We run up at sauble and we both have roller rockers and the MSD ignition, MSD ignition was a great in my eyes and most guys at sauble no they did not go for the rev boxes for the simple fact that because we have alot of ford guys the stock HEI distributor did not cut it, Dunno exactley just saying. I think to keep a tamper on these crates from everyone blowng the field away with these so called "Stock crates" is to put a rev chip rule in them how guysat sunset and other tracks can rev them up to 6800 with out them scattering is beyond me simply cause there not stock, people are sliding cams out  porting  the heads and then acid washing them the whole nine yards You can take a stock crate open it up reseal it and make 380 hp easy and stay within the rules, have we looked into it sure we have why cause you can't keep up with alot of these crates coming out of the walter, baker or watson camp. Throw a chip rule in take some of that rpm away and if youu wanna throw roller rockers on them then there now considered a built motor cause like you say alot of guys run crates and just get waved through tech when alot of the built guys are getting tore down. Roller rockers alot of our guys wanted it for the simple fact of reliabilty because guys were spinning builts up to 7500 plus rpm spending major money on motors and hanging rods whatever, The same year they gave us rollers they also gave msd boxes with chip rule of 6400 on crates and 7100 on builts most guys are revving around 7 but there is that few going overboard. If sunset dont go rollers and msd and just penalize the guys on invitaionals that do have them with weight your just going to push the travelling guys away. JMO

careful there, that might be classified and unsubstantiated information. maybe i will have to buy one of those magic crates, you know the one that says maximum rpm 5500 but has no problem going to 6800, and 355 hp with a four barrel but makes more than that with a two barrel. i did find a website out of new hampshire that sells a crate short block with a 44 pound crank, 6 inch rods and lightweight race pistons for 2700. and then buy a set of brezinski crate heads for 1500. and they will match up a cheater crate cam to work with that package , and they already have shipped a few of these into ontario. no, i would rather just use my built motor , that way if someone thinks it is illegal at least it can be tore down.

Crate Motors are strong out of the box. They simply become more reliable with roller rockers.

As soon as you had improved valve springs, you'll definitely get more out of it (RPM) and perhaps burn it up a little quicker (two seasons instead of three, or if you're really tempting fate, you'll get one hard season out of the motor with potential to break a timing chain).

If you're allowed in your rules to replace the timing chain with a double roller, the motor is a rocketship and plenty strong for tracks the size of Sunset, Peterborough, right up to Mosport if you add the rollers and valve springs.

The only thing left to limit its ability, would be a gear ratio or rev-limiter.

But good luck with that....(there's so many ways around a rev-limiter its not even funny)

Even with all this talk about new pieces, the fastest way around a short track is setup... that's still the number one thing that wins races. What a lot of us probably don't want to hear, myself included is that we have a long way to go learning how to set up a race car.

6800 RPM with cast/hyperutectic pistons? wow pritty brave.

Teams race the crate with good results - so it's hard to argue. As I said earlier, you could blow up 3 of these things and still be half the cost of a built motor...

Hyper-cast pistons have come a long way since they first came onto the market. They maintain tolerances at higher temperatures than older versions, along with improved skirt design offers increased RPM capability.