what gas engine? 2020 F350: 6.2 Gas or 7.3 L Gas? - Page 3 - Escape Trailer Owners Community

Go Back   Escape Trailer Owners Community > Escape Me | General Topics > Cyber Campfire
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 02-12-2019, 12:16 PM   #21
Senior Member
 
Join Date: Aug 2015
Location: los angeles, California
Trailer: 2017-21' Escape born Dec 28, 2016, Casita 17' (sold)
Posts: 1,212
Quote:
Originally Posted by John in Santa Cruz View Post
those ford 10 speeds sure look interesting. they /only/ use the torque converter to start from a stop, then they lock up, and stay locked up through all 10 closely spaced gears. the top three gears are overdrive ratios (>1.0). the overall gear range from 1 to 10 is no wider than 4-speeds were 15 years ago. let off on the throttle down a grade, and they downshift to provide engine braking. apply the brake, they downshift more.
good info. thanks for sharing!

been reading about them... just curious - may i ask where did you find this? Great info.

and.... i just read that the F350 will *all* come with the new 10 speed transmission... i can't even get the older 6 speed. Oh well... that decision is made for me. ;-)

J
__________________

Losangeles is offline   Reply With Quote
Old 02-12-2019, 04:46 PM   #22
Senior Member
 
John in Santa Cruz's Avatar
 
Join Date: Dec 2017
Location: Santa Cruz, California
Trailer: 2014 Escape 21
Posts: 908
Quote:
Originally Posted by Losangeles View Post
good info. thanks for sharing!

been reading about them... just curious - may i ask where did you find this? Great info.
various articles I've read, mostly.

step through his slide show, read all the captions. starts getting more into the tech about slide 5 or 6. https://www.caranddriver.com/feature...-transmission/
__________________

__________________
2014 Escape 21 (home away from home)
2002 Ford F250 7.3 Diesel 4x4 (tug)
1993 Mercedes 300CE Cabriolet (daily driver)
2006 Yellow Lab (Maggie!)
John in Santa Cruz is offline   Reply With Quote
Old 02-12-2019, 11:46 PM   #23
Senior Member
 
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 10,854
Quote:
Originally Posted by John in Santa Cruz View Post
step through his slide show, read all the captions. starts getting more into the tech about slide 5 or 6. https://www.caranddriver.com/feature...-transmission/
Good article. It does start off with a strange comment:
Quote:
We would expect that soon afterward, we will see this design spawn a family of 10-speed automatics that are smaller and lighter to suit less hunky rear-drive machines in the Ford and GM families.
I give up... what rear-drive machine is made by Ford or GM which has a less powerful engine than the Ranger? It's not as if they build the Pinto or Chevette any more. Unless the Ranger is already getting something lighter than the 10R80, I can't think of what they would use a lighter-duty version for. Yes, there are the less-powerful versions of the same cars that already have it (such as the Camaro... and the coming Explorer), but since those models need to fit the transmission to match their most powerful engine, there isn't a lot of benefit to fitting a lighter-duty version with only some engines. I think if anyone buys an Explorer to tow their trailer, they'll likely get the same 10R80 as a Ranger or F-150.

Quote:
Thanks to the use of four simple planetary gearsets, controlled by six clutches, the 10R80 is only about an inch longer and four pounds heavier than the 6F55 transmission
That's a strange comparison, since the 6F55 is a transverse transaxle, and lower capacity. The rational comparison is with a 6R80 transmission (such as from a pre-10-speed F-150), which is the same longitudinal configuration and has the same capacity (ability to handle engine torque). When comparing to the right predecessor, the difference is still small. To explain this, earlier Ford 4- or 6- speed transmissions use only two or three planetary gearsets, but they use more complex double planetary gears... the new design adds a couple of clutches to enable the use of a similar level of gear complexity (so a similar bulk of gearing) in more combinations.

The Ford/GM 10-speed is more like the ZF 8HP (found in Ram pickups) and GM 8L (found in GM pickups, Camaros, etc); all use similar configurations of four simple planetary gear sets, but the 10-speed has one more clutch to enable a couple more gear combinations... so it's not much bigger. Because Ford skipped the whole 8-speed era, it hasn't had this type of design before. None of these designs would have been practical without the computer systems now used to develop transmissions.
Brian B-P is offline   Reply With Quote
Old 02-14-2019, 04:01 AM   #24
Senior Member
 
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 10,854
I realize that the choice here is between engines in a 2020 F-350, but I think some information about the GM equivalent might provide some hints about Ford's new engine. The press introduction of the new GM engine is the reason for the somewhat premature (no power specs given) Ford announcement.

2020 Chevy Silverado HD 6.6L Gas V8 Small Block Deep Dive (Video)

Unlike Ford, GM is already building a modern pushrod V8, so their new engine HD pickups in 2020 (RPO code "L8T") is a variant of their "Gen5" (fifth generation) GM "small block". Although the name is small block, and it's more compact that the "big blocks" of the past, this size with 4.4 inch bore spacing is big enough for current production engines up to 7.0 litres (and larger as crate engines for racing). Although all current Gen5 engines have aluminum blocks, the new HD 6.6 has an iron block, like the Gen4 6.0 Vortec that it replaces.

Like other Gen5 engines, it has direct fuel injection.

The bore is 103.25 mm (4.06", same as the 6.2 L); the stroke is 98 mm (3.85", longer than the 3.62" of the 6.2 L, but not as long as the 4.125" of the Gen4 7.0 L).

The 6.6 L is rated for 401 horsepower at 5200 rpm, and 464 lb-ft of torque at 4000 rpm. This is similar peak torque and less power than the current 6.2 L in GM light-duty pickup trucks, but intended for sustained hard use in heavier vehicles. The 11% larger displacement of the Ford could allow it to put out a bit more power, but it will also likely produce it at slightly lower speed. The two engines are designed to compete directly with each other, and are similar in design (pushrod 2-valve-per-cylinder V8 with variable cam timing), so they should be comparable.

Of course, the GM marketing people for the Silverado call the engine "all new" , and indeed most of the parts will be specific to this version of the engine family; however, it is the Gen5 design, as explained by Mike Kociba (Assistant Chief Engineer for Small Block Engines at GM Engineering) in the video attached to the linked article.
__________________

Brian B-P is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Escape Trailer Industries or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 07:09 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.