Doctor Diff spools

[early A Bob]

Doctor Diff has this 8 3/4 spool on their site for only $100 bucks. Anyone have any experience with these before I pull the trigger

 

[70aarcuda]

Work great

 

[Jadaharabi]

View attachment 1715242406 Doctor Diff has this 8 3/4 spool on their site for only $100 bucks. Anyone have any experience with these before I pull the trigger

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I have bought several from him. Still have 1 that I need to set up.
But I am going to 35 spline after I get this 1 built.

 

[Biff]

Good product installed one in the bosses 600hp mustang it has outlasted 3 transmissions one motor still hangen in there.

 

[j par]

Pull the trigger you'll be fine..

 

[Cope]

It's a spool, they hardly ever break.
If you break that good on ya!

 

[early A Bob]

Ok thanks everyone. I guess I’ll buy it.

 

[Jadaharabi]

Ok thanks everyone. I guess I’ll buy it.

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Don't buy it to use with 3.55 or 3.23 gears on the street.

 

[j par]

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Don't buy it to use with 3.55 or 3.23 gears on the street.

Crap to late...

 

[Jadaharabi]

Crap to late...

j par your using a Dana.

 

[j par]

j par your using a Dana.

Well thanks for reminding me LOL yes my spool that I got from dr. Dif (Cass as we all know him) for my 8 3/4 almost went out the back side! I blew the caps and spit the ring gear against the housing and it looked like a spinal cord. I sold the small spool in fine condition along with the rest of the parts. I bought another spool from dr. Diff for my Dana that I currently have. It looks identical just a little bit bigger.

 

[Cope]

It looks identical, just a little bit bigger...

That's what she said!

 

[Biff]

You mean nothing she hasn’t seen before only smaller...

 

[early A Bob]

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Don't buy it to use with 3.55 or 3.23 gears on the street.

4.86 drag car

 

[Cope]

OH HELL YEAH!!

 

[Jadaharabi]

OH HELL YEAH!!

THAT'S WHAT I'M TALKING ABOUT!!
YEAH!!

 

[Cope]

Not sure what kinda power you want to put down but maybe with that car and the power you want to run a hundred dollar spool ain't a cost saving measure.

 

[Jadaharabi]

Like j par was saying you'll break the caps before you break that spool.

 

[early A Bob]

Not sure what kinda power you want to put down but maybe with that car and the power you want to run a hundred dollar spool ain't a cost saving measure.

I have two engines. A 350 horse 400 low deck & a 420 horse 383. The 400 is ready. The 383 I bought from another racer & has a lot of passes so it needs freshening up. That why I ask because I didn’t want to blow the rear out on the first pass.

 

[early A Bob]

Like j par was saying you'll break the caps before you break that spool.

Maybe I should upgrade to stronger caps ?

 

[early A Bob]

The white 69 Plymouth has a mild 318 & ran 8.70’s eigth mile. I recently sold it & bought the red Barracuda. Trying to get it ready for next year. Don’t have a lot of money to spend on it. I’m thinking it will run 7.70’s which is a LOT quicker than the Satellite.

 

[early A Bob]

The Barracuda has a glass front clip & hood. I bought an extra hood brand new as a spare. Got a deal on it. I also bought a 64/5 Barracuda grille to put in it. I like that better than the lighter Valiant grille. Maybe a pound but I just like it better.

 

[mopar65]

Maybe I should upgrade to stronger caps ?

The stronger caps will help. But I ran a bunch of 10.49 in the 1/4 in my 3520 pound 73 big block dart with the stock caps.

 

[j par]

It looks identical, just a little bit bigger...

That's what she said!

Hey that's no fair! If you're going to take a shot at me at least quote me so I find out about it? LOL

 

[j par]

The stronger caps will help. But I ran a bunch of 10.49 in the 1/4 in my 3520 pound 73 big block dart with the stock caps.

My car with me in it was about 3, 000 lb and I had Hoosier drag slicks and I got about 20 passes? Before the Caps blew off. 489 case brand new gears brand new bearings set up professionally. I was at about 11 5 to 11 7 in a 4-speed car though.