2.2L four cylinder: 1-3-4-2
3.9L V-6:1-6-5-4-3-2...dist. rotation: clockwise
slant 6 cylinder: 1-5-3-6-2-4...dist. rotation: clockwise
smallblock: 1-8-4-3-6-5-7-2...dist. rotation: clockwise
bigblock: 1-8-4-3-6-5-7-2...dist. rotation: counter-clockwise
smallblock engines: 273, 318, 340, 360 (cubic inch displacement)
bigblock engines: 361, 383, 400, 413 Wedge, 426 Wedge, 440, 426 Hemi (cubic inch displacement)
This information is also cast into your factory manifold, however, most aftermarket intakes do not include this information in their castings.
#1 cylinder on the slant six is at the front of the engine
#1cylinder on the V-6 and V-8 engines is on the drivers side front of engine.
#2cylinder on the V-6 and V-8 engines is on the passenger side front of engine.
AZ_Drummer added
FTR, the 2.2 / 2.5L are CW rotation
3.9L V-6:1-6-5-4-3-2...dist. rotation: clockwise
slant 6 cylinder: 1-5-3-6-2-4...dist. rotation: clockwise
smallblock: 1-8-4-3-6-5-7-2...dist. rotation: clockwise
bigblock: 1-8-4-3-6-5-7-2...dist. rotation: counter-clockwise
smallblock engines: 273, 318, 340, 360 (cubic inch displacement)
bigblock engines: 361, 383, 400, 413 Wedge, 426 Wedge, 440, 426 Hemi (cubic inch displacement)
This information is also cast into your factory manifold, however, most aftermarket intakes do not include this information in their castings.
#1 cylinder on the slant six is at the front of the engine
#1cylinder on the V-6 and V-8 engines is on the drivers side front of engine.
#2cylinder on the V-6 and V-8 engines is on the passenger side front of engine.
AZ_Drummer added
FTR, the 2.2 / 2.5L are CW rotation
