Marine Engine (Inboard)

BARR

455 cu.in.

Model Year Standard Plug Gap (mm)
1974-71 T16R-U 0.9
1970 T20R-U 0.8
1976-78 W14PR-U 1.0

6 Cyl. 292 cu.in.

Model Year Standard Plug Gap (mm)
1974-70 T20R-U 0.9

6 Cyl. 250 cu.in.

Model Year Standard Plug Gap (mm)
1974-70 T16R-U 0.9

6 Cyl. 230 cu.in.

Model Year Standard Plug Gap (mm)
1970 T20R-U 0.9

V8 400 cu.in.

Model Year Standard Plug Gap (mm)
1974-71 T20P-U 0.9
1970 W16P-U 0.9

V8 350 cu.in.

Model Year Standard Plug Gap (mm)
1974-71 T20R-U 0.9

V8 350 cu.in 4 Bbl.

Model Year Standard Plug Gap (mm)
1970 W16PR-U 0.9

V8 350 cu.in 2 Bbl.

Model Year Standard Plug Gap (mm)
1967-70 W16P-U 0.8

V8 307 cu.in.

Model Year Standard Plug Gap (mm)
1973-71 T16R-U 0.9
1970-68 W16P-U 0.9

440 cu.in.

Model Year Standard Plug Gap (mm)
1966-74 W16P-U 0.9

383 cu.in.

Model Year Standard Plug Gap (mm)
1971-60 W16P-U 0.9

455 cu.in. 4 Bbl.

Model Year Standard Plug Gap (mm)
1972-74 W14PR-U 1.0
1971 W16P-U 1.0
1970 W16P-U 1.0
1970-71 W16P-U 0.9

455 cu.in. Hi-Perf

Model Year Standard Plug Gap (mm)
1972-74 W16P-U 1.0

455 cu.in. 2 Bbl.

Model Year Standard Plug Gap (mm)
1971 W14PR-U 1.0
1968-70 W16P-U 1.0

350 cu.in.

Model Year Standard Plug Gap (mm)
1971-74 W16P-U 1.0

455 cu.in

Model Year Standard Plug Gap (mm)
1972-74 T16R-U 1.0

455 cu.in 2 Bbl.

Model Year Standard Plug Gap (mm)
1971 W14PR-U 0.9

400 cu.in.

Model Year Standard Plug Gap (mm)
1972-74 T16R-U 1.0
1967-71 W16P-U 0.9

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