Anyone ever hear of a Spicer 3053 Transmission? NOT 3053A or 3053B, just plain old 3053?
I was crawling around under the truck today trying to solve a park brake problem, and decided to check my transmission model number while I was under there. This little bit of investigation was prompted by a response to an earlier posting of mine asking why my truck seems to run faster than Deuces are supposed to run.
According to the TMs, Deuces in standard configuration are supposed are supposed to top out at about 54 MPH at 2600 engine RPMs. My Deuce tops out at about 60 MPH and 2450-2500 engine RPMs, I can't get up to 2600 RPMs in fifth (but I haven't replaced my fuel filters since I picked it up at the DRMO either). My speedometer and odometer are off as well. The speedo reads about 10% low, 50 MPH indicated is about 55 MPH by my GPS. The odo is about 5% low, a 12.7 mile trip by the odo was 13.4 miles by my GPS and confirmed by the odo in my '05 Venture.
All of which seems to indicate my Deuce is geared differently than most, most likely a higher overdrive ratio (lower numerically). I know I can solve the speedo/odo problem with a speedometer adapter change, but I need to know my 5th speed drive ratio. From the data I've collected, it appears my 5th gear is about 0.71, vs the .79 listed in TM 9-2320-361-20 for a Spicer 3053A trans.
So, has anyone out there heard of the Spicer 3053 tranny (not 3053A or 3053B) and what can you tell me about it?
From my transmission data plate:
Spicer Wolverhampton England
NSN Contract: DAAE07-850-J019