Is 1980 gruman a v drive set-up

[Bill in KS]

One probably getting scrapped.  Thought I might rob it for a future swap in the '04. 
Thxs
Bill in ks

[RJ]

Bill -

Yes, if it's a Grumman Metro city transit.

Be careful, tho - it could be a 6V71 mated to a V-730.  If that's the case, you'll go slower when you step on the throttle - that powertrain's gutless and then some.

OTOH, if it's a 6V92TA, hot rod time!!

Rear axle will probably be a 5:36, good for 55 mph @ 2100 rpm.

FWIW & HTH. . .

[Bill in KS]

There are a few 4106 donors around here so I can find the right diff.   
How do you I'd a 6v71. Vs. 6v92 ?

Thxs
Bill in ks

[luvrbus]

Look on the front camshaft pulley it will be embossed there or the engine serial number

good luck

[buswarrior]

Presence of a turbo for the 6V92.

happy coaching!
buswarrior

[Barn Owl]

6v92 is a sweet upgrade. Better fuel mileage and runs the same over a mountain pass as it does at sea level. Mine is the 8v71, my father's is the 6v92 and I have hundreds of miles driving both. If I had the money the 6v92 would be in my bus asap. It is that good.

[Runcutter]

If my memory serves (no guarantee of that, though), a Flx of that vintage could also have been an 8V71 - particularly if it was a 40-footer. 

That was early in the 870/Metro model.  They had a new design with the powerplant/rear end on an A-frame.  Many cities (Washington DC comes to mind, I think Chicago and New York were the other two biggies) had major fleet defects with the A-frame cracking.  They re-engineered, and may have fixed the problem by 1980, but I'm not sure.  I bought a fleet in 1983, and I do know they had fixed the A-frame by then.  We still breathed a sigh of relief when Flxible was the high bidder. 

Arthur

[TomC]

The front block on the top surface by the head will have a cast in 92 also.  Otherwise, the 6V-71 and 92 look exactly the same on the outside, as compared to the 8V-92 that has a big vibration damper on the front of the engine compared to the 8V-71.  Good Luck, TomC