69 427-400hp Cam Question
01-24-2005, 09:17 PM
#2
Pro
Member Since: Jul 2002
Location: North Port, FL
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There are three GM part numbers for that cam. The most recent number is 12364055 the other two are 3904359 and 3883986. The cam is a mild street performance hydraulic lifter cam with 214 / 218 (I / E) duration at .050 lift and .461 / .480 (I / E) lift. Info came from "Max Performance Chevy Rat Motors" by Ed Staffel. You can probably get a duplicate vintage cam from Crane or Comp Cams although I don't know that for a fact.
01-24-2005, 10:06 PM
#3
Race Director
That's a very mild cam- not a bad thing if that's what you want. But you can make quite a bit more power without giving up good street manners by going to a more aggressive aftermarket cam. If you want, hit me up for specifics on a Crower hydraulic flat tappet cam that took me to a 12.41 ET in the 1/4 mile but was still very friendly for everyday use. 
