Chevy to Cummins conversion

[LomitaBob]

I want to put a cummins 6 cyl in my 03 chevy hd with a 6.0. I know screamin seemen sells the mount kits but does anyone have any experience with this type of conversion

sent from the EVO

 

[Riverbottom]

I've had a Duramax GMC and a Dodge Cummins both were great trucks. I would think you would want to start with a Duramax truck and not a 6.0 vehicle. Registration and smog would seem impossible with that Vin and paperwork.

 

[dancudmore]

I want to put a cummins 6 cyl in my 03 chevy hd with a 6.0. I know screamin seemen sells the mount kits but does anyone have any experience with this type of conversion

sent from the EVO

You will be thousands ahead if you just sell your gasser and buy a diesel...


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[Yellowboat]

You will be thousands ahead if you just sell your gasser and buy a diesel...


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not to mention have a bunch more hair.


Assuming you could get a referee station to sign off on the sawp, you would still have to swap out/mod every system in the truck.

 

[LomitaBob]

I know its alot of work but it will also be badass
sent from the EVO

 

[LomitaBob]

And my truck is registered in Az,
No smog
sent from the EVO

 

[bonesfab]

I did one in a earlier chevy k30 and love it. You can get a round the smog issue. I replaced a blown and injected 502. More torque more power and runs cooler. It is my daily driver.. :thumbsup

 

[scottietwohoty]

I did one in a earlier chevy k30 and love it. You can get a round the smog issue. I replaced a blown and injected 502. More torque more power and runs cooler. It is my daily driver.. :thumbsup

:worthless_1_:

 

[Tom Brown]

I think you should swap out that drive train for the Cummins mill, drive it for a few months, and then finish the job by swapping out the frame, rear end, body, and interior to Dodge truck pieces.

 

[rivermobster]

whats gonna be bad azz about it??

just get a ford with a 7.3 and youll have a real truck.

 

[bonesfab]

I didn't have pics on my Ipad..

 

[Baja Big Dog]

whats gonna be bad azz about it??

just get a ford with a 7.3 and youll have a real truck.

Fukkin perfect!!!:thumbsup

 

[Baja Big Dog]

Some may ask, why the hell would you do that.....well if your stuck with an 03 Chebby, this would be a major improvement....

Think of the glove box space you would free up by not having to carry around an extra set of injectors!!!

 

[dancudmore]

Some may ask, why the hell would you do that.....well if your stuck with an 03 Chebby, this would be a major improvement....

Think of the glove box space you would free up by not having to carry around an extra set of injectors!!!

he's got a 6.0 gasser, no extra injectors required

 

[HolyMoly]

whats gonna be bad azz about it??

just get a ford with a 7.3 and youll have a real truck.

I resemble that remark!! 7.3 + Banks

 

[NicPaus]

Some may ask, why the hell would you do that.....well if your stuck with an 03 Chebby, this would be a major improvement....

Think of the glove box space you would free up by not having to carry around an extra set of injectors!!!

Its a 6.0 gas no injector issue like early D-Max. I dont see much improvement I just bought a 06 6.0 gasser and not a hell of a difference between my 06 D-Max unless I am towing over 12,000 lbs. Towed the dump trailer at 11,000 + last week 17,000 + overall and it did it no problem. Unless Bob has a 25-30' boat and plans on towing back and forth for 50-60,000 miles the swap will not payoff on fuel saved. Gas is 50 cents cheaper than diesel.

 

[OCMerrill]

Some may ask, why the hell would you do that.....well if your stuck with an 03 Chebby, this would be a major improvement....

Think of the glove box space you would free up by not having to carry around an extra set of injectors!!!

Choose a common rail Cummins and they use simular injectors.

 

[OCMerrill]

I resemble that remark!! 7.3 + Banks

Keep checking the oil. You dont want to smoke this one.

Actually run a HEUI low on oil and the engine just quits.

 

[BajaMike]

I think you should swap out that drive train for the Cummins mill, drive it for a few months, and then finish the job by swapping out the frame, rear end, body, and interior to Dodge truck pieces.

That makes total sense!

 

[LomitaBob]

If i had the money i would buy a kodiak dually but like they say if u cant have the one you love, love the one you r with. I know i will get better milage running a diesel, i used a full tank each way to the river from lomita. And that was not towing anything, i cant imagine how bad it would suck it up towing a heavy daycruiser. I know i can get decent power for less in the long run. My only other option is a supercharger on my truck with 160k miles

sent from the EVO

 

[pronstar]

My only other option is a supercharger on my truck with 160k miles

If you're concerned with fuel consumption while towing, then this really isn't a good option for you.

 

[ultra26shadow]

I didn't have pics on my Ipad..

:bowdown::bowdown::bowdown: You have done what I have always wanted to do! Love the look of those trucks,

 

[Fury25]

I didn't have pics on my Ipad..

Holy Sh!t. this thing is bad @$$! what a sleeper!!

 

[rivermobster]

My only other option is a supercharger on my truck with 160k miles

sent from the EVO

I'd go this route.

 

[Instigator]

I'd go this route.

