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Product Summary

Chevy Small Block V8, 700R4, Powerglide, TH350, TH400

    Key Specs

    MFG. Part #20237
    BrandB&M
    Engine BalanceInternal
    SFI Rating29.1

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    B&M 20237 Details

    The B&M Racing SFI approved Flexplates are ideal for extreme duty race applications as well as street cars. These flexplates are SFI 29.1 approved, and legal for use in both NHRA and IHRA sanctioning bodies.

    • NHRA and IHRA Legal For All Classes
    • Includes SFI Certification Sticker
    • Ideal For Street Applications
    • To Extreme Duty Racing

    Application

    Fits 1955 to 1985 GM small block V8 engines except the 400 cid engine. Uses a 153 tooth ring gear. Has 10.75 inch bolt pattern. Compatible with Powerglide, TH350, TH400, and TH700R4 automatic transmissions.

    B&M 20237 Specifications

    KEY SPECS
    MFG. Part #20237
    BrandB&M
    Engine BalanceInternal
    SFI Rating29.1
    GENERAL
    Outside Diameter12.84"
    Tooth Count153
    Weight5.5 lbs.
    Sold in QuantityEach
    GTIN Code019695202378
    Crankshaft Bolt Hole Count6
    Dual PatternYes
    NHRA LegalYes
    IHRA LegalYes