red,
Sounds like lifter problems. Cam probably ok but you will need new lifters. Vanir has good price on a set it seems.
Cams are avail from Comp Cams, Cam Craft, Vanir Performance.
I have been in the process of doing exactly what you propose(since Jan actually- moving really slow due to work, school, family etc etc.)
Cam from Comp Cams 410-8 is a mild upgrade add 15hp and 18ft/lbs, moves the power band up about 400rpm. You need to use longer pushrods with the new cam and the length will depend on whether the heads and/or block have been milled.
It uses the stock roller lifters, and the stock springs can be used if they check out. costs $230-$280 (its a roller cam you know!)
Check the rocker arms and shafts while your at it. I am replacing the shafts and rockers, timing chain and gears, tensioners. No skimping- Im not taking this engine out again in a few months
Hope that helps some
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Steve VB
91 Navajo
2 1/2" Rancho,
31" Goodyear AT/S
