dumb question on automatic swap?

[Lin]

An Allison tech told my the 647 was rated to 305 hp and 900ft/lb of torque.  It is supposedly just a later version of the 644.

[buswarrior]

Lots of those Spicer transmissions out there.

Get a donor tranny and be done with it?

Keep the stick, juice the 8V, best of both worlds?

MC5 is a fine rocket ship.

happy coaching!
buswarrior

[RJ]

Brian -

Cliff's comment about the 5Cs coming out of Winnipeg with either the 6V71/HT740 combination, or 8V71/Spicer 4-spd is correct.

The only way you can fit an automatic to the 8V71 is to use the MT-6XX series, as the 8V/7XX is too long.

But since the 6V92 is the same overall length (w/in 2.5cm) of the 6V71, the combination works, and works very well.

Yosemite Transportation in Yosemite National Park near me here in CA have two 5Cs with the 6V/740 combo, and they scoot around better than the Series 60-equipped 40-footers do at the 4K > 7K elevations found in the park.

I liked Paul's idea!  Road Trip to LUKES!!  Wooohooo!!

FWIW & HTH. . .

[Gary '79 5C]

Thanks again guys for keeping me in the know.    I never picked up the fact that the shorter 644 was required only with the 8V engines.
I am very pleased to hear, as I do have a MT644, and have wondered if and when that day it goes Kaputz, what he availability of a replacement VS a 740. I would think the latter is much more prevalent.
Mine was done over with a 6V92TA & the MT644. Its the only bus I have ever driven, so I can not compare, but it does well in the speed dept. I am living with the pleasure of seeing the world, (@63mph) and getting 7+ mpg. The N90 injectors I have can swallow alot of fuel.

Thanks again,
Gary