D350 Rear Ratio?

What was the standard gear ratio in a 88 D350 powered by a 360??

What gear?
Axle?
First gear of the trans? 727 or 4 speed? 4 Speed with granny low?

The dreaded 4:10.


Here's a good deal on some 3:54s....
https://easttexas.craigslist.org/pts/d/1993-dodge-diesel-ring-and/6684182157.html

My 88 360-4v/435 truck was a 4.56 but it was a c/c

The reason for my question is that I'm going to look at an 88 this weekend and if it's nice enuff I may buy it. My only experience is more than 20 yrs ago I had a 85 D350 with a 360 and it was an extremely strong combo. That old truck had been used up as a wrecker and was in terrible shape except for the running gear. My son used in it calif to tow his race car to LACR and there were none of his friends 454 Chev duallies that could keep up with him going up the grapevine. The thing was great for a 360. I hope this one I'm going to look at will be close in performance.

Probably a 4.10 as 3.54 would be the only other gear offered. There should be a data sheet affixed to the underside of the hood.

there were three ratios available, 4.10, 4.56 and 4.88. none were "standard" there should be a label on the hood that will tell you what ratio came with the truck, also there is a tag in the diff cover.

That would be correct for the 89 and up trucks but the 3.54 wasn't available in the 1 tons until 89. Or until the cummins came out.

OK, I stand corrected. My 84 crew cab dually has 4.10's, but I am sure they were changed at some point.

^^^This info came direct from a 1986 Dodge Service manual^^^ All ratios were spec'd by Eng/trans combo.
Wait this just in...found my '92 service manual!
First just for clarity... all specs below are for D350 DRW and a Dana 70.
The gear options in '92 were...3.54, 4.1 and 4.56
This is due to the 46RH OD trans.
89-91 (non intercooled) had 3.07 with the 727 only and 3.54 & 4.10's with manual trans.
All the above information is supported by the Chrysler service manuals for the given year stated.