454 engine

Knuck55

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Dec 18, 2018
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Location
Chesapeake Va
First Name
Dave
Truck Year
1988
Truck Model
Suburban V10
Engine Size
350
Greetings all,
Anyone here have any knowledge about what MPG I could expect from an 88 Suburban with a 454? It only has 34,000 original miles but the guy that owns it did not change the oil enough and pulled a large camper trailer and it has a knock which I determined to be a rod for sure. I have a chance to buy it for 5 K. It is a 3/4 ton with ZERO rust. Any help would be appreciated.
 

WZ7U

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Mar 17, 2022
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Location
Outer space
First Name
Eric
Truck Year
1979
Truck Model
C-20
Engine Size
454
Maybe in the 12mpg range if you stay out of it, assuming everything else is good. That might be a bit generous too. It's not going to go easy on the wallet regardless. :cool:
 

85K304SPD

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Location
Las Cruces, NM
First Name
Richard
Truck Year
1985
Truck Model
K30
Engine Size
383
Is it 2 or 4 wheel drive? Just curious. The best I can get out of my 383 is 10 MPG.
 

shanegtr

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Location
Perth, Australia
First Name
Shane
Truck Year
1989
Truck Model
R2500 Suburban
Engine Size
454
11MPG from my 454 TBI
 

bucket

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Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Anywhere from 10 to 13mpg. Depending on the tune, gearing, and ride height.
 

Knuck55

Junior Member
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Dec 18, 2018
Posts
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Location
Chesapeake Va
First Name
Dave
Truck Year
1988
Truck Model
Suburban V10
Engine Size
350
Thanks to all. I can live with that. I did end up with the burb and will be making sure of the knocking noise before I go pulling the motor. I have had loose converter bolts fool me more than once! Best score of my life though on this body!
 

Knuck55

Junior Member
Joined
Dec 18, 2018
Posts
9
Reaction score
4
Location
Chesapeake Va
First Name
Dave
Truck Year
1988
Truck Model
Suburban V10
Engine Size
350
Is it 2 or 4 wheel drive? Just curious. The best I can get out of my 383 is 10 MPG.
2 WD but I have a complete 4WD drive train in my back yard... It may just find its way under this 3/4 ton. Will leave the 14 bolt in the rear.
 

78C10BigTen

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Location
pennsylvannia
First Name
Ted
Truck Year
1978
Truck Model
C10 BIG TEN
Engine Size
350
Thanks to all. I can live with that. I did end up with the burb and will be making sure of the knocking noise before I go pulling the motor. I have had loose converter bolts fool me more than once! Best score of my life though on this body!
Well then i think pics are in order! Lol
 

Knuck55

Junior Member
Joined
Dec 18, 2018
Posts
9
Reaction score
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Location
Chesapeake Va
First Name
Dave
Truck Year
1988
Truck Model
Suburban V10
Engine Size
350
They be coming soon! Both my burbs now. It was the converter bolt by the way. Dont have to pull the big ass motor out!
 

IdahoJOAT

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Location
Idaho
First Name
Rodger
Truck Year
1984
Truck Model
K20
Engine Size
350
What gearing is it? On what size tires?
 

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