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Thread: Identifying Commander 950 Throttle Body Size

  1. #1

    Default Identifying Commander 950 Throttle Body Size

    Hello, I recently purchased a '70 Oldsmobile with a 455 and a Holley Commander 950. Is there any way I can identify the size of the throttle body being used? Thanks, Michael

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
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    Yes, measure the diameter of the throttle blades.
    Four 1¾" diameter throttle blades is a 900 CFM TBI unit.
    Four 1½" diameter throttle blades is a 700 CFM TBI unit.
    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.

  3. #3

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    Thanks Danny! Looking forward to figuring this product out, and getting a better tune on the car. Thanks, Michael

  4. #4

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    My 900 cfm throttle body has arrived! Looking forward from upgrading from the 700 on my 455.

    Is there anything that needs to be configured in the software for the larger injectors? I did a quick look and didn't see anything that stood out. I planned on confirming throttle position values, etc. Anything else I need to be concerned with? Thanks, Michael

  5. #5
    Join Date
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    Quote Originally Posted by mcalvo View Post
    I planned on confirming throttle position values, etc. Anything else I need to be concerned with?
    Yes, completely retuning the C950 Main Fuel Map, due to larger fuel injectors.
    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.

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