Said the Tow Truck Driver.

 

[Zaairman]

I resemble that remark!! 7.3 + Banks

Bank$$$

 

[rivermobster]

Said the Tow Truck Driver.

HW tol me to say that...

 

[Tom Brown]

I've got an old 7.3l Ford, so I'm this may not be all that valid, but I doubt my fuel economy is much different from a buddie's V10 Dodge 3500 DRW. I just don't see much economy to be had with diesel, in the full size truck space.

My VW Golf, on the other hand, comfortably gets north of 50mpg while the identical gas car gets 35.

I'm not knocking diesel but I fail to see how my 12 mpg with diesel is all that much better than a V10 gas truck would get, even when I'm towing. It has amazing capabilities, and that's why I have the truck, but I just don't see any fuel efficiency there.

If you're after fuel economy, I think you should pick up a diesel truck and convert it to gas.

 

[Gelcoater]

I've got an old 7.3l Ford, so I'm this may not be all that valid, but I doubt my fuel economy is much different from a buddie's V10 Dodge 3500 DRW. I just don't see much economy to be had with diesel, in the full size truck space.

My VW Golf, on the other hand, comfortably gets north of 50mpg while the identical gas car gets 35.

I'm not knocking diesel but I fail to see how my 12 mpg with diesel is all that much better than a V10 gas truck would get, even when I'm towing. It has amazing capabilities, and that's why I have the truck, but I just don't see any fuel efficiency there.

If you're after fuel economy, I think you should pick up a diesel truck and convert it to gas.

My buddy only wishes he could get 12 outa his V10 Dodge,empty. Your diesel only gets 12? Thats horrid! WTF is wrong with it? Didn't it used to get like 25?

 

[pronstar]

My buddy only wishes he could get 12 outa his V10 Dodge,empty. Your diesel only gets 12? Thats horrid! WTF is wrong with it? Didn't it used to get like 25?

He's using Canadian gallons.
They're like US gallons, only smaller...and they talk funny

 

[Gelcoater]

He's using Canadian gallons.
They're like US gallons, only smaller...and they talk funny

Ah! Canadian gallons,I shoulda known.

Kinda like how they call ham bacon?

 

[LomitaBob]

My 05 duramax got like 15-17mpg towing my 30foot toy box loaded

sent from the EVO

 

[Zaairman]

He's using Canadian gallons.
They're like US gallons, only smaller...and they talk funny

In all seriousness, Brown's 7.3 is an old IDI... not a Powerstroke.

My 05 duramax got like 15-17mpg towing my 30foot toy box loaded

sent from the EVO

BULLSHIT!

 

[Tom Brown]

My buddy only wishes he could get 12 outa his V10 Dodge,empty. Your diesel only gets 12? Thats horrid! WTF is wrong with it? Didn't it used to get like 25?

The highest I've seen is 14.5 and the lowest 12.

My buddy easily gets over 20mpg towing at 75mph. :thumbsup

 

[Gelcoater]

The highest I've seen is 14.5 and the lowest 12.

My buddy easily gets over 20mpg towing at 75mph. :thumbsup

I have some property I could sell you Brown

 

[bonesfab]

Thanks for the kind words.. I doubled my milage. I get between 12-15. I just took some gear out to get the rpm down so that should help with the milage.

 

[HOOTER SLED-]

Wasn't Lomita Bob just bitchin about how broke he was and shit? Musta hit the lotto? :hmm

 

[LomitaBob]

Wasn't Lomita Bob just bitchin about how broke he was and shit? Musta hit the lotto? :hmm

No lotto, and i still am as broke as fuck!! I am not doing this tomorrow and was actually gonna start crusing the swapmeets for parts. Do a major budget build and let it take however long it takes.

If i hit the lotto the thread would be about my 11 second kodiak
sent from the EVO

 

[Flyinbowtie]

I resemble the 7.3 remark, too

Bob, if you love the truck and it suits you perfectly and you plan to keep it forever, then why not? The conversion ain't cheap tho, and you will be pretty much married to the truck unless you sell it in a non smog state.
The dollars don't make sense until way down the road.
I would do a 12 valve conversion because of the relative simplicity of the install and lack of electronics involved.
The crap fuel mileage we are all seeing these days is due in no small part to the reformulated diesel, when my truck was new the best I ever saw was almost 20 on a road trip, this was before I did the dually conversion.
My overall fuel economy has dropped 20%, but I still get almost 13 towing hauling 21k GCVW on a trip that takes me up and over Donner Summit.
The same trip in a vehicle with a big block Chevy and the same weight netted a stunning 5.5 MPG overall, with the added benefit of going 15 miles an hour slower.
My 7.3 is a 97.
It does not require a smog check.

