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Here's the setup. 4600lbs, actual tire diameter of 36", 5.38s, Detroit locker rear, ARB air locker front. The TC is divorced, so mounting is a non-issue. It will be very rare to do a standing start under full power on asphalt. Even then, I plan on engaging well under the powerband and doing it in such a manner as not to "spike" the drivetrain. This thing is not a dragster. I never intended it to be. It will, however, have to prove itself against somebody, sometime, and I want all the advantage I can get when that happens. When I'm out in the hills that close ratio in the Richmond 5 would be perfect as well.
Well, the race car has a V-gate shifter, but I have a std pattern design for galaxie. I inherited from same friend. It came with tranny when he bought it. We got him a V-gate shifter and he donated the shifter to me for all the installation work(ya, I'm the resident tranny expert in my group!). I also got another V-gate with Nash I just bought.
You can use a V-gate shifter on the street, I used to years back, but I don't want to put that BIG of a hole in the floor. A std shifter comes thru a 3" dia hole, the V-gate style needs a hole the size of a SHOE BOX!!! They are bulky, but for racing there is NO match.
Hmmmm. Initially I was leaning toward the R5, but started considering the TL because I was worried about strength. You are running 11's on slicks in a 4000lb car with one, so I'm back to the R5. I did a comparison, and my setup with an R5 would have shift points virtually identical to your wagon. I think less than 3mph difference. Like I said earlier, I really like the ratios in the R5. That low first gear makes 4-wheeling a little easier than the 2.78 too.
As a last resort, maybe a call to Richmond and talk to them about actual torque rating of the new 5 spd. The Richmond IS basically a Doug Nash(they bought them out). The new Richmonds have roller bearing gears on them, the old Nash stuff is brass bushing. From what I have seen, all basic parts are interchangeable
I used a Ford bearing retainer on the front of my Nash. Bolt pattern is the same. It allows me to use the 1 5/16"-18 Hemi spline input(std race Nash) and the Ford big input bearing. You'll be able to order up Ford spline, but back then it was all Hemi spline.
I love the look of the ratio set in the Richmond. But I was worried about strength. You think its good enough?
-Scouder
Scouder, what about a NV4500? You still get a very deep granny gear for 4 wheeling, and 4 other streetable forward gears... and it's from a Ram w/ Cummins diesel so you know it's strong....
Scouder, what about a NV4500? You still get a very deep granny gear for 4 wheeling, and 4 other streetable forward gears... and it's from a Ram w/ Cummins diesel so you know it's strong....
The NV4500 was one of the first trannys I thought of, mainly because they are in the junkyards. After researching, I found they are basically a 5-speed equivalent of the NP435 I have now. The 5th gear is stacked on top, as an overdrive. This would be cool for highway driving, but it leaves me with a gearset almost identical to what I have now for 1-4. Although that granny low first gear is the nutz for wheeling, it leaves me with 2,3 and 4 for performance driving. Since 2nd is also quite low, it makes a pretty big drop into 3rd and again into 4th, pulling my engine out of it's powerband by around 1000rpm. The other problem is that it weighs 200lbs. That's not typically a concern in a 4x4 for sure, but I have this one on a diet. I want it to weigh in at 4600ish when I "complete" it. Then I'll go back through it over time and try to trim out another 3-400lbs. My wet dream number is 4000lbs, but with 2 Dana 60's and big tires that might be a stretch.
I will be dropping my 5.38's in both ends as soon as I am done with the rollcage, and based on how it performs I will make a final decision on the ratios I need. It's gonna take some seat-of-the-pants input.
Scouder, good research. To me, it seems that 2nd to 3rd is fine, but 3rd to 4th is a pretty big drop. I gotta really scream mine to make it not drop too bad when I hit 4th.
Yeah, 200lbs, the beast is heavy but man it is beefy yet compact.
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