GM 6.6gas in a 2019 Tahoe?

[SparkyLisle]

Have a 2019 Tahoe LT with the 5.3, and was wondering if a swap to the 6.6gas has been done.

 

[Joseph Garcia]

"wondering if a swap to the 6.6gas has been done" ???

 

[Jeff_]

6.6 gas?
You mean the isuzu motor which is a 6.6 duramax diesel?
I believe there are a few companies out there that have done duramax swaps on the k2xx but you'd be spending a lot of money and getting something only somewhat reliable I'd imagine.

Now, if you meant to say 6.0 or 6.2 swap, then that's more common as many of the parts are the same with the 5.3

 

[SparkyLisle]

6.6 gas?
You mean the isuzu motor which is a 6.6 duramax diesel?
I believe there are a few companies out there that have done duramax swaps on the k2xx but you'd be spending a lot of money and getting something only somewhat reliable I'd imagine.

Now, if you meant to say 6.0 or 6.2 swap, then that's more common as many of the parts are the same with the 5.3

No, the GM 6.6 gas engine that replaced the 6.0.

 

[Jeff_]

No, the GM 6.6 gas engine that replaced the 6.0.

Gotcha, I didn't see that the new 3/4 trucks had a 6.6 gas motor.
Looks like it makes less power than the 6.2l

 

[Tiki]

Gotcha, I didn't see that the new 3/4 trucks had a 6.6 gas motor.
Looks like it makes less power than the 6.2l

But has no mumbo jumbo AFM/DOD

 

[SparkyLisle]

But has no mumbo jumbo AFM/DOD

And it's lower compression so it will use regular gas.

 

[THarber]

I don't think you would be gaining much going the 6.6l right right now. You would be miles ahead using the 6.6 crank with matching rods and pistons and the 6.2 block. the 6.6 has some funky exhaust ports and I doubt highly that anyone is making any retrofit headers today. The flywheel would also have to be different. Now if you can find a complete pull out with harness, transmission, etc the whole 9 yards it ight make for fun swap. Its not going to have the high end HP of a 6.2 but down low its a beast.

 

[SparkyLisle]

I don't think you would be gaining much going the 6.6l right right now. You would be miles ahead using the 6.6 crank with matching rods and pistons and the 6.2 block. the 6.6 has some funky exhaust ports and I doubt highly that anyone is making any retrofit headers today. The flywheel would also have to be different. Now if you can find a complete pull out with harness, transmission, etc the whole 9 yards it ight make for fun swap. Its not going to have the high end HP of a 6.2 but down low its a beast.

Good information, guess I'll put in 3.73 gears, and make do with the 5.3.

 

[RB_Trucker]

The 6.6 gas would be an excellent tow pig option for the Suburbans, low end torque no DOD/AFM most likely E85 compatible and comes with the 6L90/HD transfer case. It’s an LT architecture also so programming and figment won’t be such an issue.