Pulleys
Changing pulley sizes or using lightweight variants is a quick way to increase power output and lighten up rotating mass, allowing for quicker revs and more power getting to the ground.

Contents

1 Crankshaft
1.1 Lightweight Underdrive
1.2 Lightweight Stock
2 Alternator
2.1 Lightweight Stock
Crankshaft

Lightweight Underdrive
Unorthodox Racing’s polished Ultra Street series lightened under drive crankshaft pulley is just what you need to reduce rotational mass on your motor. Each pulley is CNC-machined from 6061-T6 billet aluminum, which ensures maximum strength and balance. Power gains from this pulley are obtained through both under driving and weight loss. It is a fact that an average of 2.7 horsepower is gained for every pound that is taken off the crankshaft. Weight reduction is where the majority of the gains come from with this pulley. The stock pulley weighs in at 4 lbs. 7 oz., while the Unorthodox Racing pulley weighs a measly 14 oz. The other 15% of the gains noticed with this pulley are due to the under driving it provides. Due to this, our pulleys are ideal for daily driven vehicles. Too much under driving can simply be detrimental to your charging system’s health. Available at CarCustoms.

Lightweight Stock
Manufactured from T6-6061 aircraft grade aluminum, the stock size lightened crank pulley allows for quicker revs and a lightened rotating mass providing 7-8 HP increase to the wheels in combination with the alternator pulley. The pulley is A4-hard coated clear. This coating will leave the pulleys matte gray to dark gray.

Stock crank weight: 61.92 Ounces
Manufactured Crank 24.25 Ounces
Available through group purchase from -MD- LD9 on J-Body.org:
http://www.j-body.org/forums/read.php?f=50&i=32608&t=32608


Alternator

Lightweight Stock
Manufactured from T6-6061 aircraft grade aluminum, the stock size lightened alternator pulley allows for quicker revs and a lightened rotating mass providing 7-8 HP increase to the wheels in combination witht he crank pulley. The pulley is A4-hard coated clear. This coating will leave the pulleys matte gray to dark gray.

Stock alternator weight: 6.34 Ounces
Manufactured Alternator 3.00 Ounces

Available through group purchase from -MD- LD9 on J-Body.org:
http://www.j-body.org/forums/read.php?f=50&i=32608&t=32608
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