GMI Engine/Transmission Guides Updated

[nsap]

GMI Engine/Transmission Guides Updated

I've updated the engine and transmission guides. The transmission guide now includes the maximum gearbox torque and weight of the transmission.

Also note that the 6T70 transmission says it has an engine range of 3.6L-4.0L. This straight from GM. And if I recall, the 3.6L HF V6 is capable of being bored to a 4.0L. Hmmm... I think GM slipped on their transmission information. Another interesting thing...the 6T75 transmission (used on the Lambda's) has an engine range of 3.6L-4.6L. The Lambda's are said to get the 4.6L Ultra V8 soon.

Anyway...

GMI Transmission Guide

GMI Engine Guide

[bowtie]

gm used to build a car around the drive train, and now i dont see this happening on all cars. not having the best engines and traniees in every car and truck is a real pain for me!!! now i like style and the interior is a major selling point of a car or truck these days but i have never refused to buy a car or truck because of the interior. i only owned gm and i intend to keep it that way. but i have refused to buy a car or truck based on what engine and tranny that was offered!!!

[plane]

nsap,

Thanks again and again for the best GM engine and transmission resource on the net.

After reading the engine descriptions, it seems like some 2007 housecleaning may be in order?
How many different locations really need to produce identical or very, very similar engines?
Does GM really need the 3.8L at this point? Or the 4.3L? Or others?
Why does GM need a half a dozen manufacturing sites or more to produce so many different engines?
What costs would be saved if engine manufacturing was consolidated or more concentrated, at places like Towanda, St. Catherines, or Silao?
What would the cost structure look like with only 1/2 or 2/3 the number of engines currently produced? More competitive, fully featured, higher quality engines at a lower cost?

[Buick61]

Ooo, the torque rating is a nice addition

[DuSpinnst]

The 4.6L Ultra V8 will also be the "smallest" of the Ultra's, well of the NA Ultra's.

[W.A.F.U.]

On the Aisen unit in the Sky/Solstice, shouldn't the engine range start at 2.4 not 2.8?

[asim]

Thanks nsap, these guides are really helpful to the GMi community (and take a bit of work to put together).

[superstreet]

thanks

[LAMRONH]

Thank you for doing this somethimes thankless task. Good work.

Your check is in the mail.

[CadillacCTS]

You forgot to add the Pontiac Torrent GXP and Equinox Sport to the FWD six speed automatic (6T70)

[GM LS-X]

You are still missing the LC9 Truck engine.Which is the all aluminum version of the LY5.

[motorman]

the duramax has 4 valves per cylinder

[redimpss5]

I love the engine guide! I have been looking at it for years and I am so glad it is there.

[chadbarb99]

All fine and dandy, but when is the future product guides going to be updated, January 16, 2007 was a long time ago?

[Z06ified]

Another suggested update:

The Duramax diesel is also available in the Express vans now.

Also, since there are future/upcoming engines on that list, should there be mention of the new smaller V-8 turbo diesel that GM is working on for the 2009 model trucks and SUV's?

The one thing that struck me reading through that list is GM still has WAY too many different engine types. They need to consolidate big time, the way Nissan has. Have 2 or 3 4-cylinder models (Ecotec 2.0 and 2.4), one or two V-6 engines (like the 2.8 and 3.6) and two V-8 engine architectures (pushrod V-8 and DOHC V-8). Each engine type should share similar architecture, and maybe even the same displacement, just in different states of tune for a particular application ( such as the Nissan 3.5L V-6 is used in everything from Altimas to Pathfinder to Infiniti, just with different tuning).

There is no reason to have engines such as the 3.4L, 3.5L, 3.8L, 3.9L, and 4.3L pushrods. Most of these are ANCIENT designs that should have been retired long ago. The 3.6L DOHC V-6 could easily replace all of those engines (and several of the smaller pushrod V-8s), in various states of tune, while being a more competitive and better engine. Although the 3.6 costs more to produce than the old pushrods in component cost, it can be produced more efficiently in volume, and it generally costs much less to produce one engine type in one or two plants than to produce five engine types in five plants.