Pontiac 250 Ohc6 Sprint Specs

Pontiac 250 Ohc6 Sprint engine specs: 250 ci (4.1L), 6-cylinder, 3.874" bore x 3.5315" stroke, 10.5:1 compression.

Dimensions

Displacement	250 ci / 4.1 L
Bore	3.874"
Stroke	3.5315"
Cylinders	6
Compression ratio	10.5:1
Bore/stroke ratio	1.097

Construction

Block material	cast iron
Head material	cast iron
Valvetrain	SOHC
Fuel type	gas
Advertised HP	215 hp

What these numbers mean

Bore/stroke character	1.097 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,532 ft/min — in the range typical of performance street engines
Displacement per cylinder	41.7 ci
Static compression	10.5:1 — in the range that usually runs on pump premium

Run the numbers for this engine

Each link opens the calculator with this engine's specs already filled in.

• Displacement calculator
• Compression ratio calculator
• Piston ring gap calculator
• Piston speed calculator
• Carburetor CFM calculator

Vehicles (3)

• Pontiac Firebird Sprint
• Pontiac LeMans
• Pontiac LeMans Sprint

Similar engines

• Pontiac Pontiac OHC-6 · 3.874" × 3.531" · 9:1 — 250 ci
• Pontiac Pontiac OHC-6 · 3.874" × 3.252" · 9:1 — 230 ci
• Pontiac OHC 6 Sprint — 230 ci
• Pontiac Ponti 1975 250 105HP — 250 ci
• Pontiac Pontiac 250ci · 3.877" × 3.535" · 9:1 — 250 ci
• Pontiac Pontiac 250ci · 3.877" × 3.535" · 10.5:1 — 250 ci
• Cadillac V8 — 250 ci
• Chevrolet Chevrolet 250ci · 3.875" × 3.530" · 8.801:1 — 250 ci

← All Pontiac OHC-6 engines