The 4.9L swap is easy and inexpensive. The transmission that is used with it is the 4T60e (electronic version) IMO, keeping the powertrain the way GM designed it provides the most reliability. The transmission will mount to the Fiero cradle using the Cadillac brackets on Fiero auto mounts with a couple of tiny mods. The front engine mounts need to be fabricated but are not hard to make. You will need to bolt on a smaller alternator for deck clearance.. I used one from an 87 Grand Am. You will also need to add a belt tensioner from an 93-95 Camaro w 3.4L . Then hookup water, fuel, transmission and gasoline supply lines and get two new axles.
The entire procedure is outlined in many threads on this forum so I need not explain every detail. Even if you purchase a harness fro olejedad, depending on what you paid for the powertrain, you should be able to do this swap for under $2000. Most economical swap to 275ft lbs of torque and 29 hwy mpg.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 01-24-2020).]
