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Old 12-09-2010, 09:56 AM   #1
harrydunn
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Join Date: Dec 2010
Location: Columbia, MO
Posts: 256
Transmission Code / SPID

Morning Guys--

Will the transmission code on the SPID tell me whether I've got a TH350 or TH400? I need to take a photo and post that up I suppose.

Also, I've not been around old transmissions since the days of my '68 Cutlass (2-speed Jetaway) and '74 Camaro (3-spd manual) many moons ago. Would you advise to at least change the fluid/filter or should I leave things alone? I've got some engine oil records but nothing on when the transmission may have been serviced. Shifts very smoothly.

Thanks,

Mark
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1972 GMC 2500 Custom, 96K miles, Purchased New By My Grandparents
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