Pontiac Ponti 2004 346 350HP Specs

Pontiac Ponti 2004 346 350HP engine specs: 346 ci (5.7L), 6-cylinder, 3.898" bore x 3.622" stroke, 10.2:1 compression.

Dimensions

Displacement346 ci / 5.7 L
Bore3.898"
Stroke3.622"
Cylinders6
ConfigurationV8
Compression ratio10.2:1
Rod length6.1"
Rod ratio1.684
Bore/stroke ratio1.076

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Advertised HP350 hp
Years2004

What these numbers mean

Bore/stroke character1.076 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,622 ft/min — in the range typical of performance street engines
Rod ratio1.684 — moderate — the range most production V8s fall in
Displacement per cylinder57.7 ci
Static compression10.2:1 — in the range that usually runs on pump premium

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