transmission help

[axlr8]

ok members. i am trying to convince the dad to get a cucv to tow our boat....he wants to be able to get to 75 or 80 and still be able to tow 3k.....what could be done to aid this....70 will do er but faster top top will keep her nicely purring at 70.....shoot a few ideas this way....thanks!

 

[101coolcars]

3k is a bit heavy for the M1009, IMO, plus its a short wheel base vehicle, stability at that speed may be a concern. the m1009 will have new tires,,right? have him buy you the truck and just follow him to the lake

 

[ODdave]

cucv's are cool, but unfortunatly not for this aplication. sorry.

 

[axlr8]

ok so is there a better trans that can be swapped/traded for better speeds hauling tops of 1500 on a low center of gravity trailer????

 

[ODdave]

700r4, 4l80e or nv4500

 

[axlr8]

alrighty just the answer im looking for....thanks oddave! what kinda vehicles should i focus on to find one of these hunks of metal?

 

[Cucvnut]

a M1008 with a nv4500 or 4l80e.

 

[axlr8]

might i ask what speeds i should be looking for at the 2200 to 2400 rpm range or is that to difficult? and thanks for the speedy help guys

 

[BTC70]

Gear ratio Calculator

This site will let you try different transmission / axle ratio / tire size combinations. And you can even preselect many common transmissions and it will pre-fill the ratios.

Gear Ratio Calculator

 

[Warthog]

If you are wanting to go 80mph in a diesel powered CUCV with 4.56 gears, your engine will blowup in a short period of time.

These trucks where NOT designed for this application. 55mph is the designed top speed.

The M1009 has 3.08 gears but doesn't tow very well. People do it but it has it's limitations.

I guess you could spemd a BUNCH of money changing engines, transmissions, gearing and tires to achieve what you want.

I would look for a gasser with an overdrive and 3.73 gearing.

YMMV

 

[axlr8]

ok heres what i came up with....a m1009 with a th700r4 running through the np203? and 3.73 gears....it says in 4th shell run 1800 rpms at 75 mph is this correct or am i reading wrong?