Transmission Build-up



I had some doubts about whether my mildly modified 727 Torqueflite could live a long happy life behind blown HEMI power, so I contacted John Cope, owner of Cope Racing Transmissions. John is a foremost Chrysler performance transmission expert, and is highly regarded in the Mopar racing community for building top notch performance Torqueflites. After some discussion, we decided to go with one of John's Pro Race II transmissions. It's his ultimate foot brake unit. The list of bulletproof parts inside this transmission includes:


Griner reverse manual valve body with low band apply

Bolt in sprage

Alto Red Eagle racing clutches

Kolene steels

Thicker band strut

Red lined bands

Teflon rings

Front billet servo

Rear billet servo

4.2 billet 2nd gear lever

B&M deep aluminum pan & billet filter extension

Modified pump support for more flow to the high gear clutch

Rollerized planetary gear set in 2.45:1 1st gear ratio with steel spline, and rear roller kit

Hardened pump gear set


Parts are just parts, but add in CRT's expertise and special modifications, and you end up with a very durable quick-shifting transmission that will provide years of trouble-free service. Having that kind of quality gives me peace of mind every time I nail the throttle and grab a gear.

The complete rollerized kit, which includes, front and rear planets, front and rear ring gears, rear roller kit, and polished output shaft.

Billet steel front clutch drum and aluminum piston


Rear governor support with bearings


Low reverse drum with bearings


Beefy 4 pinion front planetary with bearings and steel splines. Stockers have aluminum splines, which can strip under high power.


On the left is a pump gear set made from 4340 chrome moly. On the right, is a set of factory gears. Notice the smaller, weaker gear lugs on the stocker. Under high power, they can break.


Front & rear billet servos with stainless steel springs and thicker retainers



For more information about CRT, visit their website, Cope Racing Transmissions.