We switched to the Aluminum spool from MW, two years ago. And 100 plus runs behind 1400hp @ 3300lbs. I would highly recommend it. We picker up ET...

 

Here is mine. 35 spline 1000 hp at 1650 pounds. REM polished 7.33 Motive gear. MicroBlue bearings.

 

Here is mine. 35 spline 1000 hp at 1650 pounds. REM polished 7.33 Motive gear. MicroBlue bearings

 

Gorgeous.

 

I switched to polished gears, coated bearings and the aluminum spool. All those together we picked up almost .03. From 3.121 to 3.092 and 1 full mph. 103.3 to 104.4 repeatedly. Very happy with the whole thing. Single 4 all motor sbc qualifying in the middle of a class dominated by 500" blown alcohol cars. One more tenth and we will be winning the big money. Please pass the prune juice.

 

Gotta be low on the gain/dollar ranking.

 

I was thinking this ...had to ask though.

 

Do you set up the gears any different than when using a steel spool?

 

The same. The pattern dictates the lash. You can see I like it just inside of center. Any deflection at all will push the pattern to dead center on the tooth. I'm thinking this one ended up at .0104" lash average taken in 10 locations.

 

i broke a strange spool in 6 passes in my 9"

 

I'm guessing there was some pretty significant housing alignment issues. Did it break anywhere near the splines?

 

Aluminum?

 

yep.... i wonder if the MW one is much tougher.

 

it just chunked it out. granted we were 2900lbs. 1800-2000hp 1.12 60's

 

We have run the 7075 aluminum spool in a 3300lbs & 1400hp...

 

Not true! We have a lot of Super stock type cars (3000+ lbs) ruining a our 35 spline spool. The 40 spline spline spool are used most everything else. And we do recommend using the 40 spline if it will fit your rear. Our 11" Modular rear with indefinite gear life uses a 40 tooth aluminum spool. All the M/W aluminum spools are produced from 7075 heat treated forgings. Not 6061 that some manufacturers utilize.

 

i've got a fabricated 9" rear end with a strange ultra case 3.250 bore 40 spline axles....

If you guarantee the your aluminum one i'll buy it.

I'm about to buy a 4.11 gear set as well and i'll buy that from you as well.

my car has low 1.0x 60's
pulls 3 g's at the hit and runs 4.20's @ 2850

 

I would agree with Mark @ MW on this. We have been running MW Aluminum Spool in a few Ultra street cars. One of them is a Pro Charged @ 3350, with 1.16 60ft. The other is a NOS car @ 3150, with a 1.19. The best part of this deal is the weight savings 4.5lbs in the spool. And The hole package with lightened Gear and Titanium studs, & Aluminium 1350 pinion Yoke with the 40 spline Gundrilled Axels,They saved a total of 22lbs over the steel spool with 35 spline Axels. It's crazy... IMO Ultra Street & x275 reminds me of a max effort super comp car. Trying to get every bit of ET out of the combination. The fields are so tight. One last thing, MW also offers a ceramic wheel bearings, & Pinion support bearings, setup for low drag...

 

How much does tire choice, radial vs. slick, 28 vs 30, etc play into when a person should no longer look at an aluminum spool? If a person is already needing to purchase a new spool, the cost for the weight savings is worthwhile.

 

I assume you are using a 9” Ford type rear. The 40-spline spool would work for your application. We use the 40-spline spool in applications including the 11” Pro-Mod rears that have the 40-spline aluminum spools.

 

The 40 spline aluminum spool is only available for the 3.812" bore case. You will either need a new case or switch to 35 spline axles.

 

MW aluminum spool won't fit in a 3.812 ultra case either, for the record. Its too wide, only half the threads on the adjusters thread into the case.

 

MW aluminum spool in mine, about 1000 runs on it currently and it looks brand new. 1250hp dragster that goes sub 1 second 60 foot at 1875 pounds.

 

...

 

does anyone make one that fits a ultra case with 3.250 case

 

Yes, but only in 35 spline. 40 spline needs the 3.812" case.

 

We run aluminum spools in offroad short course trucks. Never broke 1 and we land on the throttle all day......
Oh....also 40 spline ctm 300m axles

 

I had 2 cars with 40 spline Mark Williams rear ends and 3.250" case as I remember.

 

The steel 40 spline spool fits right into the MW 3.250 case. To run the aluminum spool you need the 3.812 case.

 

A guy has a aluminum 31 spline spool.locally..he had it in a dirt car..will it work in my 425 hp maverick..with drag radials and cal tracs at the drag strip ??

 

Certainly as long as your axles are up to the task.

 

I just purchased a new set of axels from Quik perf...hopefully they won't twist