Good for 305 or 350 TBI. My guess is that the ZZ4, while a really good cam (used a couple of 'em) for appropriate use, just might be a bit more &. 040 over 305 block) with L98 aluminum heads. My brother needed one and I'm planning to use the other in a 336 (3.75 stroked. I bought two of 'em a few years ago just because they were cheap (for hr cams) at $140 for the pair shipped, off of ebay back when guys were replacing them in Ramjet and HT383 crate motors with stupid thumpy cams. Haven't used one myself yet, but everything I've read about it (and that is LOTS) makes me think it is something you ought to look in to, if you want good low to mid rpm grunt.
Moderate lift and duration is supposed to wake up the stock 350 and still play nice with your oe heads and tune. For what my 1 cent is worth I think the cam you are looking for is the GM "Ramjet" p/n 14097395 cam.
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