If you want pictures and more explanation search 'roller cam borntoloze' here on the hamb. The stepped lifter bores worked fine with a flat tappet but did not work with the roller lifters (I found this out after assembling the engine and running it on a run stand). all of the roller cam stuff DID fit on the engine BUT the lifter bores (for no apparent reason) were 'stepped' (from the factory) and therefore exposed the oiling passages of the roller lifter. Seems the magazine was correct after all. I then pulled the timing chain and sure enough, there was the machined area for the cam retention plate and the drilled holes to go with it just like the magazine said. I had a 1987 Monte SS engine on a stand, pulled the intake and sure enough, there were 'stumps' or 'bosses' that the magazine described to allow the mounting of the 'spider'. I read in a magazine that all engines from 87 and later that aren't roller from the factory (they came flat tappet) will accept the factory roller stuff. Runs great (on my test stand at least).īe careful. Tossed the TBI and installed the factory intake from a 1987 Monte SS and quadrajet. I then removed all of the roller cam stuff from a 1992 Buick Roadmaster (wrecking yard) and installed them in my 95 block. non-roller but has all the bosses and machined surfaces and drilled and tapped holes to accept all of the factory roller cam stuff (spider, cam retention plate). Anything you can offer would be appreciated. So far I got I should look for one from a big chevy cars '87 or later, trucks sometime in the 90's. Any way to tell externally if it is? Casting numbers or marks, tpi, tbi, whatever. What if I'm looking at a complete engine sitting on some guys garage floor thats allegedly a roller. Any idea on what they would be? Which ones to avoid? Which ones have a lobe for the fuel pump? How about the factory cams? I'm guessing GM made a real nice roller cam that would work fine with a basically stock old truck. Any guidelines, year ranges? Trying to keep the engine looking stock. fuel pump boss that is also drilled for the pushrod? So far I got it either has it or not. It gets used alot unlike our really old cars that are frequently inoperative.īeen trying to research roller blocks on the internets for months, doesn't seem to be a lot of solid info out there. Not that HAMB-y, I know, but I want to take advantage of the newer tech with my parts-chaser, family hauler '70 K10 suburban.

Roller cam for tbi 350