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’94 7.3L IDI Turbo Engine Swap

Project 300: Engine, Transmission, & Rear Axle
Posted August 19 2012 12:34 AM by jason.thompson 
Filed under: Diesel Engines, Tech Tips


 Project 300 is back from the dead thanks to our AAA roadside assistance and Larry's Towing and Transport.  We're going to swap out the tired ’87 6.9L IDI in favor of a ’94 7.3L IDI factory turbo engine. We also have a long pinion 10 1/4 rear axle and ZF five-speed manual transmission to swap in. I'd like to rebuild all the parts we take out. The ZF five-speed transmission that originally came in the truck was damaged due to a flexing firewall, which caused the hydraulic slave cylinder to not functional correctly. The original short pinion rear axle has a lot of play in the pinion nut and the seal was leaky. The driveshaft carrier bearing needs to be replaced and could be the reason for the rear axle problems?   

 I want to use my 6.9L block and 7.3L heads. I'll need to find a machine shop to drill and tap the block in order to accept the bigger head studs... it it'll even work?  

Also it'll be interesting to try out the performance camshaft from Typ4 at

I want to put this performance IDI build in a car.

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