Either way, I want a roller this time and a higher lift than my last solid flat tappet, that's why I'm researching.
Years ago, in the 80's pro street days, everybody had a solid roller cam, but many guys were having trouble with the very high lift cams, high spring psi, and the lifters would crack, split and send all those cute little bearings destroy the engine. Today I spoke with ''Bam'' at BAM Roller Lifters after a referral. He said that getting quality metals, properly heat treatment and some grinders, have been hard to get in the last 10-15 years.
Getting a happy medium between too hard of case carbon steel through out the product, in this case a camshaft, can get too brittle or too soft.
Since we raced sprint cars, he said they sponsor a 410ci team and the engine builders want 9310 cores and/or ''tool steel'' for the cams. One of the sprints engine builder said he had 800 runs on the dyno using his lifter, which was the bronze bushed and about the same with their steel/diamond lifter. Realistic, who knows ?
He mentioned that he thinks,...that company's like Comp, Jones and Callies order their cores and machine their cams, and maybe lifters.
So, do we only and trust the high dollar company's for our cam & drive train parts ?
I also, would never trust low buck products from eBay and other cheap internet crap. I'm just questioning that just because it's a high dollar product, doesn't mean it's high quality, but the same for lower cost products. Maybe the high cost from a company sells 100 cams a year, but the lower cost company sells 1,000 a year, and are the exact same core.
I know I'll buy the cam and lifters from one of the company's that I listed, but which one
Are all of them trust worthy ?
I had a guy say that some years ago, either his cam broke first or a lifter, so he called the cam and lifter company's, and typical, they blamed each other. It could have been that the installer did not set it all up properly, but let's say he did.
With a lot of you having long time experience's, which manufacture do you buy from, and why ?