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What Trans Could It Be?


Lmackattack
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got the info ...T2060 with 5.88 rears.. What do you think will this have a faster 2nd gear than the old 2 stick 6 speed? I think the t2060 has a 5.25 in 2nd low and 3.05 in 2nd high?

yes 2 sticks have a 4.99 in 2nd direct and 8.20 in 2nd lo if its a 1071 it will be 13.42 in 2nd lo lo with those 5.88 in most situations you will only need low range for reverse truck should top out around 65mph though

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yes 2 sticks have a 4.99 in 2nd direct and 8.20 in 2nd lo if its a 1071 it will be 13.42 in 2nd lo lo with those 5.88 in most situations you will only need low range for reverse truck should top out around 65mph though

A 2 stick 6 speed (TRXL107, 1071) is direct in hi gear and is usually used with 4.17 rears when using 11R22.5 rubber, for a top speed around 60 - 62 MPH @ 2100 RPM.

The T 2060 2070 & 2080 have a .60 overdrive in hi gear.

"If You Can't Shift It Smoothly, You Shouldn't Be Driving It"

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What is an RD690? I've seen the term a lot but not well versed on the newer stuff.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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I've seen plenty of those around but have never worked on one. I suppose the R690 has the more standard hood of the R model then?

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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I've seen plenty of those around but have never worked on one. I suppose the R690 has the more standard hood of the R model then?

Rob

I don't think they made an R690, as the plain R models were discontinued in the late 80's, and the EM7 300 wasn't introduced until about 1990.

"If You Can't Shift It Smoothly, You Shouldn't Be Driving It"

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A 2 stick 6 speed (TRXL107, 1071) is direct in hi gear and is usually used with 4.17 rears when using 11R22.5 rubber, for a top speed around 60 - 62 MPH @ 2100 RPM.

The T 2060 2070 & 2080 have a .60 overdrive in hi gear.

should have made my post longer, what I was getting at is the t-2060 is geared taller in 2nd vs the old 2-sticks, that truck with 5.88 still will run down the road at 65 one with 6.06's would still be as fast an old 2 stick as far as road speed.

as far as the RD part of the truck it refers to the type of frame 3/8" thick 10.5" tall I had a 79RD once you can put the newer style hood on a old R radiator would have to swaped

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as far as the RD part of the truck it refers to the type of frame 3/8" thick 10.5" tall I had a 79RD once you can put the newer style hood on a old R radiator would have to swaped

You are correct, but Rob was asking what an RD690 is, so I posted that photo.

The older RD685, 686 etc. had the regular R model hood from the factory.

"If You Can't Shift It Smoothly, You Shouldn't Be Driving It"

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