Powerglide vs 3 speed

[Fla Grown]

I currently have a 3 speed Saginaw in my 66 C10. I am pulling the engine for a rebuild and was considering converting it to an automatic. I found a rebuilt 65 Powerglide with a genie shifter with 1400 miles on it for $600.00. The 3 speed doesnt bother me and shifts flawlessly, just looking at my options as I do the tear down. Would the powerglide help me on the top end? I top out at 55-60mph?

[contagious102]

Both are 1/1 in final gear,would be the same.Need to go with a overdrive trans like the 700r4,to lower the rpms in top gear.

[kieth]

Originally Posted by Fla Grown

I currently have a 3 speed Saginaw in my 66 C10. I am pulling the engine for a rebuild and was considering converting it to an automatic. I found a rebuilt 65 Powerglide with a genie shifter with 1400 miles on it for $600.00. The 3 speed doesnt bother me and shifts flawlessly, just looking at my options as I do the tear down. Would the powerglide help me on the top end? I top out at 55-60mph?

send me the following:

1. engine

2. rear axle ratio

3. tire diameter (rear tire height from ground to top of tire in inches)

4 Your e mail address

I will send you a spreadsheet that shows usable torque to the ground for different engines and drivetrain combos....and a speed chart showing speeds at 1500, 2000, 3000, and 4000 rpms In order to pick up additional speed one must have a OD, looking at all these variables at once will allow you to make a good choice in the transmission, rear axle ratio, and tire size, and how it will effect the rpms at a given speed and to keep it from falling on its face. Kieth

[hopped up]

Get a th350 instead of the powerglide if youre gonna swap it out. Lower first gear means better pickup of theine but youll still be revving the same since theyre both 1:1 final ratio
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