it's all good.. discuss away.... 


I want to say I read somewhere that the Suburbans and Avalanches didnt have room for the Allison and had to stick with the '80e; maybe those 8.1's had more torque management to save the weaker transmission?

I towed a loaded hay wagon with 200 bales with an 8.1 and an Allison, and it didn't feel like it was there...

As far as the trans goes the 4500 shares the same problem as the good old 465 even the 6 speed dodges i have driiven have the same issue almost, you need another gear between the 1:1 ratio and the gear that precedes it.
So in my mind a gear vendors wins evertime over just about any trans swap.
You guys must use smaller balers out there then cause I bet any pickup would notice 20k pounds. Our smallest bales are 100 lb bales.
Like everyone has said the 8.1 seems pretty dang stout but you rarely hear bout anyone even getting into the 10s with mileage on em.
I have read tons about the cummins swaps a little about 8.1 swaps but it seems if you are buying x members to swap em in, it would really be about the same amount of effort. Just an observation

I've never towed in overdrive fully loaded now that I think of it.
I towed my trailer empty with is about 5100 pounds and it wasn't a big deal. Haven't been on the highway yet with my truck and trailer. I think I'll be fine, probably just have to rev to about 2400-2500 and it will drop down to about 1600. Which is fine for my diesel, not sure how the spread would be on a gas truck
ryoken;3122835 a quickie said:dude if you can get a solid 15 out of it color me impressed.
I am shooting for a solid 12 out of mine given past experiences not towing. I think I am shooting high. But if you can get 15 fuel injection just may be worth it

dude if you can get a solid 15 out of it color me impressed.
I am shooting for a solid 12 out of mine given past experiences not towing. I think I am shooting high. But if you can get 15 fuel injection just may be worth it
that's the thing about the 465, it practically lives in 3 and 4.... the only time I'm in second is a complete stop.. but your in 3rd pretty quick...
to be honest, I didn't notate what rpm's I was running at on the highway with the 4:10's and 33's at 65, I suspect it was around 2500.. I'll have to remember to spy that next time on the highway... too lazy to go look on a calculator...
a quickie, off the top of head guesstimate says I was getting around 12, 13 mpg... which, considering this motors issues and throwing an EGR code, I was fine with... if I can see a consistent 15 at some point, I'd be happy as a pig in poo.....



