Gear Vendors question
@ clementine said:
"but kind of a short reply for you......are you feeling ok?"
Ok then, for you;
Part 2;
The 200R4 has pretty good ratios and splits. The ratios are
2.78-1.57-1.00-.67 od and splits of .56-.64-.67 ..Thus the total range is
2.78/.67=
4.15 this is exceptionally good
and like
@jbc426 said; with the convertor, that will act like a 5-speed LU
The A500/.69od by itself would be;
2.74/.69=
3.97 . which is also hard to beat; splits are .56-.65-.69
The GVod added to an A999 would be
2.74/.78=
3.51 . not so good. but the splits are .56-.65-.78
-----------------------------------------
for you 4-speed guys;
The A/F body, overdrive box, together with a GVod, is a hoot!
It has the added bonus that you can split every gear! The ratios are;
3.09-2.41-1.67-1.30-1.00-.78od-.57od yes SEVEN useable ratios.
Giving a range of; 3.09/.57=
5.42.
the splits are .78-.69-.78-.77-.78-.73
I optimized this with a rear gear of 3.23s to put, top of First-over
at 6000=62 mph; that's just one, lightning-fast, electric shift.
In .78 overdrive, this makes 65@2040 & 75@2350; and
in Second overdrive, 85@1950.
The starter gear is still 3.09 x 3.23=9.98.
The nice part about this combo is that you can run absolutely any rear gear you could want. I ran it with 5.38s, and with 4.88s, and settled at 4.30s for a while .
4.30s had a nice parade gear of 13.29, that allowed 3.5 mph @580 rpm.
and 4.30s got me 60MPH at 5400 in Second Gear.
Eventually I installed 3.23s, and ran a 223*cam so it was spot on for low-ET.. This would be a near perfect combo for a modest 318.
However when that 223* cam died, I upcammed just one size, and immediately I lost the bottom end torque that I had come to appreciate the 223 cam for.
and, I now found the standard ratios in the wrong spots most of the time, and splitting ALL the time, just gets old. I needed more gear, and 3.55s were not enough. So
Next up was;
The
A833Commando/GVod, with a total range of 3.09/.78=
3.96
This is still more ratio than my hi-compression 360 needs, but it's a lot of fun. At the time of install, I had recently up-cammed to a 230* cam; and with the previous trans combo, I had lost enough very low rpm torque as to be unacceptable. Not long afterwards 3.23s went in, cruising at 65mph became 2040, the starter gear was 9.98, and 60mph became 5820 in First-over; just about right for that new 230* cam..
Eventually I went back to the 3.55s for a slightly sweeter parade gear; and with those, the car went 93 in the Eighth@6160rpm in Second-over, again, one shift in the main box, and two electric-shifts; totaling four good ratios
with splits of .. .78-.80-.78
I figure, that's pretty hard to beat;
Shifting at 5800 the Rs drop to ~4600, so the powerband needs to be just 1200 rpm and the 230* cam hits the marks nicely; altho, I liked the 223* cam better.
For those that might balk at the modest '78 ratio of the GVod, I offer this;
In routine shifting, as in getting up to hiway speed, I usually shift 1-2-3 and then GVod, and finally into Fourth-od. This gives me a short .78 Fourth and a long .71 Fifth.
In practice, the ratios are; 3.09-1.92-1.40-1.09-.78od
splits look like; .62-.73-.78-
.71 (This ratio is pretty close to most overdrive units, except the 200R4)
Down-shifting to pass someone doing 55, is a hoot!
55 in 4-od with 3.55s is ~1900rpm. Popping down to third gear, the Rs jump up to ~3400, where my HO367 has already got pretty good torque. But you know, Second gear will get me ~4700 , and the electric-shift is hot on it's heels. So if you see me going by you at 80 mph, the 3"pipes singing a happy song, just know that I'm still in Second gear; listen for the tires barking on the electric-shift into 2-od, lol. Ok nobody needed to know that. lol.
If I had a 440/727, in a stock wheel-well short wb Scamp;
I think I would just gear it for hiway, and stall it up a lil for take-off.
But if the take-off was still too soft, I'd put some decent pressure to it. Like 185 to 200 psi. Oh wait, I wouldda done that at the first, lol.
But I gotta say, the 200R4 is a pretty good option.
Clementine? You awake? Come-back ..... lol