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Joined: Feb 2011
Posts: 277
Backyard Mechanic
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OP
Backyard Mechanic
Joined: Feb 2011
Posts: 277 |
How much should the 27 lobe lift the push rod. Same for exh and intake
The same question for the 28
If they are different than the easiest way to see if i have the correct cam would be to measure the lift while still in the engine
Thanks. Ron
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
The grind on a 28 cam is different that the 27. Consider that the lifters for the 27 are very small, while the lifters on the 28 are quite large. Neither the cams or the lifters are the same. I suggest you go to the Tech Talk Thread and find the "School is in Session" and then go to the discussion on the cam(s).  
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.
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Joined: Oct 2003
Posts: 814 Likes: 1
ChatMaster - 750
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ChatMaster - 750
Joined: Oct 2003
Posts: 814 Likes: 1 |
ron1967, They are listed under two different part numbers in the 1928 parts book. 1927 #346742(use only with lifter 346743) 1928 #348669. So there is a difference.
Steve
'25 Superior "K", '79 Corvette , '72 Corvette LT-1 & 1965 Corvette Coupe
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Joined: Mar 2007
Posts: 127
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Mar 2007
Posts: 127 |
Go to tech talk as Ray suggests - very good info on the two cams showing longer inlet opening period on the 28 cam. Also go to the Chev manual web site and look at 28 specs doc which shows profile of cam lobes
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Joined: Nov 2001
Posts: 5,906 Likes: 8
Former ChatMaster ChatMaster - 5,000
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Former ChatMaster ChatMaster - 5,000
Joined: Nov 2001
Posts: 5,906 Likes: 8 |
Members can go HERE. to see the full flipbook version.. Log in to MEMBERS Area first, then click on above link. Or view the actual original Chat postings HERE. 
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