Jeff, SHORT ANS: The pro builder says its kosher to do so. (MJ) See the recent thread on Alan's refresh. SHOULDNTBEHERE or something like that.
Yup, plan on doing same, solid rollers on an Isky HR. Deemed kosher by the builder. More of a durability issue, and we get a few hundred more revs out of the springs. Oh, and MOSTLY, I seek a 1967 375hp style idle, relatively mellow, good vacuum, and a screw machine shop hummin'. The gentle delicate sound of solids, not the more nasty clackity-clak of ill running hyds. Well, today's HYDs. I do get that the ramps on a HYD cam are ground different than a solid. Adds to durability I'd guess, even with the wrong lifter. Harold Brookshire explained to me how the take up ramps on a hyd are slightly longer. Hence in part the 8 though diff in durations bet H and S cams.
Durability: This engine is getting stamped with Old Red's VIN, so durability is paramount. Its PERMANENTLY in this car. ( I'll LS the next Chevelle I buy, a rat rod!
TOTAL Blasphemie! )
Plus, with any roller valvetrain on street duty ( to include 5-8 hour highway runs), I should think that pulling valve covers for visual inspection is de riguer on a set schedule, so why not check lash? PS, the SFT in the old 427 buzzes above 7 all the time. The ONLY time I had to set lash in the LAST FEW YEARS was when the clutch 'stuck' during a spirited jaunt in 20 degree temps, and she must have buzzed well past 8. No float, sounded prefect harmonically. ( sweet ass actually!) Must've stressed a pushrod or trunion some though. Maybe a valve bounced, but I didnt hear it . ( only the BANG! when the clutch finally unstuck and dropped!) Isky 8005-a springs and Ti retainers. I'll ask for Ti retainers on the MJ special as well. I'd think the springs are a bit stiffer then the 8005a is all. Not 500+ on the nose. 420 or so.
I'll pull the intake to swap 1X4 to 3X2 once in a while, which gives the opp for a "deeper" look see as well.
So,,, "normal" maintenance with a roller cam in a rat, to me anyway. They arent "fire and forget", HYD or solid imho. And if Alan can run around the country in his Corvette running that setup ( runs th ebigger 238 cam) , I can do the same in my Chevelle - DARN IT!
PS: a funny story : my first Chevelleabration, 2004 I think, BLT4FN asks me to set his lash , as it seems loud. On the show field. Well, Shaun is partially deaf. When I heard the racket I was STUNNED he drove from Canada that way! I tried not to alarm him, but set on my task. Well, lo and behold, come to find out through an interrogation with a deaf man, I am setting lash on HYD cam. With solid lifters. Through trial and error ( 2+ hrs on the show field and ruined my show shirt), I get lash down to 2 thou, where i think it sounds acceptable. Ran fine. All the way back to Canada, and another few years that way.
Holy dumb friggin' luck Batman!
and, it works, even inadvertently.
So I gots some experience, the old fashioned way by effing something up - almost.