Chrysler LA 360 4-bbl high-performance, dual exhaust Specs: 4.00 x 3.579 in, 195 hp

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Chrysler LA 360 4-bbl high-performance, dual exhaust specs: 360 ci (5.9L) 8-cylinder, 4.00 x 3.579 in (101.6 x 90.9 mm) bore and stroke, 8:1 compression.

The Chrysler LA 360 4-bbl high-performance, dual exhaust is oversquare — the 4" bore exceeds the 3.5787" stroke by 11.8% — a layout that favors airflow and RPM over leverage at the crank. The 3.5787" stroke puts mean piston speed at 4,000 ft/min around 6,700 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.711 is in the range most production engines fall in. Each of the 8 cylinders displaces 45.0 ci (737 cc).

8:1 on iron heads is low by modern standards and generally happy on regular pump fuel.

It is one of 6 engines in the Chrysler 360ci family, all of them 360 ci — the differences between them are in compression, heads and rating, not displacement.

Dimensions

Displacement360 ci / 5.9 L
Bore4"
Stroke3.5787"
Cylinders8
ConfigurationV8
Compression ratio8:1 *
Rod length6.123"
Rod ratio1.711
Bore/stroke ratio1.118

* Compression ratio from a single source; not yet cross-verified.

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Firing order1-8-4-3-6-5-7-2
Advertised HP195 hp
Years1979

What these numbers mean

Bore/stroke character1.118 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,579 ft/min — in the range typical of performance street engines
Rod ratio1.711 — moderate — the range most production V8s fall in
Displacement per cylinder45.0 ci
Static compression8:1 — low by modern standards, generally happy on regular pump fuel

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