6.2 L92 Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pilotXC · 09-18-2019, 07:20 PM

Anyone familiar with an L92/6L80E swap with an NP205 transfer case? I have the opportunity to buy the combo for $3500, but having a hard time piecing together the complexity of the actual swap and if I should attempt it or wait for a 5.3 or 6.0 with a 4L80E that might be not quite as complex to marry to the existing transfer case. Or buy the combo, and find a 4L80E to use instead of the 6L? Any insight would be great to help me figure this out. Thank you.

toolboxchev · 09-23-2019, 09:56 PM

Most of us old-schoolers are not doing LS Swaps based on one reason and many more, Dollars, Fabrication, Dollars, More Fabrication, More Dollars, and then Aftermarket parts.

In doing an LS swap I would estimate on the low side about 5 grand, for one done right I would venture you can get well into the 30 grand range. Just take a look at some of those plug and play units from Chevrolet Performance. No doubt some great stuff there but it is going to take some doing for sure.

2500 bucks for a L31 Block NEW
1000 bucks for a TCI Turbo 350 and then you can afford the fuel

**truckster** · 09-24-2019, 12:18 AM

I was considering using the 4l80e out of my van and I got some really good advice from former forum member Clinebarger. Here's the link:

http://www.67-72chevytrucks.com/vboa...4l80+truckster

I don't know how it would relate to the 6l80e because I have no idea how the two transmissions compare.

**Clyde65** · 09-24-2019, 07:28 PM

My opinion: that’s a little high unless it has like 10k miles on it.

The 4x4 to 2wd will cost you some too!

I might choose that if I was going with a hot rod, you can cam the l92 and have some serious HP

pilotXC · 09-24-2019, 08:00 PM

Thanks for the replies. I passed on the L92 but picked up an LQ4. Maybe a bit more work to get it to fit, but I honestly don't think it's much. You can buy engine mounts, you can get the harness adjusted for your install, have the ECM flashed for your install with minimal connections to make, and there are a variety of ways to connect the 4L80E to the NP205 and you get significantly better gas mileage, more modern reliability and performance, and a much more drive able vehicle long term.

09-18-2019, 07:20 PM	#1
pilotXC Registered User Join Date: Feb 2016 Location: Portland OR Posts: 154	6.2 L92 Swap Anyone familiar with an L92/6L80E swap with an NP205 transfer case? I have the opportunity to buy the combo for $3500, but having a hard time piecing together the complexity of the actual swap and if I should attempt it or wait for a 5.3 or 6.0 with a 4L80E that might be not quite as complex to marry to the existing transfer case. Or buy the combo, and find a 4L80E to use instead of the 6L? Any insight would be great to help me figure this out. Thank you.

09-23-2019, 09:56 PM	#2
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: 6.2 L92 Swap Most of us old-schoolers are not doing LS Swaps based on one reason and many more, Dollars, Fabrication, Dollars, More Fabrication, More Dollars, and then Aftermarket parts. In doing an LS swap I would estimate on the low side about 5 grand, for one done right I would venture you can get well into the 30 grand range. Just take a look at some of those plug and play units from Chevrolet Performance. No doubt some great stuff there but it is going to take some doing for sure. 2500 bucks for a L31 Block NEW 1000 bucks for a TCI Turbo 350 and then you can afford the fuel

09-24-2019, 12:18 AM	#3
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Re: 6.2 L92 Swap I was considering using the 4l80e out of my van and I got some really good advice from former forum member Clinebarger. Here's the link: http://www.67-72chevytrucks.com/vboa...4l80+truckster I don't know how it would relate to the 6l80e because I have no idea how the two transmissions compare. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

09-24-2019, 07:28 PM	#4
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,539	Re: 6.2 L92 Swap My opinion: that’s a little high unless it has like 10k miles on it. The 4x4 to 2wd will cost you some too! I might choose that if I was going with a hot rod, you can cam the l92 and have some serious HP __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

09-24-2019, 08:00 PM	#5
pilotXC Registered User Join Date: Feb 2016 Location: Portland OR Posts: 154	Re: 6.2 L92 Swap Thanks for the replies. I passed on the L92 but picked up an LQ4. Maybe a bit more work to get it to fit, but I honestly don't think it's much. You can buy engine mounts, you can get the harness adjusted for your install, have the ECM flashed for your install with minimal connections to make, and there are a variety of ways to connect the 4L80E to the NP205 and you get significantly better gas mileage, more modern reliability and performance, and a much more drive able vehicle long term.



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