• Buick Cam Specifications for 401 and 425 nailheads

    by
    Bob
    Published on 08-23-2011 05:54 PM
    5 Comments Comments
    OE specifications for 401 and 425 camshafts. Remember, these are measured at .002", NOT .005" or .050"!
     
    CAM PART NO. 1185918 1351515 1359442 1358100 1362242 1368091 1368090
    NO. ON SHANK 1174480 1174480 1374480 1674480 1362241 1362241 1362241
    401 1959-61 1962-63 Late 1963-64        
    425       1963 Late 1963-64 1965 1966
    425 2X4         1964 1965-66  
    MACHINED GROOVE IN SHANK .060" NONE NONE .060" .060" .120" NONE
    TIMING ADVANCE OF #1 EXHAUST LOBE AHEAD OF SPROCKET KEYWAY 2°30'
    		 5° 5° 0°30' 0°30' 0°30' 5°
    EXHAUST DURATION .002" 299° 302° 295° 299° 299° 299° 295°
    EXHAUST LIFT .441 .439 .431 .441 .441 .441 .431
    INTAKE DURATION .002" 290° 295° 295° 290° 290° 290° 295°
    INTAKE LIFT .439 .439 .431 .439 .439 .439 .431
    SPACING 109° 114° 114° 109° 109° 109° 114°
    EXHAUST OPEN BBC 75° 76° 76° 71° 71° 71° 76°
    EXHAUST CLOSE ATC 44° 46° 39° 48° 48° 48° 39°
    INTAKE OPEN BTC 33° 28° 28° 29° 29° 29° 28°
    INTAKE CLOSE ABC 77° 87° 87° 81° 81° 81° 87°
    OVERLAP 77° 74° 67° 77° 77° 77° 67°
    Click Here for a print version!
    1. Categories:
    2. V-8 Nailhead
    Comments 5 Comments
    1. DocModisett's Avatar
      DocModisett - 09-27-2011, 05:23 PM
      Well if we could see the whole chart it would help.... cant see the right side of the chart for the advertisements......
    1. 60electra225's Avatar
      60electra225 - 09-27-2011, 06:05 PM
      Can see it fine using Firefox.
    1. Bob's Avatar
      Bob - 09-27-2011, 07:03 PM
      The problems lie in screen sizes and resolutions. If you use the partial screen size, and slide the window to one side of your screen, then widen the screen, the center will come out from under the sidebar.
    1. GL03's Avatar
      GL03 - 01-01-2012, 04:52 PM
      Quote Originally Posted by DocModisett View Post
      Well if we could see the whole chart it would help.... cant see the right side of the chart for the advertisements......
      CLick the Print version and you can see it all, and print it too.

      Also "Print Screen" image, open "Paint," Paste, than Save As. You've saved file without printing.
    1. buickrodder's Avatar
      buickrodder - 01-02-2012, 01:35 PM
      I have degreed the late 401 and the 425 cams in to find the spec's at .050 and found that they were = to a 270 aftermartet grind the 401 was 209-209 at .050 on 114 lc lift 431-431.... the 425 cam was 209 213 at .050 with 109 lc lift 438-438 now this was checked at the lifter and x a 1.6 rocker ratio .. The new Mellings cams came out to be 206-207 with 112 lc .. I checked out 13 cams back in the 80's

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