The Holden 355 Street General

The Holden 355 is a proven platform in the Australian performance market - a displacement that delivers strong street torque without pushing into territory that compromises daily usability. The Street General package represents a complete, assembled engine built around Speedmaster components and designed to drop into a range of Holden-powered vehicles.

What Was on the Line

Speedmaster offered a complete Holden 355 engine package as a giveaway, giving one builder the chance to take home a ready-to-install engine. The 355 cubic inch displacement - achieved through a stroker combination based on the Holden V8 block - provides a meaningful step up from the factory 308 configuration. More stroke means more torque across the RPM range, and the Street General package was configured to take advantage of that with matched intake, heads, and rotating assembly components.

This video covers the engine itself - what went into the build, how it was configured, and what the giveaway entailed. For anyone running a Holden platform and considering a displacement upgrade, the 355 combination shown here illustrates what a complete Speedmaster-based build looks like from sump to intake.

A Complete Engine, Not Just Parts

The value of a giveaway like this goes beyond the individual components. A complete engine means every part in the assembly was selected to work together - bearing clearances set, ring gaps checked, torque specs met. That is the difference between a box of parts and an engine that is ready to make power. The Street General package was built to that standard, and this video gives a clear look at the finished result.