 

[Yellowboat]

I resemble the 7.3 remark, too

Bob, if you love the truck and it suits you perfectly and you plan to keep it forever, then why not? The conversion ain't cheap tho, and you will be pretty much married to the truck unless you sell it in a non smog state.
The dollars don't make sense until way down the road.
I would do a 12 valve conversion because of the relative simplicity of the install and lack of electronics involved.
The crap fuel mileage we are all seeing these days is due in no small part to the reformulated diesel, when my truck was new the best I ever saw was almost 20 on a road trip, this was before I did the dually conversion.
My overall fuel economy has dropped 20%, but I still get almost 13 towing hauling 21k GCVW on a trip that takes me up and over Donner Summit.
The same trip in a vehicle with a big block Chevy and the same weight netted a stunning 5.5 MPG overall, with the added benefit of going 15 miles an hour slower.
My 7.3 is a 97.
It does not require a smog check.

oh yes it does...

 

[rivermobster]

Some smart guys in this thread. :thumbsup

 

[HolyMoly]

I resemble the 7.3 remark, too

Bob, if you love the truck and it suits you perfectly and you plan to keep it forever, then why not? The conversion ain't cheap tho, and you will be pretty much married to the truck unless you sell it in a non smog state.
The dollars don't make sense until way down the road.
I would do a 12 valve conversion because of the relative simplicity of the install and lack of electronics involved.
The crap fuel mileage we are all seeing these days is due in no small part to the reformulated diesel, when my truck was new the best I ever saw was almost 20 on a road trip, this was before I did the dually conversion.
My overall fuel economy has dropped 20%, but I still get almost 13 towing hauling 21k GCVW on a trip that takes me up and over Donner Summit.
The same trip in a vehicle with a big block Chevy and the same weight netted a stunning 5.5 MPG overall, with the added benefit of going 15 miles an hour slower.
My 7.3 is a 97.
It does not require a smog check.

You photo can only be viewed by members of hotboat pics....and, for some reason you have privacy settings on your stuff because I AM a member and says I don't have permission to view your photo. You got something against midgets?

 

[Yellowboat]

You photo can only be viewed by members of hotboat pics....and, for some reason you have privacy settings on your stuff because I AM a member and says I don't have permission to view your photo. You got something against midgets?

Yeah, they are short.

 

[HolyMoly]

oh yes it does...

No it doesn't. 1 ton diesel truck in that year doesn't even require an inspection.....they don't have cats. 3/4 ton on the other hand is a different story - '97 might not? Mine is a 2002 and doesn't require a smog check or inspection.

 

[Flyinbowtie]

HM tell me if you guys can see it now, I screwed up....

YB I don;t know what to tell you, the new smog deal in Ca picks up the diesels built in 1998 and newer, this is a model year 1997, OBD II not OBD III... I have a friend who is extremely familiar with CAL EPA and the smog laws, extremely familiar....and this truck is not subject to said new regs.

 

[HolyMoly]

HM tell me if you guys can see it now, I screwed up....

YB I don;t know what to tell you, the new smog deal in Ca picks up the diesels built in 1998 and newer, this is a model year 1997, OBD II not OBD III... I have a friend who is extremely familiar with CAL EPA and the smog laws, extremely familiar....and this truck is not subject to said new regs.

I can see it now....helps if I click on the link on your original post and not the one in my quotes.

Is yours 3/4 ton? I know my neighbor has a '98 and he bought it used without a cat well before they changed to requiring an inspection. He called me looking for creative solutions since he knew about the issue I had with my Audi.

When I picked up my truck used from a dealer, I was checking out all the banks stuff and noticed it didn't have a cat. I went to a smog check place and they told me the 1 ton didn't come with a cat and does not require any testing or any inspection....at this time. Even the '98s-? 3/4 tons don't require a "test" and only require a physical inspection.

 

[Yellowboat]

I thougth it was 96 and newer? atleast that is what CARB is saying. then again they don't know the diffrence between a VOC and thier ass hole.

 

[Flyinbowtie]

It is 98 and newer. My guy is well connected.
This is the reason the 94.5 through 97 F series trucks with the 7.3 PSD engine are so scarce, people who have them in decent to good shape are holding on to them, just like the decent shape pre 98 Cummins Trucks.
HM it is an F-350, was a SRW when I bought it. They were ramping up for the new body style in 97 and did not build a dually for the 97 model year.
To add to the confusion, there really was no 1998 model year trucks for the F-250 and 350 series trucks in the HD version. The new body style was introduced in 1998 as a 1999 model, which was the first of the Super Duty body style

On edit.... I am speculating here, but I believe that they can only do the actual smog test on trucks with OBD III on them, because the parameters are only readable through an OBDIII system.
It is a cluster, that is for sure.

 

[Flyinbowtie]

Bob, I believe we have officially crapped on your thread, and you have my apologies for that.

 

[Tom Brown]

This is the reason the 94.5 through 97 F series trucks with the 7.3 PSD engine are so scarce, people who have them in decent to good shape are holding on to them, just like the decent shape pre 98 Cummins Trucks.

To be fair, the early PSD is not generally as well respected as the late IDI because of the fuel injection issues. Mine is an IDI turbo (factory turbo... Banks, I believe). I'm pretty sure the factory turbo IDI trucks were short lived at the very end of the IDI run.

I stayed away from the earliest PSD. That's why I ended up with the IDI.

That's not to say the PSD issues couldn't be sorted out and you'd have an excellent engine that would last one hell of a long time...