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VCCA Home Forums TECHNICAL - 1945 AND EARLIER 1912-1928 1927 timing gear alignment. Cam

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1927 timing gear alignment. Cam #307331 05/03/14 10:12 PM
Joined: Feb 2011 Posts: 277 centennial, co 80122 ron1967 OP Backyard Mechanic
OP ron1967 Backyard Mechanic Joined: Feb 2011 Posts: 277 centennial, co 80122	What is the difference between the cam for a 27. 346742. And a 28. 348669 The repair manual shows a difference between the cam gear key way and the tooth that aligns with the crank gear According to the parts manual. The 27 AA uses cam number 346742. And gear set. 5/8". 325404 steel and crank gear 325396 steel Or Cam gear 345591 steel and crank gear 346874 fiber. 13/16 I have a steel crank gear and a fiber cam gear. 13/16". Haven't opened it up yet to get numbers. Were fiber cam gears later introduced? The manual says (p42-43) that the alignment tooth (AB) 15 teeth from the key CCW. But the (AA) is 13 teeth CCW. The dot on the AB is under a tooth. The AA dot is below a notch not the tooth. Help.

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Re: 1927 timing gear alignment. Cam ron1967 #307335 05/03/14 11:28 PM
Joined: Dec 2001 Posts: 10,379 Likes: 1 Vancouver, WA AntiqueMechanic Technical Advisor ChatMaster - 10,000
AntiqueMechanic Technical Advisor ChatMaster - 10,000 Joined: Dec 2001 Posts: 10,379 Likes: 1 Vancouver, WA	You really should read the "School is in Session" that answers all your questions about cams, gears, and miss marked stuff. Quickly, the 27 is different from all other beasts. The 27 has a fiber crank gear and a steel camshaft gear. All explained in the SiiS. The SiiS is accessed through the Teck Talk thread on this Forum. RAY Chevradioman http://www.vccacolumbiariverregion.org/ 1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.

Re: 1927 timing gear alignment. Cam AntiqueMechanic #307346 05/04/14 12:43 AM
Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA Bill Barker Former ChatMaster ChatMaster - 5,000
Bill Barker Former ChatMaster ChatMaster - 5,000 Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA	Find TECH TALK HERE

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