Product Description
Finally, Accufab, Inc. has developed some easy to use 4.6/5.4, 4V secondary gears that are very strong and don't add time to the degreeing process like those 9 keyway versions. These are made of 8620 steel and are dual process heat treated to ensure a long life and the capability to endure the most harsh operating envirements. They will work with all available secondary chains and have a much tighter fit than the stock gears which have an ID that is .004"-.005" larger than the camshaft snout. The tighter clearances reduce runout and help maintain proper cam timing while also lessening vibration.
The geared key is for the exhaust cam while the keyless gear is for the intake. The kit includes keys for the intake gears that are 0, 1, 2, 3, 4, and 5 degrees offset. This allows for advancing and retarding up to 5 degrees in 1 deg increments. Unlike the 9 keyway gears (4 deg adv/ret), these do not require secondary and primary gear removal to adv/ret the intake intake cams which saves a great amount of time.
