Why is it that a Fleetwood with towing option is rated at 7000lbs, and the Roadmaster with the towing option is rated only at 5000lbs? The Fleetwood is around 300 lbs heavier to begin with.
What components allow for a higher rating on the Fleetwood? Is it because the rear-end and the transmission are more stout on a Fleetwood?
V4P Fleetwoods had 3.42, a 4L60E built to a 'towing' spec, and shift tables and line pressures written specifically for towing, to the detriment of MpGs.
They were rated at 15 City, 23 HiWay, and certified to tow 7000lbs.
[The Fleetwood's longer wheelbase may have something to do with it.]
V92 Caprices and Roadmasters had 2.93, a 'standard-spec' 4L60E, and shift tables and line pressures written for MpGs to the detriment of towing, thus an advisory to put the shifter in 'D' if needed to avoid 3-4 hunt-shifting.
They were rated at 17 City, 25 HiWay, and certified to tow 5000lbs.
Fleetwoods with 2.93 had a 'standard-spec' 4L60E, and shift tables and line pressures identical to V92 B-cars, yet were only rated to tow 3000lbs.
9C1 Caprices with LT1s had 3.08, a 4L60E built to a 'pursuit' spec, and unique shift tables and line pressures accounting for both MpGs at low throttle angles and the likelihood of pursuits.
I suspect their ratings were 17 City, 25 HiWay, and 3000lbs[, but I can't be sure].
Don't know about B-cars with 2.56 or L99 …
I am pretty sure it is 5000 for LT1 9C1s, and the owner's manual says to tow in D.
A 9C1 Caprice owner's manual would be a precious [comm]oddity …
While 3.08 is always better than 2.93 for these cars, I was under the IMPRESSION that the lack of a [email protected]
$$ mech fan was the formal technicality that prevented the 9C1 from a tow rating of 5000lbs?
No matter, I'd rather tow with a 9C1 with electrical fans, than a V92 with a mech fan any day.