Thinking of going from a 6.0 to 6.6 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1990SSchevy65 · 10-05-2011, 01:15 AM

I have a chance at getting a Duramax and Allision transmission from a truck for free. All it is, is the engine and trans. I was told that the #3 cylinder needs to be resleeved. I was wondering if it would be worth the effort to take it and rebuild it and swap from my 6.0 gas to the 6.6 duramax, or should I just pass on the idea?

I know I would need to get a wiring harness for under the hood, and resleeve the motor. I should be able to reuse my tank. What else would need to be done, inorder to make is crazy idea work?

Sillyoldman · 10-05-2011, 08:00 PM

ttt

bighaas79 · 10-05-2011, 08:37 PM

Sounds like it would be more money and more time than what its worth. Just go buy a truck with a d-max in it. And you cant reuse the tanks, At least the sending units are different. Mounts, exhaust, driveshafts, control modules, wiring harnesses, transfercase, intercooler, turbo piping, radiator...etc. etc. Theres alot needed to do this swap. Buyin all the parts listed will add up fast, that and if you are pulling the motor apart and havin it sleeved... more money... Not to mention all the time to swap everything then hope you have it right.

clinebarger · 10-05-2011, 09:03 PM

Quote:

Originally Posted by 1990SSchevy65

I have a chance at getting a Duramax and Allision transmission from a truck for free. All it is, is the engine and trans. I was told that the #3 cylinder needs to be resleeved. I was wondering if it would be worth the effort to take it and rebuild it and swap from my 6.0 gas to the 6.6 duramax, or should I just pass on the idea?

I know I would need to get a wiring harness for under the hood, and resleeve the motor. I should be able to reuse my tank. What else would need to be done, inorder to make is crazy idea work?

Even with a running engine this would be a HUGE undertaking, Heres some other things you will need.....

Intercooler, piping & boots
Radiator, Fan & shroud
Fuel lines & cooler
Transmission cooler lines
Engine control module
Transmission control module
Throttle pedal
Wiring harness
Drive shaft(s)
Battery trays & battery cables
A/C hoses
Exhaust
And a bunch of other stuff Im forgetting.

Rebuilding a duramax is expensive.....injectors alone list for $300 a peice.

usmcchevy · 10-05-2011, 09:04 PM

Quote:

Originally Posted by bighaas79

Sounds like it would be more money and more time than what its worth. Just go buy a truck with a d-max in it. And you cant reuse the tanks, At least the sending units are different. Mounts, exhaust, driveshafts, control modules, wiring harnesses, transfercase, intercooler, turbo piping, radiator...etc. etc. Theres alot needed to do this swap. Buyin all the parts listed will add up fast, that and if you are pulling the motor apart and havin it sleeved... more money... Not to mention all the time to swap everything then hope you have it right.

I'd have to agree. There is too much that would need to change and I'm not even sure the D-max is worth having a sleeve put in.

Vintage Windmills · 10-05-2011, 09:42 PM

Would probably be easier to swap in an older cummins. I'd only do though if you want something unique.

1990SSchevy65 · 10-06-2011, 12:53 AM

Thank you all for your responses. I originally wanted to buy a diesel cc, but the wife about had a fit when she found out how much they go for, hence the reason I have the 6.0. I figured that it would be more trouble then it was worth, but I thought that I would run the crazy idea to all of your guys and see where it lands. Yes I was thinking of doing a cummins swap as well, but I think I should just sell this truck and find one already swapped in.

Thanks again guys.

10-05-2011, 01:15 AM	#1
1990SSchevy65 Registered User Join Date: Jul 2004 Location: Houston, TX Posts: 109	Thinking of going from a 6.0 to 6.6 I have a chance at getting a Duramax and Allision transmission from a truck for free. All it is, is the engine and trans. I was told that the #3 cylinder needs to be resleeved. I was wondering if it would be worth the effort to take it and rebuild it and swap from my 6.0 gas to the 6.6 duramax, or should I just pass on the idea? I know I would need to get a wiring harness for under the hood, and resleeve the motor. I should be able to reuse my tank. What else would need to be done, inorder to make is crazy idea work? __________________ 2003 Chevrolet CCSB 4x4 1500HD Mine 2011 Toyota Corolla S Wife's new ride 2002 Pontiac Grand Am SE2 Wrecked/Totaled 2014 1990 Chevrolet 454SS GONE 02/26/11 1991 S10 SCSB GONE 12/24/08 1965 Chevrolet LB GONE 06/06/05 GM for life

10-05-2011, 08:00 PM	#2
Sillyoldman #16876 Join Date: Apr 2005 Location: Auburn WA Posts: 12,266	Re: Thinking of going from a 6.0 to 6.6 ttt __________________ Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. *"I love that old car smell"* *Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.*

10-05-2011, 09:42 PM	#6
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: Thinking of going from a 6.0 to 6.6 Would probably be easier to swap in an older cummins. I'd only do though if you want something unique. __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

10-06-2011, 12:53 AM	#7
1990SSchevy65 Registered User Join Date: Jul 2004 Location: Houston, TX Posts: 109	Re: Thinking of going from a 6.0 to 6.6 Thank you all for your responses. I originally wanted to buy a diesel cc, but the wife about had a fit when she found out how much they go for, hence the reason I have the 6.0. I figured that it would be more trouble then it was worth, but I thought that I would run the crazy idea to all of your guys and see where it lands. Yes I was thinking of doing a cummins swap as well, but I think I should just sell this truck and find one already swapped in. Thanks again guys. __________________ 2003 Chevrolet CCSB 4x4 1500HD Mine 2011 Toyota Corolla S Wife's new ride 2002 Pontiac Grand Am SE2 Wrecked/Totaled 2014 1990 Chevrolet 454SS GONE 02/26/11 1991 S10 SCSB GONE 12/24/08 1965 Chevrolet LB GONE 06/06/05 GM for life

10-05-2011, 08:37 PM	#3
bighaas79 Registered User Join Date: Nov 2008 Location: manly iowa Posts: 390	Re: Thinking of going from a 6.0 to 6.6 Sounds like it would be more money and more time than what its worth. Just go buy a truck with a d-max in it. And you cant reuse the tanks, At least the sending units are different. Mounts, exhaust, driveshafts, control modules, wiring harnesses, transfercase, intercooler, turbo piping, radiator...etc. etc. Theres alot needed to do this swap. Buyin all the parts listed will add up fast, that and if you are pulling the motor apart and havin it sleeved... more money... Not to mention all the time to swap everything then hope you have it right.



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