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Crane Cams 99607-1

Adjustable Vacuum Advance 1973-85 Ford V8 with Electronic Ignition (w/o computer controls)

Crane Cams 99607-1

271-99607-1

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Crane Cams 99607-1 Adjustable Vacuum Advance 1973-85 Ford V8 with Electronic Ignition (w/o computer controls) $45.26
Adjustable Vacuum Advance
  • 1973-85 Ford V8 with Electronic Ignition (w/o computer controls)

  • Now you can actually tailor your ignition system to meet a wide variety of driving conditions and requirements with these easy-to-install adjustable vacuum advance kits. Includes: vacuum canister with unique adjustable vacuum diaphragm, three sets of advance weight springs, 3/32" Allen wrench, and instructions.

    The adjustability these kits offer allows you to run the maximum ignition advance throughout the RPM range without encountering detonation. Improved performance, efficiency, and dependability are the major benefits. Once a kit is installed, you can also quickly compensate for changes in fuel quality and altitude.

    99607-1 - Crane Cams Adjustable Vacuum Advance is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from Smaller than the 25 degree Motor-craft canister Ad did not specify the 20 degrees of TOTAL vacuum advance which is not adjustable - only the RATE is. I wanted 10-12 degrees max to help at idle and light cruise (523 BB Ford) but the engine ran poorly at light cruise ("all in" 54 degrees advance w the Motor-Craft & 49 degrees w the Crane). I fabricated an aluminum STOP - attached it to the arm of the Crane canister and finally got it to vacuum advance only 10 degrees after a few redo's. The adjuster is out 7 turns which put my idle timing at 26 degrees - the "all in" went to 39. Engine starts easily (16 degrees initial) accelerates nicely with no spark knock (11.2:1 SCR) with total centrifugal advance of 29 degrees. The small size of this canister makes the Duraspark distributor easier to work with. The two photos show my first STOP which yielded 14 degrees of vac advance.
    Date published: 2016-02-29
    • y_2017, m_11, d_17, h_21
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    • loc_en_US, sid_10001_10001_1341328, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
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