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Thread: Base plate vacuum check ball?

  1. #1

    Default Base plate vacuum check ball?

    Hello, I have a couple Holley 4160s (x6) and I had to switch out one of the base plates on a few and I noticed that there was a check ball on one of my plates and an open hole on my other plate. Does anyone know what that check ball is for, and if I should block it or leave it open? I have to mount two carbs front to back, and the original base plate makes it so that I can't do this properly with out too much modification. Pictures below.
    Thank you.









  2. #2
    Join Date
    Jan 2013
    Location
    Constantine, MI
    Posts
    168

    Default

    Power valve blowout protection.

  3. #3
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,972

    Default

    Quote Originally Posted by hotstuff View Post
    Power valve blowout protection.
    http://www.holley.com/data/TechServi...wer_valves.pdf (Read end of page.)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  4. #4

    Default

    Thank you gentlemen. I left it unblocked and my little 428 drives like a dream. James

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