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Chevrolet LZE specs: 213 ci (3.5L) 6-cylinder, 3.898 x 2.992 in (99 x 76 mm) bore and stroke. Rated 211 hp, 2007. Used in the Chevrolet Monte Carlo. OHV.
The Chevrolet 213ci (LZE) is oversquare — the 3.898" bore exceeds the 2.992" stroke by 30.3% — a layout that favors airflow and RPM over leverage at the crank. The 2.992" stroke does not reach 4,000 ft/min of mean piston speed until about 8,000 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. A rod ratio of 2.012 is long by production standards — less side-load on the cylinder wall and gentler piston acceleration around TDC, the geometry that tolerates high RPM. Each of the 6 cylinders displaces 35.5 ci (582 cc).
It is one of 4 engines in the Chevrolet 213ci family, all of them 213 ci — the differences between them are in compression, heads and rating, not displacement.
| Displacement | 213 ci / 3.5 L |
|---|---|
| Bore | 3.898" |
| Stroke | 2.992" |
| Cylinders | 6 |
| Configuration | V6 |
| Rod length | 6.02" |
| Rod ratio | 2.012 |
| Bore/stroke ratio | 1.303 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 211 hp |
| Years | 2007 |
| Bore/stroke character | 1.303 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,992 ft/min — conservative for a street engine |
| Rod ratio | 2.012 — long — less side loading on the cylinder wall, favours high RPM |
| Displacement per cylinder | 35.5 ci |
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