Chain-driven Conversion Camshaft

Allows upgrading the Twin Cam '99-'06 (excluding '06 Dyna Glide) to roller timing chains and replaces spring tensioners with hydraulic tensioners for greater durability.
The listed cam profiles are designed for use with original pushrods; they require the installation of cam plate, oil pump, cam gears and chains and both hydraulic cam chain tensioners from '07-'17 models (these parts are not included and must be purchased separately).
Each cam kit includes a list of required components
Performance should be similar to previous models with the same cam profiles
Manufactured in the USA
Twin Cam '99-'06 engines (except '06 Dyna Glide) cannot use '07-'17 camshafts, as the bearing diameter on earlier engines is .875" and on '07-'17 camshafts is 1.000". The "N" series camshafts have the .875" bearing, but accept the new support plate.
'99-'01 models require an Andrews camshaft sprocket. '02-'06 models must use the original rear sprocket, OEM #25728-06.
The installer must check the spring stop, valve clearance and valve-to-piston clearance.
Peak torque and power in the 2600 - 6200+ rpm range.
Designed for engines with a compression ratio of 9.8:1 to 10.2:1.
Spring lock must be checked; can be used with original tappets (minimum valve travel of .620").
Piston-to-valve and valve-to-valve clearance must be checked.



Specifications


Brand
ANDREWS


Supplier reference
216855


Application
Exhaust, Intake


Intake cam centre
102°


Exhaust cam centre
106°


Intake closure
46°


Exhaust Clamp
20°


Intake duration
248°


Exhaust duration
252°


Intake valve lift
0,550"


Intake valve lift at TDC
0,197"


Exhaust valve lift
0,550"


Exhaust valve lift at TDC
0,181"


Model
N Series


Product name
Camshaft Kit


Type
Chain conversion


Units
Pair


Open intake valve
22°


Open Exhaust Valve
52°


Version
Series 55