Straight cut gears

I hear about straight cut gears on the CLF a lot. Are these used for racing only? What are the advantages?

BD

Straight cut gears require less HP to turn the cam, so they are useful for 'eeking' out the last few drops of HP that an engine can supply. Their use is very popular in race cars where engine displacement is limited, Super V and Off Road racing.

Also Straight Cut gears reduce the side load on the cam thrust bearings, when using HEAVY valve springs (Super Heavy Duty dual springs or even the rare triple springs).

Most of the guys on CLF just want the loud whine of the straight gears. Sounds cool to some and makes people think that they might have a large CC engine.

Adios
Aaron

I have straight cut gears and agree with all the above, haha.

Jim

The water pumper boys run straignt cut gears cause it sounds a lot like a supercharger whine. Yo, turn off that dang sterio, I want to hear some sweet music, and it don't come from no dang electronic speaker.

The main reason for using staight-cut gears is that they are stronger and have slightly less frictional losses; the reduced wear on the cam thrust bearing is a plus.