Would I feel a difference

[LONGHAIR]

Originally Posted by LEEVON

Get this, my last '87 came from the factory as a 305 with TH375 (TH400 w/ TH350 tailshaft) and 2.41 rear gears. Honestly it was great to drive, I really enjoyed the highway cruising. I swapped a 700R4 and 3:73 posi rear and actually regretted it.

2.41 with 1-1= 2.41
3.73 with .7-1=2.61

I would think that the lower first gear would be better and the final drive isn't that much lower? You really regretted the swap? Because of the cost w/o much change?

[INSIDIOUS '86]

Originally Posted by LONGHAIR

2.41 with 1-1= 2.41
3.73 with .7-1=2.61

I would think that the lower first gear would be better and the final drive isn't that much lower? You really regretted the swap? Because of the cost w/o much change?

What tire size is that based off of just for the sake of a more accurate idea of what gearing would be.
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[LEEVON]

Originally Posted by LONGHAIR

2.41 with 1-1= 2.41
3.73 with .7-1=2.61

I would think that the lower first gear would be better and the final drive isn't that much lower? You really regretted the swap? Because of the cost w/o much change?

Mainly because of the time and expense it took to swap, when the original combo was pretty tolerable. The first 700 burned up (used) so I bought a nicer unit then much time and money into it for a driver. Then I sold truck...so not worth the effort.

Otherwise the last 8, 10? or so trucks I've had were 700R4 (or 4L60e) with 3:23, 3:42 or 3:73 on 28-29" tires.

[Skunksmash]

Well how bout this. I want to do 85 mph, at 1,900 RPM. On 29 inch tall tires, with a .70 final gear in my 700R4 transmission. That should dictate what rear end gears I should get.