Where do Sealed motors run?

[Stephen & Horace Johnson]

Nmra coyote stock. Very good class

[Dick Butler]

Thanks, I will look up their schedule and rules...

[Tom Meyer]

IMCA dirt track uses a sealed 350/355hp motors in hobbystock and sportmod classes or what they call a 602 crate. They come from GM with twistoff head, intake, oil pan and timming cover bolts. They also have cable ties on other bolts that make them IMCA legal. They also use a 604 in the A mods. But like everything else it who you know there are many enhanced motors out there. Tom

[Rick Leininger Jr.]

Originally Posted by Tom Meyer

IMCA dirt track uses a sealed 350/355hp motors in hobbystock and sportmod classes or what they call a 602 crate. They come from GM with twistoff head, intake, oil pan and timming cover bolts. They also have cable ties on other bolts that make them IMCA legal. They also use a 604 in the A mods. But like everything else it who you know there are many enhanced motors out there. Tom

Yes, the enhanced 604 crate motors out there make about 60hp more than the best tuned factory GM 604 crate motors, the twist off GM 604 bolts aren't hard to find.

[Alan Roehrich]

Yeah, "sealed" motors ain't sealed. I've heard some of them that sounded like high compression small block Chevy Super Stock engines, and even Modified class engines. Those usually were considerably faster on a 5/8 mile track than the engines I knew had been tuned and tweaked, but not opened up.

[Tim H]

One of the guys I know well runs a dirt class with a "sealed" crate 602. They all seem to have been "enhanced." Brezinski and others offer a number of cheater parts. There are suppliers selling replacement sealed bolts etc and a couple of builders have perfected methods of cheating. The local tech inspection is rather loose and fuel is also a potential cheat. (oxygenated and methanol).

[Dick Butler]

Thanks for the information about the cheating possibilities. Sounds like NHRA doesn't need anything like that. Another can of worms..
Coyote class runs the 525 motor which is the Drag race version. Seems like a more open motor class would be easier to control...

[Stewart Way]

Dick
As one Grandpa to another, take this as it is meant, humor. My 8 year old grandson corrects me every time I call an engine a motor. "Grandpa, a motor is electric, an engine is gas". With that in mind I was going to post earlier that they use sealed motors at the local slot car track but some folks get upset about anything so I held of but what the heck. Really, by definition, motor is correct for both but I let him correct me anyway.