

Maintenance & Tuneup Specifications
Pages 353-367
Ford Division Ford Motor Company produced Sept 1955
Tuneup Specs
Ford I-6 223-cid 137-hp A-code
Firing Order 1-5-3-6-2-4 Cyl front to rear 1-2-3-4-5-6
Spark Plug Campion 870 (or Autolite 2954) 18 mm (no gasket)
Plug Gap .032-.036" Plug Tq lb-ft 15-20 Point Gap .024-.026" Dwell Angle 35-38°
Ignition Timing w/ vac hose to dist disconnected Advance counter-clockwise
4º BTDC (Conv Dr & OD) 6° BTDC (Fordomatic Dr) (up to 8-10º BTDC, all)
Idle Spd 475-500 rpm (Conv Dr & OD) 475-500 rpm (Fordomatic Dr, 425-450 rpm in "DR")
Valve Lash Int .019" Exh .019" (hot)
Comp Press 150 psi (sea level)
Oil Cap 4 qt (eng) + 1 qt (filter) = 5 qt US (1 qt US = 0.95 liter) Oil Press 45-50 psi (hot @ 2000 rpm)
Coolant Cap 14.5 qt (rad) + 1 qt (heater) = 15.5 qt US Coolant Press 12-15 lb
Tuneup Specs
Ford V-8 272-cid 173-hp U-code
Thunderbird V-8 292-cid 200-hp (202-hp w/ Fordomatic Dr) M-code
Special Police V-8 292-cid 200-hp (202-hp w/ Fordomatic Dr) M-code
Thunderbird Special V-8 312-cid 225-hp P-code
(Police) Interceptor V-8 312-cid 210-hp (215-hp w/ Fordomatic Dr) P-code
Firing Order 1-5-4-8-6-3-7-2 Cyl front to rear Right 1-2-3-4 Left 5-6-7-8
Spark Plugs Campion 870 (or Autolite 2954) 18 mm (no gasket) Gap .032-.036" Tq 15-20 lb-ft
Point Gap .014-.016" Dwell Angle 26-28.5°
Ignition Timing w/ vac hose to distributor disconnected Advance clockwise
3° BTDC (Conv Dr & OD) 6° BTDC (Fordomatic Dr) (up to 8-10° BTDC, all)
Valve Lash Int .019" Exh .019" (hot)
Idle Speed 475-500 rpm (Conv Dr & OD) 475-500 rpm (Fordomatic Dr, 425-450 rpm in "DR")
Comp Press Ford V-8 272-cid 160 psi (Conv Dr & OD) 165 psi (Fordomatic Dr) (sea level)
Comp Press Thunderbird V-8 292-cid 155 psi (Conv Dr & OD) 160 psi (Fordomatic Dr)
Comp Press Special Police V-8 292-cid 155 psi (Conv Dr & OD) 160 psi (Fordomatic Dr)
Comp Press Thunderbird Special V-8 312-cid 160 psi (Conv Dr & OD) 165 psi (Fordomatic Dr)
Comp Press (Police) Interceptor V-8 312-cid 155 psi (Conv Dr & OD) 160 psi (Fordomatic Dr)
Oil Cap 5 qt (eng) + 1 qt (filter) = 6 qt US (1 qt US = 0.95 liter) Oil Press 45-50 psi (hot @ 2000 rpm)
Coolant Cap 19 qt (rad) + 1 qt (heater) = 20 qt US Coolant Press 12-15 lb














