Turbo 616 powered Astro Van build
Turbo 616 powered Astro Van build
Interesting, thanks!
I will return to things like modding the pump after I get my gearing worked out.
I had thought on my RPO code for the van that i had a 3.73 diff, but after the test drive and sluggish first gear, I just went and verified at the axle tube and I actually have a FAS: 7.5", 3.23 open diff, which is way too low. The engine was originally mated with a 3.69 diff in the stock application, so im thinking a 3.73 would have been perfect, but a 4.10 would give me some nice low end torque for the heavier square body.
The manual trans ratios in the T5 im using are trans code 1352-201 which has really close gear ratios to the stock NA diesel gearboxes-
1-4.03
2-2.37
3-1.49
4-1.00
5-0.86
R-3.76
stock example MB trans gear ratios were-
1-3.90
2-2.30
3-1.41
4-1.00
R-3.66
the only ratios that are heavily off are the diff, 3.23 GM vs 3.69 MB.
If i convert to a 4.10 by swapping the ring and pinion, that should solve some of my sluggishness. If feels sort of if you are taking off in second for first gear as a comparison.