new inline 6

Tahoepd · July 30, 2001

I was just wondering when the 4200 inline 6 will be in the 1500.

Also, I think some time ago some was asking what they thought about the Avalanche.

Well I have only seen two on the road (one white & one blue) I like the front view (the lights, grille & bumper/valance). I really didn't like the profile. The fenders are to squared off.

No offence to the Avalanche owners, just my 2 cents.

Stepside Z · July 30, 2001

#Moderation Mode

I would like to see an inline 6 in the full size trucks. I like the grunt of an inline 6. This topic belongs in the engine forum so I am going to move it.

Moved here

Charles · July 31, 2001

I would also like to see the inline 6 in a 1500. Just think of the room under the hood. Can you say "Turbo" or "Blower"?! I thought I saw a thing in AutoWeek that it will be offerd in the 2003 GMC's

gmcblu · July 31, 2001

I've heard a little about the new straight sixes, but y'all probably know more so here's some questions for you:

What kind of gas mileage do they expect compared to the 4.3L V6?

What are the HP and torque numbers for the Trailblazers w/ I6?

What is the block made of?

I also would like to know when I can get one in a pickup.

Charles · July 31, 2001

What kind of gas mileage do they expect compared to the 4.3L V6?

16 *Est* City, 21 *Est* Hwy

What are the HP and torque numbers for the Trailblazers w/ I6?

SAE Net Horsepower, 270 @ 6000

SAE Net Torque (lb ft), 275 @ 3600

What is the block made of?

Aluminum.

Is it OK to scan the HP/Torque chart from the brochure and post it here? It has a nice flat torque curve. The brochure claims 90% of peak torque is available from 1600 rpm to 5600 rpm.

gmcblu · July 31, 2001

I won't tell if you won't...j/k I don't think that's a problem. Thanks for the info I guess I coulda looked it up myself.

Pastmaster · July 31, 2001

My dealer told me that he read that possibly GM was planning to build a new V6 using the 4.8/5.3L block with 2 missing cylinders along with the 4200 I6 rumor.

Anyone heard anything about this?

Charles · August 1, 2001

Sounds reasonable. Basically replace the 4.3 with an engine that shares parts with the 4.8 & 5.3.

Pastmaster · August 2, 2001

It would be cheaper for GM, I would think. Since the old 4.3L had 55hp and 70ft/lbs of torque less, I would guess a V6 would have somewhere around 240-250hp and same torque as currently.

Zane · August 4, 2001

Quote: from Pastmaster on 7:50 pm on July 31, 2001
My dealer told me that he read that possibly GM was planning to build a new V6 using the 4.8/5.3L block with 2 missing cylinders along with the 4200 I6 rumor.

Anyone heard anything about this?

i know Gm has a new line of V6 engines coming out, but i'm not sure where they come from. One is a V6 with over 300 HP!!!!!

oxidizr · August 14, 2001

These are the specs for the "new" v6's GM is planning:

3.2L Turbo DOHC V-6, 321hp@5500rpm and 364lb-ft@2000rpm

3.8L DOHC V-6 251hp@6000rpm, 263lb-ft@3000rpm

3.2L Turbo DOHC V-6 253hp5500rpm, 261lb-ft@1750rpm

2.8L Turbo DOHC V-6 290hp@5500rpm, 297lb-ft@2000rpm

The primary developement of these motors were done for the new Caddy CTS.

Stepside Z · August 14, 2001

oxidizr,

Thanks for the info and welcome to the forum. Just watch out for that Newbie guy. :wink:

Kansas Kid · August 18, 2001

I wonder if the 4.2 Vortec I6 would even fit in the engine bay of a new Silverado? I looked at one in a Trailblazer, and it didn't appear all that big, but then again the Tralblazer was designed for a I6 motor. Ever wonder why Ford and GM don't have an I6 diesel motor in the 3/4 ton and up pickups? Its because the inline motor is too long for the engine bay, and still provide a reasonable sized radiator. Of course the Dodge is designed for the Cummins, so it fits in there.