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SSDiv6 · 05-21-2010, 01:28 PM

Any manual transmission, either 4-speed or 5-speed, needs proper gear ratio selection for optimum performance based on the power band of the engine. Engines with narrow power bands, benefit with 5-speeds.

The gear ratio selection needs to be optimized to allow the engine to recover and stay in its power band through all gears.

In order to keep their engines in the power band, I have known of SS racers with small CID engines, that must run a 4-speed, put a 1.1 or 1.2 high gear on their 4-speeds.

05-21-2010, 01:28 PM	#20
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,045 Likes: 712 Liked 1,605 Times in 583 Posts	Re: 4 speed vs. 5 speed for stocker Any manual transmission, either 4-speed or 5-speed, needs proper gear ratio selection for optimum performance based on the power band of the engine. Engines with narrow power bands, benefit with 5-speeds. The gear ratio selection needs to be optimized to allow the engine to recover and stay in its power band through all gears. In order to keep their engines in the power band, I have known of SS racers with small CID engines, that must run a 4-speed, put a 1.1 or 1.2 high gear on their 4-speeds.