Coan Engineering continues to be the leader in 'Class Competition' transmissions through the development of its 350XLT. 350XLT transmissions are built using a General Motors Turbo Hydramatic 350 case making them a direct changeover from a Powerglide. While these transmissions are based upon the TH350, the 350XLT is quite unique.
The entire rotating assembly of these transmissions is 3/4" smaller in diameter than any TH350. This, along with the use of CNC machined billet aluminum clutch drums and in some cases billet aluminum planetary carriers, reduces the rotating mass and minimizes parasitic losses making them the fastest 3 speed automatics available.
+ 16 DP Straight Cut Planetary Gears
+ 7075 Billet Aluminum Drums
+ 300M Alloy Input Shaft (PG or Turbo spline)
+ TransBrake valve body with Clean Neutral
+ Stef's Fabricated Deep Aluminum Pan
+ Radial Ball Bearing Drum Support
+ 21" Shorty Model w/ Bearing
+ Xtra-Lite Clutch Packs
Coan "Ultimate" 350-XLT tranmissions through their unique valve body circuitry eliminate the need for an intermediate 'sprag' to further reduce rotational mass and enhance performance. Combine these features with 54 available gear ratios and you are sure to be in the winner's circle with your 350-XLT.
Exclusive "Ultimate" Features:
+ Eliminates the failure prone intermediate one way clutch
+ Reduces weight of rotating assembly
+ Valve body featuring a P-RN-1-2-3-N pattern
+ CLEAN NEUTRAL for safe shutdown