'90 3500 454 4X4 4:10s Fuel Mileage? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PsRumors · 07-11-2006, 01:28 PM

I am looking at a 1990 3500 Dually 4x4 700r4 4:10 gears. What are realistic fuel mileage expectations? Will 14 on the road empty at 70mph be a far stretch or are we looking in the single digits?

Techy · 07-11-2006, 03:15 PM

Probably 6-9, those 454's like to eat gas. ;o

MASiefert · 07-13-2006, 05:07 PM

My 85 454 2WD gets about 10.... That's the reason I can't get rid of it!

MAS
85 GMC Suburban 2500

screwballl · 07-20-2006, 05:49 PM

my 91 R2500 with 454 gets around 10-12mpg on the highway with 170K miles, 10 in town. you may get about the same or better if that 700r4 had Overdrive, otherwise closer to 10 is realistic. Mine has the 4L80E tranny with O/D so it does decent on the highway... feels liek it floats along nicely

89 crew · 07-20-2006, 09:14 PM

I know an 88 gmc 3/4 tbi 454, 400, 4.11 4x2 that got 14mpg with a 4'x15' culvert in the bed on a 200 mile trip, and 16 on the way back. My brother's 98 k2500 with port injected 454 and 4l80 gets 12 empty and tuned up and 10 if it isn't. It got 8 from Chicago back to Kansas city with 2 early 70's buicks on the trailer behind him.

**special-K** · 07-21-2006, 08:46 AM

Is this`90 a dual or single wheel?Does it actually have an 700r4?I didn`t think they came with that trans from factory.Should be a 4L80E.Is this the new-style`90 or old-style?You didn`t mention cab type.I know the older style didn`t get o/d until`91(if it`s a 3+3).

**special-K** · 07-21-2006, 08:48 AM

Is this`90 a dual or single wheel?Does it actually have an 700r4?I didn`t think they came with that trans from factory.Should be a 4L80E.Is this the new-style`90 or old-style?You didn`t mention cab type.I know the older style didn`t get o/d until`91(if it`s a 3+3).Hey wait,I just saw this is the Suburban section,now I`m

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07-11-2006, 01:28 PM	#1
PsRumors Registered User Join Date: Sep 2003 Location: Cartersville, Georgia Posts: 53	'90 3500 454 4X4 4:10s Fuel Mileage? I am looking at a 1990 3500 Dually 4x4 700r4 4:10 gears. What are realistic fuel mileage expectations? Will 14 on the road empty at 70mph be a far stretch or are we looking in the single digits? __________________ '85 K20 Suburban

07-11-2006, 03:15 PM	#2
Techy Registered User Join Date: Apr 2005 Location: East Orange County, FL Posts: 32	Re: '90 3500 454 4X4 4:10s Fuel Mileage? Probably 6-9, those 454's like to eat gas. ;o __________________ No Truck for me yet, Still Looking.

07-13-2006, 05:07 PM	#3
MASiefert Registered User Join Date: Jul 2004 Location: Dayton, Ohio Posts: 36	Re: '90 3500 454 4X4 4:10s Fuel Mileage? My 85 454 2WD gets about 10.... That's the reason I can't get rid of it! MAS 85 GMC Suburban 2500

07-20-2006, 05:49 PM	#4
screwballl Tonawanda 454 Join Date: Mar 2004 Location: Liquid Sunshine State Posts: 2,755	Re: '90 3500 454 4X4 4:10s Fuel Mileage? my 91 R2500 with 454 gets around 10-12mpg on the highway with 170K miles, 10 in town. you may get about the same or better if that 700r4 had Overdrive, otherwise closer to 10 is realistic. Mine has the 4L80E tranny with O/D so it does decent on the highway... feels liek it floats along nicely __________________ 91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! 04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. -------------------

07-20-2006, 09:14 PM	#5
89 crew Registered User Join Date: Mar 2006 Location: Kansas Posts: 865	Re: '90 3500 454 4X4 4:10s Fuel Mileage? I know an 88 gmc 3/4 tbi 454, 400, 4.11 4x2 that got 14mpg with a 4'x15' culvert in the bed on a 200 mile trip, and 16 on the way back. My brother's 98 k2500 with port injected 454 and 4l80 gets 12 empty and tuned up and 10 if it isn't. It got 8 from Chicago back to Kansas city with 2 early 70's buicks on the trailer behind him.

07-21-2006, 08:46 AM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: '90 3500 454 4X4 4:10s Fuel Mileage? Is this`90 a dual or single wheel?Does it actually have an 700r4?I didn`t think they came with that trans from factory.Should be a 4L80E.Is this the new-style`90 or old-style?You didn`t mention cab type.I know the older style didn`t get o/d until`91(if it`s a 3+3). __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

07-21-2006, 08:48 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: '90 3500 454 4X4 4:10s Fuel Mileage? Is this`90 a dual or single wheel?Does it actually have an 700r4?I didn`t think they came with that trans from factory.Should be a 4L80E.Is this the new-style`90 or old-style?You didn`t mention cab type.I know the older style didn`t get o/d until`91(if it`s a 3+3).Hey wait,I just saw this is the Suburban section,now I`m. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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