RX-Snake: Transmission
 

joedls, or ayone else:

What are the ratios in the Top Loader:

1st ?
2nd ?
3rd ?
4th 1:1

I have a great spreadsheet for plugging this stuff into so you know what your mph/rpm curves are. I would really like to carefully consider the whole system for optimization, from engine through trans to axle and tire size

Depends on whether it's a close ratio or wide ratio. I'm not sure which one yours is.

Wide ratio: 2.78 1.93 1.36 1 2.78 reverse
Close ratio: 2.32 1.69 1.29 1 2.32 reverse

Here is a link to help you id the tranny to determine if it is a close or wide ratio: http://www.davidkeetoploaders.com/idchart1.htm

Here's what the trans mission is identified as:
HEH-P 01526
1964 Mustang 289 wide ratio 25-spline
8/20/64 to 12/30/64

I've always prefered Wide rations over Close for the street. Now, on a Drag car the % of drop between gears should be ABOUT 19% per gear ( if my brain is working right ). Now that is what we used in the Seventies.

What is the current diff gear ration on the RX?

The Wide Ratio will be fine in most cases. We can make it work. We can not do better --as far as strenght for a 4 speed-- than that Top Loader.:thumbs_up:

Some poor anal restoration guy is looking for that trans for his 64 Mustang.:smack:

Yeah, and he might be willing to pay a stupid price for it. Though I don't know about the 289 model. It's the 427s that go for big bucks.

According to JOe the ratios are:
Wide ratio: 2.78 1.93 1.36 1 2.78 reverse

See the engine thread. I posted a graph of mph:rpm assuming this gear box, 255/60x15 tires and a 3.73 rear end, which I *think* is what's in there now, but I need to check.

I was offered $800 for that tranny from a guy that just wanted a toploader. It would be worth more to a guy that is looking for a correct date coded tranny.

$800.00??????? Damn, you must really LOVE Ben and the boys.:hail:

Nah, they're too damn ugly for me. I just wanna drive the car and I couldn't let them put a SBC in that car. :rolling:

Works for me. You going to be there Sat at Ricks????