Advice on a 6.0 swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Danny Bost · 07-09-2015, 08:05 PM

I was just given a good running 6.0 out of a 2004 2500. I was also given a 4L80E that needs rebuilt and all of the wiring harness and accelerator pedal. I am thinking about putting it in my 71. I know I will need a computer since I don't have the original one. I will also need a fuel pump, but does it have to be in tank or will a high pressure high volume frame mount work? Last question for now, I would like to put a 5 speed in it instead of the auto. Any suggestions or advice.

Thanks Danny

hugger6933 · 07-09-2015, 08:46 PM

Lucky! Or so many may think. first off if you use the 4L80E those things are crazy high to rebuild. But there great trannys. You can use a frame rail mounted pump just make sure it will put out 60PSI cause the min it takes to run those injectors I think is around 50 psi[actually I think it is 48] but most like to run lower to mid 50's in psi.
Now as far as a man trans you probably want to look for a NV4500 it is a good heavy trans that can take some abuse.
Also look through the ls swap section on this site and you can learn a lot real quick as that swap is getting more popular every day. I did my first LS swap in like 2005 when there was NO parts or much help like there is now days. Jim

Danny Bost · 07-09-2015, 09:51 PM

Thank you. I will look there
Danny

Aruba1 · 07-10-2015, 10:24 AM

I have an external walbro 255 pump installed on mine. The external pumps do not last nearly as long as the internal ones but I wanted to keep my in-cab tank as it's pretty good shape. I have done extensive research on the NV4500 install and this link covers it the best: http://www.gmt400.com/forum/showthre...cked-with-info (see post #17 for parts list)

Most of the parts I got off ebay including the sachs 1050 clutch for $65. You will need metric bolts for the flywheel (6) and the pressure plate (6). My best advise is NOT to purchase these online, once you have all the parts together, find the thread size online and the actual depth that you will need and head out to an Ace Hardware (get the metric 10.9 bolts that are the equivalent of 8 grade bolts). I got both sets of bolts that were recommended online and both were too short. The parts list look like a lot but once you have everything lined up, it goes really fast. I used my backhoe to install the motor with the transmission and I just had the radiator out.

Keep us posted on the progress. Since I just did mine I may be of some help, lol.

07-09-2015, 08:46 PM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,280	Re: Advice on a 6.0 swap Lucky! Or so many may think. first off if you use the 4L80E those things are crazy high to rebuild. But there great trannys. You can use a frame rail mounted pump just make sure it will put out 60PSI cause the min it takes to run those injectors I think is around 50 psi[actually I think it is 48] but most like to run lower to mid 50's in psi. Now as far as a man trans you probably want to look for a NV4500 it is a good heavy trans that can take some abuse. Also look through the ls swap section on this site and you can learn a lot real quick as that swap is getting more popular every day. I did my first LS swap in like 2005 when there was NO parts or much help like there is now days. Jim

07-09-2015, 09:51 PM	#3
Danny Bost Registered User Join Date: Dec 2009 Location: Aztec NM Posts: 229	Re: Advice on a 6.0 swap Thank you. I will look there Danny __________________ Danny 71 SWB

07-10-2015, 10:24 AM	#4
Aruba1 Registered User Join Date: Apr 2014 Location: Birmingham, AL Posts: 560	Re: Advice on a 6.0 swap I have an external walbro 255 pump installed on mine. The external pumps do not last nearly as long as the internal ones but I wanted to keep my in-cab tank as it's pretty good shape. I have done extensive research on the NV4500 install and this link covers it the best: http://www.gmt400.com/forum/showthre...cked-with-info (see post #17 for parts list) Most of the parts I got off ebay including the sachs 1050 clutch for $65. You will need metric bolts for the flywheel (6) and the pressure plate (6). My best advise is NOT to purchase these online, once you have all the parts together, find the thread size online and the actual depth that you will need and head out to an Ace Hardware (get the metric 10.9 bolts that are the equivalent of 8 grade bolts). I got both sets of bolts that were recommended online and both were too short. The parts list look like a lot but once you have everything lined up, it goes really fast. I used my backhoe to install the motor with the transmission and I just had the radiator out. Keep us posted on the progress. Since I just did mine I may be of some help, lol.

07-09-2015, 08:05 PM	#1
Danny Bost Registered User Join Date: Dec 2009 Location: Aztec NM Posts: 229	Advice on a 6.0 swap I was just given a good running 6.0 out of a 2004 2500. I was also given a 4L80E that needs rebuilt and all of the wiring harness and accelerator pedal. I am thinking about putting it in my 71. I know I will need a computer since I don't have the original one. I will also need a fuel pump, but does it have to be in tank or will a high pressure high volume frame mount work? Last question for now, I would like to put a 5 speed in it instead of the auto. Any suggestions or advice. Thanks Danny __________________ Danny 71 SWB



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