6hk1 isuzu in a 79 k20

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Old77

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not even sure why you'd wanna do this swap :think:
 

bucket

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I own one and although it would actual fit in the truck in question, it is indeed gutless. There seems to be no aftermarket tuners that offer box truck performance packages but maybe I just didn't google deeply enough? I learned a long time ago that the wheel doesn't need to be reinvented but not all of us got the memo.

GM 6500/7500? We haven't found anyone that can tune them either.
 

78C10BigTen

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What’s the Isuzu four cylinder ?
That’s in all the box trucks

Someone used to make a flywheel and motor mounts to put it in a Chevy
Speaking of gutless box trucks.... what engine is in a 2004 gmc savanna 3500 box van?? Whatever it is it MAJOR gutless.
 

Big Chip

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GM 6500/7500? We haven't found anyone that can tune them either.
I have a Chevy W3500/Isuzu NPR. It just depends on what dealer you ordered from. I wouldn't go the diesel route ever again though. I should have gotten the 6.0 in it.
 

bucket

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I have a Chevy W3500/Isuzu NPR. It just depends on what dealer you ordered from. I wouldn't go the diesel route ever again though. I should have gotten the 6.0 in it.

Ah see now. You have the 4 cyl version. Do you put much weight in it? I have to give the 7.8 some credit, because while it might be slow and guttless, it doesn't get much worse when you make it pull some weight around.
 

Big Chip

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Ah see now. You have the 4 cyl version. Do you put much weight in it? I have to give the 7.8 some credit, because while it might be slow and guttless, it doesn't get much worse when you make it pull some weight around.
I’m usually right at 12,000 pounds. It wasn’t any faster when it was new and empty though. Mine is the 5.2l with automatic.
 

blaizewedlake123

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I find it funny so many people are making fun of the idea but I was doing more research as you folks should do it will fit if i cut the firewall [emoji2369]

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CSFJ

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yup, I did some research too. My cousins brothers, girlfriends dads uncle said this would fit into my chevette if I move the firewall back a couple inches. I can't wait! it'll be so ******* unique!!!!!
 

Big Chip

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I find it funny so many people are making fun of the idea but I was doing more research as you folks should do it will fit if i cut the firewall [emoji2369]

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I think you should give it a shot.
 

blaizewedlake123

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I think you should give it a shot.
You're literally the only person that agrees, my brother has a 69 k20 and hes putting a cummins in his and I wanted something unique in mine, I was thinking about a Detroit but doesnt have as much power output as the 6h

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