What is the intake manifold bolt tightening sequence for the Ford 302/351W V8?

Per Fig. 2.47, the twelve bolts are tightened in numbered order 1 through 12, alternating sides: right side positions (top to bottom) are 5, 1, 9, 11, 3, 7 and left side positions are 6, 4, 12, 10, 2, 8, starting with the center bolts and working outward.

What is the intake manifold bolt tightening sequence for the Ford 351M/400 V8?

Per Fig. 2.48, the top row of bolts (front to rear as drawn, left to right) is numbered 7, 3, 11, 9, 1, 5 and the bottom row is 8, 2, 10, 12, 4, 6; tighten in numerical order 1 through 12.

Does this page give the torque values for the intake manifold bolts?

No. The page shows only the bolt tightening sequences (Figs. 2.47 and 2.48) and refers the reader to Section 37 of the manual for related information.

Which engines do these diagrams cover?

Fig. 2.47 covers the 255, 302 (text partially cut off) and 351W V8 engines; Fig. 2.48 covers the 351M and 400 V8 engines.

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Ford 255/302/351W & 351M/400 V8 Intake Manifold Bolt Tightening Sequence

Intake manifold bolt tightening sequence figures for Ford V8 engines

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Intake manifold bolt tightening sequence diagrams for 255, 302 and 351W V8 engines with numbered bolt order.

AI caption October 2005 · Photo 130 of 277

This scanned page from an automotive repair manual shows two intake manifold bolt tightening sequence diagrams for Ford V8 engines. Figure 2.47 illustrates the intake manifold bolt tightening sequence for the 255, 302 (partially cut off as '3') and 351W V8 engines, showing a top-down view of the manifold with twelve numbered bolt positions and an arrow indicating the front of the engine. The numbering starts near the middle-right of the manifold (bolt 1) and alternates side to side, working outward toward the front and rear. Figure 2.48 shows the corresponding twelve-bolt tightening sequence for the 351M and 400 V8 engines, with 'FRONT OF ENGINE' marked by an arrow at the left; the top row runs 7-3-11-9-1-5 and the bottom row 8-2-10-12-4-6. Both figures reference Section 37 of the manual. No torque values are printed on this page—only the bolt order—so the reader learns the correct sequence in which to tighten intake manifold bolts to ensure even gasket clamping, but must consult the manual text for the actual torque specifications. The page was uploaded as part of a document set for a 1992 Ford Bronco.

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Frequently asked questions

What is the intake manifold bolt tightening sequence for the Ford 302/351W V8?: Per Fig. 2.47, the twelve bolts are tightened in numbered order 1 through 12, alternating sides: right side positions (top to bottom) are 5, 1, 9, 11, 3, 7 and left side positions are 6, 4, 12, 10, 2, 8, starting with the center bolts and working outward.
What is the intake manifold bolt tightening sequence for the Ford 351M/400 V8?: Per Fig. 2.48, the top row of bolts (front to rear as drawn, left to right) is numbered 7, 3, 11, 9, 1, 5 and the bottom row is 8, 2, 10, 12, 4, 6; tighten in numerical order 1 through 12.
Does this page give the torque values for the intake manifold bolts?: No. The page shows only the bolt tightening sequences (Figs. 2.47 and 2.48) and refers the reader to Section 37 of the manual for related information.
Which engines do these diagrams cover?: Fig. 2.47 covers the 255, 302 (text partially cut off) and 351W V8 engines; Fig. 2.48 covers the 351M and 400 V8 engines.