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I got a 1990 Eddie Bauer bronco with 240k miles on her. Had a 351w that had a few mods but I was getting 10mpg on a good day and just wasnt happy with it. Decided it was time for a diesel and ZF-5 swap to beef up my drivetrain and get some better mpgs out of her.
What I started with:
Bought me a 86 Chevy P-30 step van with a 4bta. Couldnt find a buyer for the van so it got the axe and the rest got sold for parts.
Overall about 1800lbs of aluminum and 2000lbs of steel.
Got a stock step van 4bt to small block ford adapter setup. Included adapter plate, flywheel, starter, clutch, pressure plate, and master cylinder. I ended up getting a new clutch, pressure plate, and master cylinder just to be safe tho.
Starter had been ground a bit for clearance i guess
Started mounting the flywheel and clutch up to the engine. Tip for other people, The chevy flexplate has a adapter on the back of the 4bt which just comes off with a few taps of a hammer. No reason to start freaking out because your flywheel doesnt fit
Testing the fit for the 4bt and mocking up motor mounts. Ended up using the stock mounts that bolt to the engine and then some 300 I6 mounts. Had to get a bushing from Autozone and then some grade 8 bolts.
Mated up to the transmission
Hood clearance is a little close
All bolted in. It was a PITA getting it lined up and both sides bolted down
tons of room in front. Plenty of space for a very very large intercooler
Tried using the hydroboost setup from the chevy stepvan but it was nothing but hassles.
Ended up pulling a new hydroboost setup from a later 90s early 2000s model truck and used that.
Yea its stock for right now. Id say off the line it is slower but once it gets some boost built up then its about the same. I also switched transmissions so my gear ratios are different than before. I am sure that after a few mods (fuel pin, rpm spring, and intercooler) it will be faster. And with a new turbo it will be a lot better. I havent mounted my A/C yet. It is just laying in the engine bay.
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