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.
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Application Summary:

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.
AAM Long Description Automatic Transmission Flexplate
AAM Short Description Flexplate
AAM Standard Pack 1
Balance Internal
Bullet Point #1 NHRA and IHRA Legal For All Classes
Bullet Point #2 Includes SFI Certification Sticker
Bullet Point #3 Ideal For Street Applications
Bullet Point #4 To Extreme Duty Racing
Country of Origin (Primary) CN
Crankshaft Bolt Hole Quantity 6
Crankshift Bolt Hole Count 6
Dual Pattern Yes
Emission Code Legal US
Harmonized Tariff Code (Schedule B) 8708401110
Hazardous Material Code N
IHRA Legal Yes
Life Cycle Status Code 2
Life Cycle Status Description Available To Order
MSDS Required Flag N
MSDS Sheet Number N
NAFTA Preference Criterion Code B
NHRA Legal Yes
Outside Diameter (in) 12.84
SFI Approved Yes
SFI Certification Sticker Included
Tooth count 153
Warranty Time 12
Weight (lb) 5.50

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B&M 20237 Flexplate, 153 Tooth 55-85 Shortblock Chevy

  • Brand: B&M
  • Product Number: 20237
  • $95.86