The rear shown is a smaller V8-size rear, which uses 6-spline gears. The Late Models run our bigger 10-inch rears with 10-spline gears.

They want costs to go up to make the sport less attractive

The reason is at the bottom is for lubrication.

No, for racing applications you will need to run straight-cut gears. The helical gears are really just to reduce the amount of audible whine from the gears in street cars.

@@wintersperformanceproducts I see. Appreciate the prompt response.

Not a stupid question at all-and yes, these have been used front and rear in AWD cars quite successfully!

@@wintersperformanceproducts Okay, that's pretty cool.

This particular quick change is designed for Sprint cars. For a Corvette you'd be looking at one of our 10" Champ Independent rears. Through working with Drift racers to develop the strongest QC available for those high HP applications, we've beefed up our castings, introduced heavy duty spool and output flange options, strengthened the standard heat-treated steel lower shaft, etc. In terms of maraging steel, we do have a Vascomax lower shaft that's as close to bulletproof as you'll find. Our video "independent quick change options for Drift cars" should answer some of your questions. There are many Vette owners (track cars and street cars) running that QC-putting huge amounts of HP, banging gears, shocking the drivetrain-without any problems. If you're interested in talking specifics about your car, give us a call-we'll build you a rear that can take whatever you dish out.

That's awesome! Glad you're getting good use out of them.

The rule of thumb is: • V8 size (8-3/8" ring & pinion), the rear shown in this video, is rated to 600hp • Champ (10" r&p) is rated to 1,000hp • Champ HD (or a Champ equipped with some of the available heavy duty options, like a heavy duty lower shaft) is rated for over 1,000hp But as you said things like slicks, trans brakes, how much the car weighs, etc. all play a role. If you're running a '32 Ford with 550hp, a T5 and pie crust slicks, a V8 rear will likely be just fine. If you're running a '68 Camaro big tire car with 550hp and a trans brake, you're going to want a Champ or Champ HD rear even though you're under 600hp. Every rear is built to order. If you've got a specific application in mind, give us a call or shoot us an email and we can get all your details and build you a rear that will live.

Which assembly are you referring to? We're happy to post tech videos for requested info.

Sorry, I should have specified. What I am interested in is the drive train disconnect on a sprint car. How does your mechanism to disengage or put out of gearwork.

You're referring to the shifter block. Yes, we can certainly do a quick video explaining how that works. Stay tuned and we'll put one together-we'll tag you when it's posted (in the meantime you can also check out our video on Sprint rear assembly...doesn't address your specific question, but you might find it interesting).

You're welcome any time.

He came from money too but he is a good dude

It depends on horsepower/torque, tire selection, and how heavy your right foot is, but the general rule of thumb is our V8 quick change is rated for about 600hp and the bigger Champ rear is rated to about 1,000hp. Let us know if we can answer any questions!