have a rtlo16618a anybody know what the overdrive ratio is truck has 3.42 rears tall 24's runs 1700 at 70 seams like that alittle high on the rpm
tran ratio
Discussion in 'Trucks [ Eighteen Wheelers ]' started by little cat 500, Mar 19, 2013.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
little cat 500 Thanks this.
-
The top gear ratio is .86 from what I have found, a double-overdrive would be 73.
It's been too long and I didn't run 1 long enough, but I'd say it might be a higher ratio rear gear. -
My '88 T600 had a single over 18 with 3.36s and low pro 24.5s. Topped out at 96 mph at 2150 rpm.
-
ok thanks ill have to swap out the trans
-
Why? That transmission is more effiecient than a double over. Besides, a double over at .73 to 1, isn't going to gain that much speed and your engine will work harder, to do the same job.
-
want to get rid of the tall rubber if i go with low 24's it will rev way to high plus the tall rubber is heavy and pricey
-
It was the best thing I ever did was switching to a .73 top gear. My RPM dropped from 1800 to 1500's at 70mph. Motors not turning as fast and gives me a piece of mind.
-
If I felt that need for speed, which I do not, I would be turning ball park 100 mph at 1600 rpm on low pro rubber in the top hole with this. Not really sure how fast it would go. The engine tops out at 2100 rpm. -
For an everyday door swinger you might be right but would be smarter to stick with a 10 direct, less parts turning.
Personally I'll go with a OD trans with 3.70/3.58 rear so I can use first gear to take off instead of some 2.something entirely too high gear an suffer on take off. a lot of people don't realize this until its too late!
Cowpies truck is good for highway use and it works for him. Like he said, it won't work for everyone.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.