Cam Choice

[Steeveedee]

Looks like I'm going to have to rebuild the 402 in my '70 truck. It needs valve guide work for certain. I haven't checked compression yet, as my hands haven't recovered enough from the surgeries (carpal tunnel) to do it. I'm just doing a little groundwork ahead of the fun. It's been punched out once, but I won't know how much until I pull a head and mike the block. I'm hoping for one more bore.

In any event, I'm thinking roller cam instead of flat tappet, to get away from worrying about oil. So, does a roller cam yield more HP for the same grind? Seems like reduced friction would make some small difference. My application is towing a 6k pound travel trailer, so I don't want anything rumpty, I need low end torque, not high revs. If there is an insignificant gain (for the money), I'll just stick with flat tappet.

Any thoughts?