Skip to product information
1 of 2

B&M Steel SFI Certified Flexplate - Big Block Chevrolet - 20233

B&M Steel SFI Certified Flexplate - Big Block Chevrolet - 20233

SKU: 20233
Regular price $143.95 USD
Regular price Sale price $143.95 USD
Sale Sold out

Overview:

As performance levels increase, an O.E. style flexplate just won't cut it and a stronger option is a necessity to prevent transmission and/or converter failure. B&M has you covered with our high performance flexplate designed for 1965-1990 Chevrolet big block 454ci (externally balanced) V8 engines with two piece rear main seal. Features include high tensile strength steel construction to resist elongation and cracking, dual bolt pattern 10.75 or 11.5-inch converter mounting locations, 168 tooth ring gear with double-sided welds for added strength and comes with SFI 29.1 safety certification insuring the ultimate in safety and performance. The assembly is then Zinc plated and treated with a Chromate Conversion Coating for added corrosion resistance and durability. B&M SFI approved flexplates are ideal for extreme duty race applications as well as street cars, tow vehicles or other vehicles needing the added protection and toughness that B&M has been delivering since 1953. Compatible with Powerglide, TH350, TH400 and TH700R4 automatic transmissions.

Features:

  • NHRA and IHRA Legal For All Classes
  • Includes SFI Certification Sticker
  • Ideal For Street Applications
  • Zinc Plated Chromate Finish
  • To Extreme Duty Racing
  • Proven B&M Quality

Year Make Model Submodel Engine Size
1990 Chevrolet C1500 Cheyenne 454/7.4 V8
1990 Chevrolet C1500 Scottsdale 454/7.4 V8
1990 Chevrolet C1500 Silverado 454/7.4 V8
1990 Chevrolet C1500 454 SS 454/7.4 V8
1990 Chevrolet C1500 WT 454/7.4 V8
1975 - 1986 Chevrolet C20 454/7.4 V8
1973 - 1986 Chevrolet C20 Suburban 454/7.4 V8
1970 - 1972 Chevrolet Biscayne 454/7.4 V8
1973 - 1974 Chevrolet Blazer 454/7.4 V8
1970 - 1975 Chevrolet Bel Air 454/7.4 V8
1970 - 1972 Chevrolet Brookwood 454/7.4 V8
1973 - 1974 Chevrolet C10 Pickup 454/7.4 V8
1973 - 1980 Chevrolet C10 Suburban 454/7.4 V8
1973 - 1974 Chevrolet C20 Pickup 454/7.4 V8
1989 - 1990 Chevrolet G30 454/7.4 V8
1970 - 1976 Chevrolet Impala 454/7.4 V8
1976 - 1980 Chevrolet K10 454/7.4 V8
1976 - 1978 Chevrolet K20 454/7.4 V8
1973 - 1985 Chevrolet K20 Suburban 454/7.4 V8
1977 - 1986 Chevrolet K30 454/7.4 V8
1988 - 1990 Chevrolet K3500 454/7.4 V8
1975 Chevrolet Laguna 454/7.4 V8
1975 Chevrolet Malibu Classic 454/7.4 V8
1970 - 1975 Chevrolet Monte Carlo 454/7.4 V8
1976 - 1979 Chevrolet P20 454/7.4 V8
1975 - 1990 Chevrolet P30 454/7.4 V8
1987 - 1988 Chevrolet R20 454/7.4 V8
1987 - 1988 Chevrolet R20 Suburban 454/7.4 V8
1989 Chevrolet R2500 Cheyenne 454/7.4 V8
1989 Chevrolet R2500 Scottsdale 454/7.4 V8
1989 Chevrolet R2500 Silverado 454/7.4 V8
1989 - 1990 Chevrolet R2500 Suburban 454/7.4 V8
1987 - 1988 Chevrolet R30 454/7.4 V8
1989 - 1990 Chevrolet R3500 454/7.4 V8
1987 - 1988 Chevrolet V20 Suburban 454/7.4 V8
1990 Chevrolet V2500 Suburban 454/7.4 V8
1987 - 1988 Chevrolet V30 454/7.4 V8
1989 - 1990 Chevrolet V3500 454/7.4 V8
1971 - 1974 Chevrolet El Camino 454/7.4 V8
1973 - 1974 Chevrolet G20 Van Base 454/7.4 V8
1973 - 1974 Chevrolet K10 Suburban 454/7.4 V8
1975 Chevrolet Caprice Estate Wagon 454/7.4 V8
1975 - 1976 Chevrolet Caprice Classic Sport 454/7.4 V8
1975 - 1976 Chevrolet Caprice Classic 454/7.4 V8
1976 Chevrolet Caprice Classic Estate 454/7.4 V8
1976 Chevrolet Caprice Classic Landau 454/7.4 V8
1970 - 1975 Chevrolet El Camino Base 454/7.4 V8
1976 Chevrolet G20 Beauville 454/7.4 V8
1976 Chevrolet G20 Chevy Van 454/7.4 V8
1975 - 1976 Chevrolet G30 Beauville 454/7.4 V8
1975 - 1976 Chevrolet G30 Chevy Van 454/7.4 V8
1975 - 1976 Chevrolet G30 Hi-Cube 454/7.4 V8
1988 Chevrolet G30 Sportvan 454/7.4 V8
1970 - 1972 Chevrolet Townsman 454/7.4 V8
1971 - 1972 GMC Sprint 454/7.4 V8
1970 - 1972 Chevrolet Chevelle Malibu 454/7.4 V8
1971 Chevrolet Chevelle Nomad 454/7.4 V8
1970 - 1972 Chevrolet Chevelle Base 454/7.4 V8
1970 - 1974 Chevrolet Corvette 454/7.4 V8
1970 Chevrolet El Camino Custom 454/7.4 V8
1970 Chevrolet El Camino SS 454/7.4 V8
1975 - 1986 Chevrolet C30 454/7.4 V8
1988 - 1990 Chevrolet C3500 454/7.4 V8
1973 Chevrolet Monte Carlo Base 454/7.4 V8
1973 Chevrolet Monte Carlo Landau 454/7.4 V8
1970 - 1971 Chevrolet Nova 454/7.4 V8
1973 - 1974 Chevrolet C30 Pickup 454/7.4 V8
1970 - 1974 Chevrolet Caprice 454/7.4 V8
1970 Chevrolet Chevelle Concours 454/7.4 V8
1978 - 1979 Chevrolet C10 Custom Deluxe 454/7.4 V8
1978 - 1979 Chevrolet C10 Scottsdale 454/7.4 V8
1978 - 1979 Chevrolet C10 Silverado 454/7.4 V8
1978 - 1979 Chevrolet C10 Big Ten 454/7.4 V8
1975 - 1980 Chevrolet C10 454/7.4 V8
1976 - 1978 Chevrolet K5 Blazer 454/7.4 V8
1978 - 1979 Chevrolet C10 Cheyenne 454/7.4 V8
1973 - 1974 Chevrolet K20 Pickup 454/7.4 V8
1973 - 1974 Chevrolet K30 Pickup 454/7.4 V8
1970 - 1971 Chevrolet Kingswood Base 454/7.4 V8
1971 Chevrolet Kingswood Estate 454/7.4 V8
1972 Chevrolet Kingswood 454/7.4 V8
1973 - 1974 Chevrolet Malibu Base 454/7.4 V8
1973 Chevrolet Monte Carlo S 454/7.4 V8

