Friday, January 17, 2020

3800SC V6 Swap: 1986 Pontiac Fiero GT

You might not think that there is a correct or incorrect engine to swap into a classic Pontiac Fiero...but lemme set you straight.  There are many incorrect engines to swap into a Fiero...such as anything rotary from Mazda, something with a carburetor, and anything aircooled...and this might surprise you, but there is only one engine you should ever swap into a Fiero...and here it is. Find this 1986 Pontiac Fiero GT with 3800 V6 power offered for $6000 in Brunswick, GA via craigslist. Tip from FuelTruck.

From the seller:

1986 Pontiac Fiero GT
condition: excellent
cylinders: 6 cylinders
drive: rwd
fuel: gas
odometer: 92000
paint color: grey
size: compact
title status: clean
transmission: manual
type: hatchback
For Sale or For trade.

Open to any and all offers.
Cash with trades welcomed.
Got any Fiero ttop with auto?

Clean and clear Florida title, so no impact fee for Fl residents.

1986.5 Fiero GT with 3800SC swap & 5 speed Getrag build.

Has a low mile 3800SC on a low mile chassis, with only 90k on the odometer.

Fresh Spec3+ clutch and flywheel and pressure plate, & dual custom exhaust.

West Coast Fiero Big Brake Corvette rotors and calipers kit, front and back.

Recently replaced the Rodneys shifter and selector cables.

Brand new Konig Maxxim 18" wheels and tires, or the solid black wheel option with new tires also available.

Lowering springs and upgraded shocks and suspension components as well.

Custom, one-off vented hood and battery relocated to front.

Cooling fans mounted in rear deck grills.

All new interior, new seats, new headliner, custom console, push button start,

Autometer gauges, fresh window felts, other goodies, heat and ac works.

Has new alt, maf, battery, radiator, and other parts, it runs great.

Of course, it has a few minor issues, mostly cosmetic tho.

See a better way to swap a Fiero...NONSENSE!!


  1. I'm in Georgia... and currently dd'ing a much heavier car with the same engine. So much temptation here!

    While the supercharged 3800 goes with Fieros like peanut butter and jelly, I think there's a few other truly great swap options.

    1. The high output Quad Four from the Calais 442 or Acheiva SCX. This may be mostly for historical reasons - rumor has it Pontiac considered this as a factory option, and it had the Corvette team furious at the possibility that another division might one-up them, and with half the cylinders.

    2. The LS4 front wheel drive V8. Harder to find a good manual transaxle option than the 3800, though.

    1. I am currently working on swapping a K20 into mine. I felt a high reving engine made more sense in a mid engined car and liked the aftermarket support for the K engines.

    2. Well that's a new spin on an old theme! Until last year I owned a '00 Insight with a K20a swap. Every time I drove that car I got out of it with my knees knocking together and a case of the shakes.


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