hydraulic roller valvetrain for HP street??

[84_GT350]

Personally, that sounds like total crap to me. Roller cams can make more power than a flat tappet due to running much more aggressive lift ramps. Sure, you could run the same specs on a flat tappet cam but the friction between the cam and lifters would wear them both out pretty quick (not to mention having to adjust your valvetrain constantly). If you have some time, compare the Comp Cams Xtreme Energy flat tappet grinds to the roller grinds. More lift and less duration from the roller cams which equals out to better vacuum and throttle response. But like the man said...the final decision is yours.

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s