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Thread: 105mm Throttle Body

  1. #1
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    21

    Default 105mm Throttle Body

    When using a 105mm throttle body, which intake ducting size is best, 4" or 4.5"? Thanks.
    Herb
    '66 El Camino, 408LS/T56
    '66 Chevelle, 509/T56
    '63 C10, 454/4L80E

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    25,975

    Default

    The size that fits the O.D. of your throttle body. See page 5: https://documents.holley.com/199r10672-1.pdf (Holley EFI Billet 105mm Throttle Body Instruction Manual)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 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, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 M/T Street Comp tires.

  3. #3
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    21

    Default

    Thanks! Again!
    Herb
    '66 El Camino, 408LS/T56
    '66 Chevelle, 509/T56
    '63 C10, 454/4L80E

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