# of Teeth 168
Balance External
Brand B&M
California Proposition 65 Chemical Name Cadmium and cadmium compounds
California Proposition 65 Required Yes
Crankshift Bolt Hole Count 6
Dual Pattern Yes
Emission Code 5
IHRA Legal Yes
NHRA Legal Yes
Outside Diameter (in) 14.1
Product Type Automatic Transmission Flexplate
SFI Approved Yes
SFI Certification 29.1
SFI Certification Sticker Included
Warning California Proposition 65
Weight (lb) 7
View full details

Policies and FAQs

Return Policy

We accept returns on products within 30 days of delivery. Return shipping is the responsibility of the buyer unless we, the seller, are at fault.

Fault reasons include but are not limited to:
  • Buyer was shipped the wrong product
  • Buyer was shipped a damaged product
  • The product page had incorrect fitment and the part does not fit the Buyer's vehicle
 
The Buyer will not be refunded outbound shipping unless the Seller (Modern Day Muffler & Brake) is at fault.
 
In cases where the Buyer purchases and ships the return please note that if the Shipper (ex. USPS, FedEx, UPS, etc.) loses the return we will not be able to offer a refund as the Buyer must contact the Shipper and make a claim.
 
All products must be returned in original condition, meaning that the product must not be damaged, installed, or missing pieces/parts. If the product is not in original condition a deduction will be issued of up to 50% of the purchase price of the product.
 
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
 
When we, the seller, are at fault, please Contact Us for a return label, products returned with a shipping label not provided by the seller will not be refunded to the buyer. Please also note that our return labels are issued with the dimensions and weight of the original shipment, if the product is being returned in any box/package besides the original please Contact Us with the dimensions and weight.

Returns must be sent to this address:
Modern Day Muffler & Brake
774 Broad Street
Wadsworth, OH 44281
 
Products returned directly to a manufacturer or the incorrect address may be issued a deduction or denied a refund entirely.
 
If a product was delivered outside the 30 day return window or is no longer in original condition please contact us as we may be able to issue a refund in store credit and/or with a deduction. If this is the case please Contact Us as these situations are handled on a case by case basis.
 
If there are any questions, concerns, or doubts about return eligibility please Contact Us and we would be more than happy to assist you.

This page and policy were last updated: July 14th 2023

FAQs

This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.

Our kits include all of the solid metal lines for that section of the vehicle.

We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

  • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
  • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.

Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

Unfortunately we cannot offer single lines outside of kits

Yes, all are covered by the manufacturer's standard warranty. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash.

We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card.

Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something we have manufactured at time of sale.

Yes please send us a message through our custom orders page.

Yes, but items sent out of the continental U.S. may incur additional charges based on their destination

The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

Yes! Thank you for your military service!

Still have a question or concern?  Please contact use our contact us form!

Yes! Thank you for your military service!

Warranty Information

Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

Product Notices

*NOTE: Product images may not reflect actual product appeareance.