Three-on-the-Tree with 273 4/bbl?
with the nearly invisible change to 4spd plus Gear Vendor OD, 8spd.
Splitting gears on a
Regular A833 is Not a hoot, because getting out of the split and back into the main, the gears are too tight to eachother. Here's what I mean, splits in red;
2.66-
2.07-1.92-
1.50-1.40-
1.09-1.00-
.78od Notice 1.50/1.40, and 1.09/1.00
---
.78---.93---
.78 --.93---
.78--.92---
.78
shifting at 5500, that .93 split drops the Rs just 385rpm
There is only one trans that is half-way decent, namely the A833 od
3.09-
2.41-1.67-
1.30-1.00-
.78-.57 and splits of;
---
.78---.69--.
78---.77--
.78--.73, but now you are pretty much married to splitting, cuz, the regular gears,
3.09--1.67--1.00-.73 are quite far apart, and over time you will grow to hate it.
----.54---.60---.73 Well, I hated it and got rid of it.
The best box to use is the Commando
3.09-
2.41-1.92-
1.30/1.40-
1.09/1.00--
.78od
----.78--.77--.78..
You still have 1.30/1.40 and 1.09/1.00 issues, where you choose one or the other depending on circumstances, but how you shift it, normally, is this;
3.09-1.92-1.40-1.09-.72; except if in a hurry then
3.09-2.41-1.92-1.50------1.09-.78od
----.78---.80.--.78------.73-----.72
1.50 ratio with 3.55s will get you 90mph at 6000.
The starter with 3.55s is 10.97 about the same as 4.10s with a 2.66low box.
65mph=2040rpm in .78od
Caution;
When you use the GVod as splitter, you have to bypass the control module, else it shifts waaaaay too slow. But without the module you have to make 100% sure to NEVER back up with the unit engaged, because just a few inches in reverse will wreck it. So then, it is up to you to figure out how to protect that GV unit.
Furthermore,
the GVod pump gets it's power from the spinning driveshaft. It needs a minimum driveshaft rpm to accumulate enough pressure to make a shift. With 4.56s no problem. with 3.23s you're looking at about 25/30mph, for the initial charge. But it only holds that pressure for a minute or so; so if you stop at a light, you gotta charge it up again.
I have that Commando/GVod Combo in my car; it's very flexible. I have a stout-367 so only rarely split gears. I run the blue pattern.
And yes, I broke it one time, backing up.
Jus saying.
