Twin Cam 88® Camshafts 1999-up			Duration .053" Open/Close Intake Exhaust	Gross Valve Lift @TDC 1.65:1 Rocker Ratio Intake Exhaust
Mild Street, Cruising, Towing			226°/236° 13/33 42/14	505"/.505" (.147"/.152")	Bolt-in cam, low-end torque and mid-range HP. Good for heavy bikes. Stock compression ratio. Best power with performance air cleaner, free-flow exhaust. Uses stock valve springs. Idle to 5,000 RPM
83276	1-3000CL	HTC-300-2

Moderate Street, Cruising			236°/242° 20/36 47/15	.505"/.505" (.185"/.157")	Bolt in. Mild performance for Dynas, Softails or single riders. Stock comp. ratio or up to 9.5:1. Best power with performance air cleaner and free-flow exhaust. Uses stock valve springs. Idle 1,500 to 5,000 RPM
83278	1-3001CL	HTC-310-2
83226	1-3001GD

Street Performance, Some Engine Modifications			242°/252° 19/43 48/24	.505"/.505" (.178"/.205")	Bolt-In. OK with stock compression but works best with up to 10.1:1 compression ratio. Best power with performance air cleaner and free-flow exhaust. Uses stock valve springs.1,800 to 5,800 RPM
83280	1-3002CL	HTC-316-2
83227	1-3002GD

Hot Street Performance, Modified			240°/248° 18/42 46/22	.570"/.570" (.173"/.198")	OK with stock cubic inch or big-bore kits (95 c.i.). Best power with increased compression ratio, 9.5:1-up, head mods. Must use Crane valve springs, clearanced for .570" lift. Great low-end and mid-range torque with added upper RPM power. Must use performance air cleaner and free-flow exhaust.1,800 to 5,800 RPM
83282	1-3003CL	HTC-290-2
83228	1-3003GD

Hot Street Performance, Modified			246°/254° 20/46 52/22	.619"/.619" (.188"/.193")	For modified engines with 10.25:1-up compression, big bore kits, head mods. Must use Crane valve springs, clearanced for .600" lift. Must use performance air cleaner and exhaust. Designed for use with Edelbrock Performer RPM Twin-Cam cylinder heads.2,000 to 6,000 RPM
83283	1-3005CL	HTC-296-2
83229	1-3005GD

Max Hot Street , Modified			254°/260° 25/49 56/24	.600"/.600" (.211"/.206")	For modified engines. Higher compression, 10.5:1-up, big-bore kits, head mods, etc. Must use Crane valve springs., clearanced for .600" lift. Strong mid-range torque with upper RPM power. Must use performance air cleaner and free-flow exhaust. 2,000 to 6,200 RPM
83284	1-3004CL	HTC-304-2
83230	1-3004GD

NOTE A: Part numbers with CL suffix are cam & lifter kits. All cams are made for 1999 & up Twin-Cam 88 engines. All cams are made for splined cam sprocket, 2000 models & later can use stock gear & bolt assembly. Use rear cam roller bearing assembly Harley Davidson® #8983 NOTE B: Part numbers with GD suffix are gear drive cams for use with S & S gear drive. Twin-Cam 88® is a registered trademark of Harley-Davidson® Motor Company.