Need better fuel mileage

[4WDKC]

I was thinking the 4.2 in a Nova or a 4 door chevelle would get alot better mileage and be baout a stout as the stock low hp 350 they came with.

 

[87silveradok20]

I wish I got 10. I have an 89 3+3 and I’ve only got 10 on one tank ever and that’s was on the highway. I average around 8. That’s with a 350 and 265/75/16


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[Honky Kong jr]

I wish I got 10. I have an 89 3+3 and I’ve only got 10 on one tank ever and that’s was on the highway. I average around 8. That’s with a 350 and 265/75/16


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With a dually count your blessings your getting that. Lol

 

[bucket]

The term "go big or go home" applies here I think.

 

[Honky Kong jr]

The term "go big or go home" applies here I think.

Pretty much. Gotta pay to play.

 

[4WDKC]

I wish I got 10. I have an 89 3+3 and I’ve only got 10 on one tank ever and that’s was on the highway. I average around 8. That’s with a 350 and 265/75/16


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At that point you would probably get better mpg with a correctly tuned 454

 

[yevgenievich]

At that point you would probably get better mpg with a correctly tuned 454

I would agree on that one.
Best mpg from a an older one ton that I have been able to get was 17mpg. 454 vortec and nv4500

 

[4WDKC]

I would agree on that one.
Best mpg from a an older one ton that I have been able to get was 17mpg. 454 vortec and nv4500

got pics/build thread? collecting parts for my vortec 454 4l80 swap into my 1/2 ton with 3/4 axles and springs.

 

[Jrgunn5150]

I would agree on that one.
Best mpg from a an older one ton that I have been able to get was 17mpg. 454 vortec and nv4500

It seems I'm up to 14 mpg with my 496 now after tuning, I need to work on it some more, shift points are a bit high.

 

[yevgenievich]

got pics/build thread? collecting parts for my vortec 454 4l80 swap into my 1/2 ton with 3/4 axles and springs.

I have cheated heavily, it was just a stock 97 crew one ton 2wd.

You must be registered for see images attach

 

[4WDKC]

I have cheated heavily, it was just a stock 97 crew one ton 2wd.

You must be registered for see images attach

damn got me thinking I was going to get some pointers on the swap.

 

[Rusty Nail]

*yawn*

 

[roundhouse]

I have an Chevy w3500 (Isuzu NPR) that has a 5.2 liter- 4 cylinder diesel. I think that would fit pretty well in an old pickup. You wouldn’t make 1000 horsepower but I bet the mileage would be pretty good.


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Some place was selling
Motor mounts and flywheel and bell housing adapters to put it in a pickup

 

[Big Chip]

Some place was selling
Motor mounts and flywheel and bell housing adapters to put it in a pickup

It seems to be a pretty decent engine. I think I’ve put a couple hundred thousand miles on mine. Had a couple issues but I think they were just flukes.


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[Big Chip]

It seems to be a pretty decent engine. I think I’ve put a couple hundred thousand miles on mine. Had a couple issues but I think they were just flukes.


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I get about 10 mpg but I’m pushing a big box down the road. I never did buy the wind deflector for the top of the cab.


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