58'-9/66': F135 Engine (3.9 liter) 1bbl cast iron intake standard, 2bbl optional. 4 bolt attachment to exhaust manifold.

9/66'-9/69': F145 Engine (3.9 liter) 2bbl aluminum intake with wide runners standard. 3bolt attachment to exhaust. 4 bolt bosses on the side of the intake for oil filter bracket, which attached via an adapter plate.

10/69'-1/72': F145 Engine (3.9 liter) 2bbl intake with narrow runners. 69 and 70 models had one vacuum port only, for the 4wd shifter. 71 had one port on the side for the brake booster. 72 added a second one in front of the carb for filtered manifold vacuum.

1/72'-12/74': F155 Engine (3.9 liter) 2bbl intake with narrow runners. 74 Cali intake is distinguishable because there is a large hole in the side of the intake under the carb for the Cali-spec EGR system.

1/75'-1/79': 2F (4.2 liter) 2bbl intake with 5 bolt attachement to exhaust manifold. Port behind carb for brake booster, port under carb for PCV, port in front of carb for filtered vacuum source.

1/79'-9/87': 2F Engine (4.2 liter) 2bbl aluminum intake with 5 bolt attachment to exhaust manifold. Main distinction from earlier 2F intakes is that EGR ports into the side of the intake underneath the carb, alongside the PCV system.

Information contributed by:
Mark Algazy
Marks Offroad
Burbank, CA, USA
Ph. (818) 953-9230

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