GM/Chevy Is Coming Out With A New 6.6 Ltr/ V-8

[bagman]

And it will be the standard engine in the Chevy Cutaway RV chassis. Just very curious if GM/Chevy will upgrade the GVWR so that Chevy can compete with the larger Class C's, which presently FORD dominated that particular segment. The new 6.6 V-8 will make 401 HP & 464 ft. lbs. of Torque. Bags

[carringb]

FireGuard wrote:
That would make a sporty drive train for a 25’ class C, but like carringb said I wonder if it will be derrated like the Ford.

Note: The new 7.3L V8 is not "de-rated", which implies power output has been reduced. That WAS the case for both the 6.7L diesel and the V10 in the F-series, with the diesel having some different parts even. But Ford has made it clear that the 7.3L uses the same programming across the board, and that was part of the rational for introducing the motor. This means a 350hp rated E450 (or F53/59 or F450/550/600/650/750) actually outputs the same power as the 430hp F250/350. It's just tested differently (worst case vs best case essentially).

Whether the new GM 6.6L gas motor can meet the current MDT Greenhouse Gas restrictions, without detuning, is TBD. But even if they can maintain the same programming across the board, the 14,200 chassis will have a lower number published since it will also requires the dyno certification being over 14,000 GVW. Current 6.0 and the outgoing V10 maintained the former chassis certifications because they were carryover powertrains. Or GM could simply revised the chassis to 14,000 and then could still publish the higher chassis-cert number. So... we'll have to wait and see. At least the true body-on-frame cutaway segment is still getting better!

[FireGuard]

That would make a sporty drive train for a 25’ class C, but like carringb said I wonder if it will be derrated like the Ford.
Also, I wonder how long it will be before we start seeing the new Powertrains in RVs?
Manufacturers may have a good supply of older chasis waiting to be built on.

[carringb]

pnichols wrote:

bagman wrote:
And it will be the standard engine in the Chevy Cutaway RV chassis. Just very curious if GM/Chevy will upgrade the GVWR so that Chevy can compete with the larger Class C's, which presently FORD dominated that particular segment. The new 6.6 V-8 will make 401 HP & 464 ft. lbs. of Torque. Bags

I assume what you mean by "Chevy Cutaway RV chassis" is the chassis under their good old 3500 and 4500 series delivery van chassis?

If so ... isn't the Chevy 4500 cutaway chassis used under RVs about equal in GVWR to the more popular good old Ford E450 cutaway van chassis used under RVs?

I've always figured that the Chevy 4500 about equaled the Ford E450.

While the Chevy Express 4500 comes close, the lower FAWR (4600 vs 5,000 Ford) limits the longest wheelbases, so anything longer than 28' is Ford only since those usually get a 220-223" wheelbase. Chevy chassis are typically only stretched to 208" max.

Also, the 401 hp figure is likely chassis-rated. The Ford 7.3L is in sub-14,000 flavor is chassis rated at 430 hp but the MDT dyno certification is 350 hp. Ford says they maintain the same programming, and only the test methods differ. So buys should be aware of these rating changes in the new MDT motors.

[pnichols]

bagman wrote:
And it will be the standard engine in the Chevy Cutaway RV chassis. Just very curious if GM/Chevy will upgrade the GVWR so that Chevy can compete with the larger Class C's, which presently FORD dominated that particular segment. The new 6.6 V-8 will make 401 HP & 464 ft. lbs. of Torque. Bags

I assume what you mean by "Chevy Cutaway RV chassis" is the chassis under their good old 3500 and 4500 series delivery van chassis?

If so ... isn't the Chevy 4500 cutaway chassis used under RVs about equal in GVWR to the more popular good old Ford E450 cutaway van chassis used under RVs?

I've always figured that the Chevy 4500 about equaled the Ford E450.

[Dick_B]

Would it get better than 6 mpg towing 7500 lbs against the wind like my present 6.0 L Suburban?

[Lwiddis]

Using this engine for RV chassis vans was a certainty IMO.
If Chevy’s sales/marketing team thinks they can earn a profit competing with Ford, yes.