I run a plain old solid flat tappet cam. With poly locks lash adjustments are not a problem. I think the advantages of roller setups are marginal and often exaggerated while there are also disadvantages. For one, a roller lifter is a heavy mutha compared to a solid flat tappet. I've also heard several horror stories at my track where a roller lifter wedged itself into the bore sideways and wiped out the whole motor. Obviously this was when running roller lifters in non-roller blocks. Although there may be a lot of people doing this and its working fine I won't do it. A non-roller block will also limit you as to what roller cams you can run.

The distinct advantage a roller is said to have is that the cam lobe profile can be made to hold the valve open longer near max lift. It does this by having a steeper valve lift ramp and a flatter cam lobe at the tip. This widens the torque band of the motor some and also enables you to run more duration while the cam will have a tamer idle. You can also run a bit less lift and still get the flow you want.

That is all worth something but it wasn't worth the extra cost of a solid roller cam and lifters to me. I also don't have a roller block so it was kind of moot.







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