TWIN CAM CONVERSION CHAIN DRIVEN CAMS FOR HARLEY-DAVIDSON

ANDREWS TWIN CAM CONVERSION CHAIN DRIVEN CAMS FOR HARLEY-DAVIDSON 37N Conversion Chain Driven Cams Allow you to upgrade your 99-06 Twin Cam (except 06 Dyna Glide) to the newer roller-style cam chains and replaces the spring tension cam chain adjusters with the later-style hydraulic adjusters for longer life

Cam grinds listed are designed to be used with stock lifters; they require the installation of a 07-17 cam plate, oil pump, cam sprockets and chains, and both hydraulic chain adjusters (these parts are not included and must be purchased separately)

A list of required components is supplied with each set of cams

Performance should be similar to earlier bikes with the same cam grinds

Made in the U.S.A.

"12N" GRIND CAMS

Can be used with stock valve springs and tappets

Slight power increase when compared to stock

No retuning of the stock system is necessary

Bolt-in cams with the same output as the stock cams

"21N" GRIND CAMS

Ideal for heavy bikes with stock compression ratios and stock pistons

Can be used with stock valve springs and tappets

Bolt-in cams with more torque at low and middle rpm range (1700-4800 rpm)

Similar to EV23 for heavy bikes

"26N" GRIND CAMS

Bolt-in cams for low rpm torque and two-up touring

Can be used with stock valve springs and tappets

Add more torque and horsepower at low and middle rpm range (1800-5200 rpm)

"37N" GRIND CAMS

Bolt-in cams for 88" or 95" motors

Can be used with stock valve springs and tappets

Smooth idle, broad torque band

Run best with low-restriction exhausts (2200-5800 rpm)

"50N" GRIND CAMS

Piston-to-valve and valve-to-valve clearance must be checked

For lighter bikes with 9.5:1 to 9.8:1 compression ratio (2400-6000+ rpm)

Designed for easy installation in 95" motors with stock heads

Can be used with stock valve springs and tappets, but valve travel must be checked (minimum .620")

"55N" GRIND CAMS

Maximum torque and horsepower at higher rpm ranges (2600-6200+ rpm)

Designed for engines with 9.8:1 to 10.2:1 compression ratio

Coil bind should be checked; can be used with stock tappets (minimum valve travel of .620")

Piston-to-valve and valve-to-valve clearance must be checked

TWIN CAM CONVERSION CHAIN DRIVEN CAMS

NOTE: 99-06 Twin Cam motors (except 06 Dyna Glide) cannot use the 07-17 cams, as the bearing journal on the earlier motors is .875" in diameter and the 07-17 cams are 1.000" in diameter. The "N" series of cams feature the .875" bearing journal, yet still accept the new style cam support plate.

NOTE: 99-01 model motors must use the Andrews rear cam sprocket Drag PART #0925-0147. 2002-2006 models must use the stock rear cam sprocket, OEM #25728-06.

NOTE: Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.