i broke 8 teeth on my 8 3/4 last friday at dragstrip on launch.decided to pull the tranny and check the sprag,sure enough it cracked the case in 2 spots and collapsed the wave springs,it was a bolt in stock style sprag.valvebody is a reverse pattern low band apply style.

You did the proper thing When in doubt, always check it out

That's what made me go dana. I didn't mind the maintenance on the 8&3/4 but when it took the trans out I stopped seeing the banjo as neet.

One of the few occasions I fixed a problem before it became a problem.

Could have gone A833 instead, and never have to worry about sprags again

sticks are for popsicles....

I'll never give up my pushbuttons!!!!!!!!!!

thats funny because im buiding a dana 60 also

do u guys use bolt in sprags or just the one that is pressed in the case stock.im wondering because the bolt in one i used cracked the case,because it couldnt spin the outer piece,it spun everything in the center though.let here opinions on this

the two race cars I've had both have run the stock sprag.

The picture i posted in your other thread was of a stock sprag. It also cracked the case.

I had a stock sprag do the same. They are in there nice and tight.

Super Sprag and the like have higher holding force.

Super sprag is an upgrade, more rollers. Though Idid see one bust last year when a rear end broke. The stock style bolt in piece is no better than a stocker in my opinion
Doug

I think no matter what sprag you have in there, when you hammer it with broke teeth on a ring gear, she is going to break. The sprag DVW talked about above was the strongest sprag available but still broke. BUT, it held and kept the engine from over reving.

Don't push my buttons!!
Nothing like a reverse manual push button car!

Mmmmmmmmm, LOVE my powerglide. LOL

I'm not sure how true it is, but the shop that rebuilt my dad's 727 said the bot in sprag is no better than the stock unit

Until the gears lock up on the shaft and the trans locks and your car skids through the traps and possibly into the wall.... yup replacing a car is way cooler than replacing a sprag

I had inquired about the bolt in unit, as well as the "super sprag" and it wasn't deemed a necessity by my builder. I can do a 727, but when it comes down to the fine details of getting a shift to take place quickly and efficiently... that's a gray area for sure.

A stock style bolt in sprag is a complete waste of time and money , as you can see it did NOTHING to stop it from rolling. The purpose of it is to replace an outer race that is lose in the trans case.

The best bolt in sprags are not cheap ... A+A or Coan ... and should not let the rollers roll over, but with enough force they could break the case still.

When I install one I use the 6 bolt and machine to add the extra 2 bolts under the rear support.