Ford 428ci Specs: 4.132 x 3.984 in

Ford 428ci specs: 4.132 x 3.984 in (105 x 101.2 mm) bore and stroke, shared by all 5 versions. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	428 ci
Cylinders	8
Bore	4.132"
Stroke	3.984"
Compression	10.5–11.0:1
Advertised power	335–360 hp
Years	1966–1970
Cylinder head data	2 of 5 engines

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
Q	428 ci	4.132" × 3.984"	—	345
P	428 ci	4.132" × 3.984"	—	360
Q-code	428 ci	4.132" × 3.984"	—	345
Ford 428ci · 4.132" × 3.984" · 10.5:1	428 ci	4.132" × 3.984"	10.5:1	340–360
Ford 428ci · 4.132" × 3.984" · 11:1	428 ci	4.132" × 3.984"	11:1	335

Factory cars with a Ford 428ci

• Ford Galaxie: 1966, 345 hp; 1966, 360 hp; 1967, 345 hp; 1967, 360 hp; 1968, 340 hp; 1968, 360 hp
• Ford Thunderbird: 1966, Q-code, 345 hp; 1967, Q-code, 345 hp
• Ford Fairlane: 1968, 335 hp; 1969, 335 hp
• Ford Mustang: 1968, 335 hp; 1969, Q-code, 335 hp; 1969, R-code, 335 hp; 1970, Q-code, 335 hp; 1970, R-code, 335 hp
• Ford Torino: 1968, 335 hp; 1969, 335 hp

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

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