I hadn't even thought about it until after the order was placed. In a 396, are restrictors needed when running a flat tappet cam? XS282, "regular" solid flat tappets (decided not to spend the $'s on direct lube type), Melling HV pump (okay, I know, but that was put on during the rebuild back in 1997 after the stock pump couldn't keep up and wiped out all the bearings).

Last time I had a solid cam was a hybrid 302 (327 block & 283 crank) in the early 70's, was built with lifters that supposedly limited flow to the top end.

 

No, not needed.

I don't know if you can still get those "edge orifice" lifters. Those would be good, though, if you have roller rockers; those don't need as much oil as ball ones.

 

Of the few Mk IVs I've played with, they all seemed to like to eat lifters. It would seem that anything that would improve cam/lifter lubrication or reduce friction there would be a good thing. I realize you are asking about rocker/valve lubrication, but I'd be very tempted to go roller. That's just me. I'm almost positive the "Emperor of the Ottoman" has been in one or two more BBCs than I have.

 

I could have gone roller, but the solid rollers I saw off-the-shelf were pretty radical pieces. Plus, the cost delta is very, very significant.

 

one other thing that helps out a little on a bbc is running the valve lash about .002" looser than Comp recommends,this helps with the lobe wiping problem that their known for.

 

The two types of solid lifters used on chevy motors are
Edge orifice - reduced oil flow to the rockers.

and Piddle Valve - same (metered) oil flow to rockers as stock hyd lifters.

The Edge orifice type were used on the SB Z28 motors especially with the high rpm solid "off road" racing cams of the day.
Help keep excessive oil out of the heads for sustained high rpm road racing.

The Piddle valve type were used in everything else.
BB and SB high perf ( W/solid cams)

I'd just use the piddle valve type for your motor as you won't be reving it that high (relativily) and only for a few seconds at a time
(drag racing) Crane and Comps standard solid lifters are the piddle valve type.

The piddle valve type are best for daily driving and dual purpose S/S use.

Do not use any type is oil restrictors in the oil galleries. It's not nessessary for your purposes.
You need the "stock" oil flow at idle and low cruising speed for long cam lifter life on a street/ strip motor.
If you were just drag racing with a much higher rpm cam or just road racing or for circle track where the motor sees very limited idleing then the edge orifice type would be best.