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Customers

Brian A.

Brian A.

The 408 engine runs strong, put on dyno 405hp with 415tq N/A not shabby.. also was on 22" wheels with those numbers est. 500-525 @ crank. Thanks so...
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Steve B.

Steve B.

Thanks for the help with my 426 stroker.
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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Maurice

Maurice

Maurice 73 Dodge Dart
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Clay B.

Clay B.

Thanks for everything !
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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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Taylor M.

Taylor M.

Thanks a lot John !
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Don S.

John, I can't emphasize this enough, but without the help you're getting me I could not have afforded my dream engine! I literally have cringed when...
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James G.

James G.

5.80 in 1/4 mile @ 244 mph & 3.76 @ 197 in the 1/8 mile
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Bruce P.

Bruce P.

You’ve got a big fan in me. Oh yeah, the car is awesome. Runs like a raped ape. So thanks a lot !
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Benny C.

Benny C.

Thanks for the Great Mopar Service !
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Pete L.

Pete L.

Mopar RB 440 Aluminum block with a Procharger. Makes 1600 HP!!
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Hannu O.

Hannu O.

thank you very much from Finland!
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Bob F.

Bob F.

Plymouth 426 Hemi
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Alan P.

First off, I just have to say that I have never came across a more stand-up guy that takes his time to connect with his customers and have the...
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Jared B.

John, You Rock! Thanks again for the great deals and speedy service. Really appreciate it. Jared Dakota R/T
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Ryan

bought numerous things and all transactions went very smooth. Responded to emails within a day or less. Ryan
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Ken L.

John, Thanks for all your help. I wish I had known about you before I ordered the rest of my stuff! Thanks, Ken
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Jim A.

Jim A.

Two year champion in modified tractor pulling classes named "Watch This Trick". Chrysler 426 Hemi. Thanks for the Great Service!
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Matt G.

I just want to say thanks for all that you have done for me, because over the weekend I was the fastest R/T out there with no power-adders and still...
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Jason B.

Thanks John.. you have been awesome to work with and I am REALLY looking forward to driving my SRT-10 again :) Jason
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Mitch C.

Awesome work! Glad I went with you guys! Anyone I know of that wants to build I'll send your way! Thanks John! Your the man!! Mitch
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Colton H.

Colton H.

"Johns the man, bought a 410 package from him years ago after I got back from overseas. The caveat I gave John was that it had to pass Californian...
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Ricky R.

Ricky R.

1937 Chevy Legends Race Car, Thanks for everything!
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Kayden G.

Kayden G.

Well your service is amazing. Never had better from any company I've ordered from! Kayden
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Mark Williams Rear End Assemblies

Ford 9"- The Ford 9" is definitely the most popular of the rear ends in drag racing. It offers good strength characteristics and the largest variety of gear choices. The thirdmember type center section allows a racer to have multiple gear ratios available and is much easier to change than a rear loading type rear end. Work can be done on the rear while it is out of the car without major disassembly. With a full-floater style rear the brakes do not even have to be removed to remove the thirdmember. There are basically two negatives to the Ford 9". First it weighs about 10 lbs. more than a comparable 12 bolt. Second, because of the larger pinion offset the gears tend to be about 5% less efficient, although this can vary depending on gear ratio.

Mark Williams 11"- The Mark williams 11" is by far the strongest of the three types. The 11" system runs virtually maintenance free through entire race seasons. With dimensions and offsets very similar to the 9" Ford, very little modifications are necessary to change over to the 11". The downside to the 11" is that it weighs about 75 Lbs. more than a comparable 9" Ford. Gear changes can be rather difficult also. It is recommended that the 11" be run in situations where gear changes are not frequent. The cost of replacing worn gears and the dependability of the 11" make up for its downsides.

GM 12 Bolt - The lightest of the three, the 12 bolt offers a large selection of gear ratios (although not as large as the 9") and good dependability. 12 bolt modular housings are also narrower than a 9" or 11" at 14" wide instead of 16" wide. The 12 bolt is mainly run in situations where weight and efficiency are major factors, such as Comp and Comp Eliminator. The disadvantage to the 12 bolt is that gear changes can be difficult.




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