So, for Project Regress, one thing that has been on the back burner for its engine is the cam. At present, the resident cam and associated components are factory stock, and the plan was to get the engine running well before tinkering with its innards. That said, I do happen to have an Isky 256H flat tappet cam and related geometry sitting on Indian work bench #2 and the plan had been to do a cam swap. The 256H is not a high lift cam, if fact it falls into the RV category, it is about torque for low end acceleration and the one currently resident in my Van works and works well. It does like to sneak up on you around 35-40 and surprise you by coming on at that point. Around town you have to be careful as it will easily put you over the speed limit without too much rpm needed to do so.
The problem here is that lifters for flat tappet cams have been getting a very bad rap for some time in the quality control department. The lifters that I have came as part of the package that I ordered and they predate the chinesium versions that do so love to fail, but...........
What I am now considering is a roller version of the 256H. I have paid a visit to the Isky site but did not see anything that seemed to match what the 256 has for specs. This is not a race cam I am looking for here and it seems that Isky equates rollers with racing, understandably I suppose. The biggest benefit to the 256 was that it could be slipped into place without worrying about valve springs or shims or valves hitting piston tops. This cam is about duration, not lift. And that would be one of the primary requirements for any roller cam that I would elect to acquire. Think of what I want as being a highway cam with ability to step out and readily deal with the Susie slowpokes that seem to pop up out of nowhere on the Interstates.
Any thoughts, ah , oh yeah, American Made and never to see the asphalt of a drag strip.
Nick
The problem here is that lifters for flat tappet cams have been getting a very bad rap for some time in the quality control department. The lifters that I have came as part of the package that I ordered and they predate the chinesium versions that do so love to fail, but...........
What I am now considering is a roller version of the 256H. I have paid a visit to the Isky site but did not see anything that seemed to match what the 256 has for specs. This is not a race cam I am looking for here and it seems that Isky equates rollers with racing, understandably I suppose. The biggest benefit to the 256 was that it could be slipped into place without worrying about valve springs or shims or valves hitting piston tops. This cam is about duration, not lift. And that would be one of the primary requirements for any roller cam that I would elect to acquire. Think of what I want as being a highway cam with ability to step out and readily deal with the Susie slowpokes that seem to pop up out of nowhere on the Interstates.
Any thoughts, ah , oh yeah, American Made and never to see the asphalt of a drag strip.
Nick