1981 Ford Bronco
Owner: AbandonedBronco         (All of this user's registries on SuperMotors)
From: Boise, ID, U.S.A.        (Other registries in ID)
Year, Make, & Model: 1981 Ford Bronco        (Other Ford Broncos)
Avatar:
Nickname: Spartan
Mileage:
Engine: 300 Inline 6

4 barrel 1848 Holley 465cfm carb with a dual port Offenhauser performance intake.
Dual fuel injection 4.9 exhaust manifolds out through a single 2.5'' exhaust with a high flow cat and muffler.
Drivetrain: 4spd NP-435
9'' rear and a 3.00 final drive.
32'' BFG A/T KO2
Notes: The Bronco was abandoned at my girlfriend (now wife's) father's ranch since it didn't pass California emissions (and wouldn't start) with the promise of ''I'll pick it up next week.'' Four years later, it hadn't moved.

He gave it to me if I could get it running, so I did some work and drove it 700 miles home to Idaho. My first Ford, my first truck, and my first 4 wheel drive.

Since then, I've put 45,000 miles on it, rebuild the entire suspension, brakes, transmission, drive train, and have turned the slouch old tired 300 into a powerful and fun torque monster.


No idea how many miles are on it. Pulled the original engine and it had been rebuilt once already and had since then worn out past 60 over. 400,000? 600,000?


Edit: Sadly, the '81 has gone to the great car heaven in the sky. It was totaled in 2017 by some driver on their cell phone. Moral of the story, Don't text and drive!
Last Updated: 4/26/2022
Hits: 59638
Album
Folder Hits Comments Created Updated
folder Four barrel conversion440066,84903/23/094/18/19
    folder O2 Sensor Install2021,622011/17/092/15/14
    folder Extra pics16007,73306/10/101/18/13
    folder Underside Intake Heat18004,95904/7/134/7/13
    folder Holley 80555670015,64009/13/1311/11/14
    folder Holley 184838005,05301/23/1510/5/15
    folder QuickFuel BD-45040004,69008/11/164/25/18
folder Exhaust Upgrade210029,54103/26/092/11/11
folder Random Pictures27007,13803/27/0911/30/15
    folder Videos0022,85106/29/097/13/10
    folder Camping Trip 2009290010,54109/14/099/18/09
    folder Off-road Outing 22007,55206/3/106/18/10
    folder Camping Trip 2010320012,04107/19/108/9/10
    folder Crossflow Head400922012/20/1412/20/14
    folder Camping 201750028508/7/178/7/17
    folder Backpacking 2017300198012/1/1712/1/17
folder New Tires23007,88701/22/1011/30/15
folder Technical40009,41004/7/104/10/18
    folder Wing Window19005,94001/24/114/26/22
    folder Intakes6003,73308/23/112/20/12
    folder Floor Repair31009,651011/5/1111/8/11
folder Cam Install1060052,615011/6/107/24/12
folder Headwork460019,97202/2/1110/25/12
folder Engine Swap410012,86905/2/1110/4/12
folder Saginaw Swap740012,56604/16/122/21/19
folder Engine Rebuild19005,19206/25/1210/3/12
    folder Second attempt3780017,04702/1/162/5/19
        folder Roller Rocker Arms20001,17808/17/179/21/17
folder NP435 Swap960027,626010/4/1212/21/12
folder Ignition9001,13202/11/158/9/16
folder Engine Pics8001,00103/2/153/2/15
folder Warn Hub Diagnostics21002,05203/2/153/17/15
folder New seats19002,09305/14/155/14/15
folder Weatherstripping38003,647010/26/1511/2/15
folder New Door Pins12001,102011/12/1511/12/15
folder Bronco Pics740021,880011/30/156/10/19
    folder 1984 Bronco530018,03108/2/1011/30/15
        folder For Sale Pics32003,665010/6/1510/6/15
    folder Collision Damage90056009/16/1710/2/17
    folder 1985 Bronco400196010/11/1710/11/17
folder Headlight upgrade16001,74001/18/162/14/16
Newest Media Files
Instrument Cluster Plug 14pin.jpg
113 hits | 19.91 KB | Posted: 4/26/22

Instrument Cluster Plug Wiring for 14 pin plug (warning lights)
Instrument Cluster Plug.jpg
98 hits | 21.36 KB | Posted: 4/26/22

Instrument Cluster Plug Wiring for 18 pin plug
2015-03-06 18.15.27.jpg
100 hits | 77.04 KB | Posted: 6/10/19

2015-03-06 18.15.27.jpg
64 hits | 77.04 KB | Posted: 6/10/19

2015-03-06 18.15.46.jpg
85 hits | 58.25 KB | Posted: 6/10/19

2018-10-24 15.51.32.jpg
100 hits | 46.86 KB | Posted: 4/18/19

2018-10-24 15.51.22.jpg
83 hits | 43.21 KB | Posted: 4/18/19

2018-10-24 12.27.36.jpg
90 hits | 56.67 KB | Posted: 4/18/19

2018-10-24 12.27.07.jpg
72 hits | 56.7 KB | Posted: 4/18/19

Most Viewed Files
Engine Bay.JPG
5404 hits | 82.67 KB | Posted: 3/23/09


Here's a shot of the mostly stock engine bay. The only thing in this picture that isn't completely stock is the EFI 300 exhaust manifolds. It's time to dig in.


0829081417-00.jpg
3049 hits | 44.85 KB | Posted: 3/26/09


These pre-shaped pieces showed up in the mail. The fact that the tailpipe was made specifically for the Bronco and the Y-pipe for the EFI manifolds on a straight six really saved me time and money.


Offenhauser Intake.JPG
2848 hits | 78.54 KB | Posted: 3/23/09

The new aluminum Offenhauser dual port intake.


New Intake.JPG
2826 hits | 73.7 KB | Posted: 3/23/09


Here's the new intake in place.


Intake Removed.JPG
2577 hits | 77.76 KB | Posted: 3/23/09


The intake removed giving a clear shot of the dual exhaust manifolds of the EFI 300. MUCH better than the restrictive six-to-one stock 1bbl exhaust manifold. I thought about painting those when I put them in but I didn't want the rest of the engin...
With Heat Spacer.JPG
2428 hits | 74.69 KB | Posted: 3/23/09


The intake with the heated spacer. This particular spacer is designed to run coolant underneath the carb to prevent it from icing, especially in the winter.


Hooking the lines up.JPG
2261 hits | 78.68 KB | Posted: 3/23/09


Everything's in place, the lines are hooked up, and it's ready to go!


Accelerator Bracket.JPG
2203 hits | 68.06 KB | Posted: 3/23/09


The custom made accelerator bracket. Cost about $6 for the steel.


The Final Touch.JPG
2201 hits | 82.99 KB | Posted: 3/23/09


Putting on the last, and final touch after we tuned it. It is time for a test drive.


Maintenance & Modification Logs
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