Chevrolet Chevr 1985 262 80HP Specs

Chevrolet Chevr 1985 262 80HP engine specs: 262 ci (4.3L), 6-cylinder, 4.057" bore x 3.385" stroke, 23.5:1 compression.

Dimensions

Displacement262 ci / 4.3 L
Bore4.057"
Stroke3.385"
Cylinders6
ConfigurationV8
Compression ratio23.5:1
Rod length5.885"
Rod ratio1.739
Bore/stroke ratio1.199

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Advertised HP80 hp
Years1985

What these numbers mean

Bore/stroke character1.199 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,385 ft/min — conservative for a street engine
Rod ratio1.739 — moderate — the range most production V8s fall in
Displacement per cylinder43.7 ci
Static compression23.5:1 — high enough that pump premium or better is normally required

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