GM unveils new 6.2 1/2t specs

[bdeboer]

I would be more excited if it came in the less expensive trims. LT with the All Star options.

 

[Peacock]

I would be more excited if it came in the less expensive trims. LT with the All Star options.

Yes. Typical GM means no regular cab or work truck with the big motor.

 

[Peacock]

Holy cow 11.5 compression on the 6.2, that is why it needs premium gas.

The Ford 6.2 is 9.8 IIRC.

That's the advantage of DI. They say it will run fine in 87, but premium is recommended. Not entirely different from the EcoBoost.

 

[deerefan]

That's the advantage of DI. They say it will run fine in 87, but premium is recommended. Not entirely different from the EcoBoost.

Wouldnt the overall power numbers be lower? I have a 327 in a Chevelle. Compression is 11:1 on the nose. With some timing adjustments, it will run on 87/89. Timing set "on kill", running 93 or higher, totally different. A huge difference. Will DI basically erase this?

 

[downsizingnow48]

I would like to be interested in this. But I bought a new GMC 3/4 ton 4WD in 1982. The dealer treated me so bad on fixing problems, I took a life-time ban on GM products that extends to all members of the immediate family. Traded the pickup to my brother in law for a building plot, put up a spec house, and made some money. So it ended OK but there are easier ways to build a house.

 

[deerefan]

I would like to be interested in this. But I bought a new GMC 3/4 ton 4WD in 1982. The dealer treated me so bad on fixing problems, I took a life-time ban on GM products that extends to all members of the immediate family. Traded the pickup to my brother in law for a building plot, put up a spec house, and made some money. So it ended OK but there are easier ways to build a house.

Thats a long time! A dealer wont push me from a brand, too many dealers to let one bad one keep me from a good product. Our local Ford dealer is terrible, but Ford still has products that interest me.

 

[Peacock]

Wouldnt the overall power numbers be lower? I have a 327 in a Chevelle. Compression is 11:1 on the nose. With some timing adjustments, it will run on 87/89. Timing set "on kill", running 93 or higher, totally different. A huge difference. Will DI basically erase this?

Probably. I'm sure the ECM takes full advantage of the higher octane.

I'd guess 5-10 hp and equal torque.

 

[deerefan]

Probably. I'm sure the ECM takes full advantage of the higher octane.

I'd guess 5-10 hp and equal torque.

The loss of power in the Chevelle is very noticeable, but we are also comparing 2 completely different technologies.

 

[Peacock]

Yes. This has direct injection and a very efficient combustion chamber.

 

[jejeosborne]

I would like to be interested in this. But I bought a new GMC 3/4 ton 4WD in 1982. The dealer treated me so bad on fixing problems, I took a life-time ban on GM products that extends to all members of the immediate family. Traded the pickup to my brother in law for a building plot, put up a spec house, and made some money. So it ended OK but there are easier ways to build a house.

1982! Really? That service tech is probably dead by now. If I banned every place I have bad experiences my selection would be minimal and I would be missing out on superior products and settling for less.