[McDeuce]

Vehicle: 1964 F100 shortbed
Engine: 1998 383 LT1 - ~460hp/460tq as shown here
Rear: Ford 9 inch from a '72 Bronco (narrowest made)
Tires: Mickey Thompson Sportsman Radials (~31" tall and 15" wide)
Use: No towing or hauling, just daily (spirited) driving, cruising to shows a few hundred miles away, maybe one or two trips down the strip a year.

I've been reading about pros/cons of 65E and 80E, but cannot come to a conclusion. 80E has more parasitic loss, but is tougher, and I've read different things about 1st to 2nd ratios.

I'd like bulletproof over speed, so I'm leaning toward the 80E. I'm buying a new harness so connections aren't worrying me.

Recommendations? Any "gotchas?"

Also, suggestions on a rear ratio?

Thanks!

[McDeuce]

Well, 63 have looked at my question, and zero responses, so this must be a tough one.
I've found places online like Goodfellas that say the 4L60E's can be built to withstand a lot of HP for a pretty reasonable price. It sounds good, but I'm still wondering if anybody can verify these claims.

[Crosley]

you answered your own question about bulletproof .

Use the 4l80e

Get a custom built converter smaller diameter , I would not use the heavy OEM converter for the L80e trans.