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Then consider this: towing capacities provided in the owner manual are differentiated by manual and automatic transmissions. All automatic transmissions available for a specific application are rated the same.
Then consider this: towing capacities provided in the owner manual are differentiated by manual and automatic transmissions. All automatic transmissions available for a specific application are rated the same.
Towing capacities are rated as per the GCWR for that particular vehicles set up. Each Engine, suspension capacity, Transmission and ancillary items Trans PS cooler ect dictate the GCWR.
So no all auto trans are not automatically rated for same GCWR. If what your saying was the case then the there would be no tow packages on vehicles.
Thanks for responding but I'm looking for actual numbers not conjecture.
We know until 91 there was only the AOD for a 4 speed auto so this will be for vehicles 91 and older.
It did appear in the late '80s f250LD behind the 2 smaller motors but not the 351.
Yes but that isn't a truck. If you find one in a 351 truck it isn't factory.
The AOD was used behind the 351W in trucks pretty much all automatic late 80's Broncos had the AOD behind 4.9 302 and 351 last time I checked that was a truck.
It was also used in the E series behind the 351W
And there is no way the 275 Ftlbs is correct the 302 put out more torque than that in some applications with the AOD let alone late 80's EFI 351's that put out over 300 Ftlbs. Maybe you were looking at max HP instead of torque as that would make more sense.. The E40D slipped my mind and it was introduced in 89.
The max tow capacity of the 351W AOD in the Bronco's was 7800 LBS on a 8.8 Rear end no less.
And again NONE of that answers the question. Like I said I'm looking for actual numbers NOT conjecture....
....And again NONE of that answers the question. Like I said I'm looking for actual numbers NOT conjecture....
Yes, but when you say
Originally Posted by matthewq4b
.... irrespective of chassis, engine or rear gear ratio....
you are eliminating the possibility of actual numbers. You apparently know this because in another post you say
Originally Posted by matthewq4b
Towing capacities are rated as per the GCWR for that particular vehicles set up. Each Engine, suspension capacity, Transmission and ancillary items Trans PS cooler ect dictate the GCWR....
So how can anyone give you the answer you're looking for?
you are eliminating the possibility of actual numbers. You apparently know this because in another post you say
Seriously ? Rear axel ratio factors in to max tow rating. As does suspension and other items. Remove that from equation so it is not a limiting factor. Not sure what is so difficult to understand about that... it's not rocket science.
Originally Posted by Nothing Special
So how can anyone give you the answer you're looking for?
Easy just need the max tow rating the AOD was ever sepc'd for, again not rocket science. Hell ya'd think I was for someone to explain the intricacies
Quantum chromodynamics.
The *factory* AOD may well be limited to 275ft lbs, not the AO-Dominator or raptor or whatever made elsewhere.
but but but you say, so and so builds them to handle 600hp, while this may be true, the tranny rating is based on the lock down torque, meaning, the output shaft is welded to the side of an aircraft carrier. what can you input before it breaks internally. A 600hp engine, unless you found a 5000rpm stall converter, will not be imparting the torque at start. Once rolling, the resistance of the vehicle to prevent acceleration is not as great such that at any moment, future hp/torque is not a large gap from current hp torque when the engineers perform the integral math.
If there was an AOD behind a 351 in the 80's, and Im not saying there was or was not, before EFI, the 351 was a weak 150hp sister making 260-280ftlb. This was on par-ish with the bowtie 350 of the same time
The being said, IIRC the largest tow rating I ever saw for an AOD was 7600lb (or was it 7200?) with a 302/355 rear or 8600 (was it 8200?) with a 302 4.10 rear.
not sure why you want to know and what you have in mind, but towing big things requires big parts. The C6/E4OD were the HD trannys vs the C4/AOD just like chevy used the 400/4L80 vs the 350/700R4
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