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https://www.northwestfab.com/4l80E-to-TH400-NP205-AdapterSpacer-Kit_p_3452.html Sent from my SM-G975U using Tapatalk

Yes the drive shafts have to be cut. The 4l80e is longer. Sent from my SM-G975U using Tapatalk

Pics of adapter. Sent from my SM-G975U using Tapatalk

Sent from my SM-G975U using Tapatalk

Yes a 4l80e will bolt up. I did it on my CUCV. You will need an adapter for the np208. Fabtech sells them. You can use the turbo 400 flex plate. The shifter location is farther back. You will need to drill new holes in your frame to move the shifter mount back. Sent from my SM-G975U using Tapatalk

Building a gantry crane to pull the engine and install the big cam. Sent from my SM-G975U using Tapatalk

Went from 50 mph to 68 mph. Running 54's Sent from my SM-G975U using Tapatalk

Where did you get your jake brake parts? Your link didn't work? I have model 30a. Sent from my SM-G975U using Tapatalk

So found cracks in the block. Complete swap is going to happen now. Found a big cam III 400 for $1500. Sent from my SM-G975U using Tapatalk

Lift and duration have nothing to do with the plunger seating. Sent from my SM-G975U using Tapatalk

Also looking to purchase Injectors with a part number of # 3054233 for the big cam 400. Hopefully they aren't to hot for the 250. Sent from my SM-G975U using Tapatalk

Went and got reman heads of from a big cam 400! Sent from my SM-G975U using Tapatalk

Thats the air supplies for the transfer case. Sent from my SM-G975U using Tapatalk

Got all the pistons pulled. All thats left is remove the piston liners. Order parts and reassemble. Dropped the heads of at the machine shop to be rebuilt. Sent from my SM-G975U using Tapatalk

Made some progress. Got the oil pan off and #3,4 piston caps removed. Piston #4 is being a little stubborn coming out. Sent from my SM-G975U using Tapatalk

Model 30 jake brakes arrived! Sent from my SM-G975U using Tapatalk

Lol, yes it did. Sent from my SM-G975U using Tapatalk

Thanks. A little over my price range. Sent from my SM-G975U using Tapatalk

Already spent money on the donor. Thanks. Though. How much would you want? Just curious. Sent from my SM-G975U using Tapatalk

Head gaskets failed on all 6 pistons. Sent from my SM-G975U using Tapatalk