Quote:
Originally Posted by mike76
Again... the original question... Why would one run solids on a hydraulic roller if a set of hyd. lifters will give me more vs the solids(10-12*). I've read here that is the "rule of thumb". What am I missing? Am thinking that the hyd. lifters will give me enough rpm w/o the ultra stiff springs needed for the solid stuff.
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Because without exotic valvetrain components (PDude solution), hyd rollers are going to have ishues above 5800 or so rpm(float, pumpup). You're going to need valvetrain stability more like 6800+ rpm to reach your goals. This puts you square in solid lifter territory. And without having to regularly inspect your lifters i would recomend bushings for the street.
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'78 Macho T/A DKM#95, 460cid, SRP pistons, KRE 310 D ports,
3" pypes, Hooker 1 3/4" headers, hydraulic roller,
10" Continental, 3.42 gears
11.5 @117.5mph 3900lbs 
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