Quote:
Originally Posted by blazzin1
Like on the MM6 above, for 1st gear, isn't it, for every one turn of the driveshaft, the rear wheels turn 10.42 times?? Or is that backwards???
|
Backwards, 2.66 turns of the crank is 1 turn of the drive shaft, and then 3.91 turns of the driveshaft is 1 turn of the tires. 2.66 * 3.91 = ~10.42 turns of the crankshaft per rotation of the tires in first gear.
Quote:
Originally Posted by DanSS24
I'm pretty sure the GM engineers are being conservative, but it is up to the consumer to take a chance. My 98 Camaro SS trans was only rated up to 400 lb/ft torque, but it handled well pass 450 when I upgraded it. And never had a problem, even with a 3000 stall torque converter. But then again, that was just an auto trans. Not sure about manual trans.
|
I believe all 94-2002 MM6 T56's are rated at 450 ft*lbs, not 400...but yes you're right, people put more through them a lot. The only significant difference in 94-97 and 98-2002 F-Body T56's was the input shaft/front plate/bellhousing/slave cylinder change for 98...the 2 1993 T56's in the F-body were rated to lower torque because of first gear.
A LOT of the torque rating of the trans has to do with 1st gear. The "shorter" first gear is, the more it multiplies the torque that the main shaft see's, and the more it's able to break it...after that, the next culprit is the main shaft diameter...the strongest T56's have larger diameter output ends of the main shafts than the lower rated T56's...the strongest way to build one with OEM parts for example is an MM6 gear set from a 2006/2007 ZO6, and an SSR 32 spline main shaft. (takes some machining to cobble together)