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 1955-1985 400ci small block chevy V8 engines (externally balanced) 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
- Dual Pattern 10.75 and 11.5-Inch
- Includes SFI Certification Sticker
- Ideal For Street Applications
- Zinc Plated Chromate Finish
- To Extreme Duty Racing
- Proven B&M Quality
Fits 1955-1985 GM 400 cid small block engine. For externally balanced engines uses a 168 tooth ring gear. Has 10.75-inch and 11.5-inch bolt patterns. Compatible with Powerglide, TH350, TH400, and TH700R4 automation transmissions
Installation Notes:
Fits 1955-1985 GM 400 cid small block engine. For externally balanced engines uses a 168 tooth ring gear. Has 10.75-inch and 11.5-inch bolt patterns. Compatible with Powerglide, TH350, TH400, and TH700R4 automation transmissions
About B&M Racing
B&M® specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, and many other transmission products including cast deep aluminum transmission pans, transmission coolers, and automatic transmission fluid. B&M Performance & Off-Road has been at the vanguard of the growing automotive aftermarket since the early 1950s. Racers themselves, B&M’s founders identified the needs of local performance enthusiasts and developed products to fill those needs. B&M specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, automatic shift handles, extended transfer case handles, cast deep aluminum transmission pans, differential covers, transmission coolers, power steering coolers, automatic transmission fluid, and transmission accessories for performance street, truck, Jeep, and off-road applications.

Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make |
Model |
Years |
Engine |
Buick |
Gran Sport |
1967 |
6.6L / 400 / V8 |
Buick |
LeSabre |
1975 |
6.6L / 400 / V8 |
Buick |
Skylark |
1967 |
6.6L / 400 / V8 |
Buick |
Sportwagon |
1968 |
6.6L / 400 / V8 |
Buick |
Sportwagon |
1969 |
6.6L / 400 / V8 |
Chevrolet |
Bel Air |
1975 |
6.6L / 400 / V8 |
Chevrolet |
C10 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
C10 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
C10 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
C10 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
C10 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
C20 Suburban |
1976 |
6.6L / 400 / V8 |
Chevrolet |
C20 Suburban |
1977 |
6.6L / 400 / V8 |
Chevrolet |
C20 Suburban |
1978 |
6.6L / 400 / V8 |
Chevrolet |
C20 Suburban |
1979 |
6.6L / 400 / V8 |
Chevrolet |
C20 Suburban |
1980 |
6.6L / 400 / V8 |
Chevrolet |
C20 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
C20 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
C20 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
C20 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
C20 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
C30 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
C30 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
C30 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
C30 |
1979 |
7.4L / 454 / V8 |
Chevrolet |
Caprice |
1975 |
6.6L / 400 / V8 |
Chevrolet |
Caprice |
1976 |
6.6L / 400 / V8 |
Chevrolet |
El Camino |
1975 |
6.6L / 400 / V8 |
Chevrolet |
El Camino |
1976 |
6.6L / 400 / V8 |
Chevrolet |
G10 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1975 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
G20 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1975 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
G30 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
Impala |
1975 |
6.6L / 400 / V8 |
Chevrolet |
Impala |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K10 Suburban |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K10 Suburban |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K10 Suburban |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K10 Suburban |
1979 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1975 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
K10 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1975 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1979 |
6.6L / 400 / V8 |
Chevrolet |
K20 Suburban |
1980 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1975 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
K20 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
K30 |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K30 |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K30 |
1979 |
6.6L / 400 / V8 |
Chevrolet |
K30 |
1980 |
6.6L / 400 / V8 |
Chevrolet |
K5 Blazer |
1975 |
6.6L / 400 / V8 |
Chevrolet |
K5 Blazer |
1976 |
6.6L / 400 / V8 |
Chevrolet |
K5 Blazer |
1977 |
6.6L / 400 / V8 |
Chevrolet |
K5 Blazer |
1978 |
6.6L / 400 / V8 |
Chevrolet |
K5 Blazer |
1979 |
6.6L / 400 / V8 |
Chevrolet |
Laguna |
1975 |
6.6L / 400 / V8 |
Chevrolet |
Laguna |
1976 |
6.6L / 400 / V8 |
Chevrolet |
Malibu |
1975 |
6.6L / 400 / V8 |
Chevrolet |
Malibu |
1976 |
6.6L / 400 / V8 |
Chevrolet |
Monte Carlo |
1975 |
6.6L / 400 / V8 |
Chevrolet |
Monte Carlo |
1976 |
6.6L / 400 / V8 |
GMC |
C1500 |
1979 |
6.6L / 400 / V8 |
GMC |
C1500 |
1980 |
6.6L / 400 / V8 |
GMC |
C15 |
1976 |
6.6L / 400 / V8 |
GMC |
C15 |
1978 |
6.6L / 400 / V8 |
GMC |
C25 Suburban |
1978 |
6.6L / 400 / V8 |
GMC |
C2500 Suburban |
1980 |
6.6L / 400 / V8 |
GMC |
C2500 |
1979 |
6.6L / 400 / V8 |
GMC |
C25 |
1976 |
6.6L / 400 / V8 |
GMC |
C25 |
1977 |
6.6L / 400 / V8 |
GMC |
C25 |
1978 |
6.6L / 400 / V8 |
GMC |
C3500 |
1979 |
6.6L / 400 / V8 |
GMC |
C35 |
1976 |
6.6L / 400 / V8 |
GMC |
C35 |
1977 |
6.6L / 400 / V8 |
GMC |
C35 |
1978 |
6.6L / 400 / V8 |
GMC |
G1500 |
1979 |
6.6L / 400 / V8 |
GMC |
G15 |
1976 |
6.6L / 400 / V8 |
GMC |
G2500 |
1979 |
6.6L / 400 / V8 |
GMC |
G2500 |
1980 |
6.6L / 400 / V8 |
GMC |
G25 |
1975 |
6.6L / 400 / V8 |
GMC |
G25 |
1976 |
6.6L / 400 / V8 |
GMC |
G25 |
1977 |
6.6L / 400 / V8 |
GMC |
G25 |
1978 |
6.6L / 400 / V8 |
GMC |
G3500 |
1979 |
6.6L / 400 / V8 |
GMC |
G3500 |
1980 |
6.6L / 400 / V8 |
GMC |
G35 |
1975 |
6.6L / 400 / V8 |
GMC |
G35 |
1976 |
6.6L / 400 / V8 |
GMC |
G35 |
1977 |
6.6L / 400 / V8 |
GMC |
G35 |
1978 |
6.6L / 400 / V8 |
GMC |
Jimmy |
1975 |
6.6L / 400 / V8 |
GMC |
Jimmy |
1976 |
6.6L / 400 / V8 |
GMC |
Jimmy |
1977 |
6.6L / 400 / V8 |
GMC |
Jimmy |
1978 |
6.6L / 400 / V8 |
GMC |
Jimmy |
1979 |
6.6L / 400 / V8 |
GMC |
K15 Suburban |
1975 |
6.6L / 400 / V8 |
GMC |
K15 Suburban |
1976 |
6.6L / 400 / V8 |
GMC |
K15 Suburban |
1977 |
6.6L / 400 / V8 |
GMC |
K15 Suburban |
1978 |
6.6L / 400 / V8 |
GMC |
K1500 Suburban |
1979 |
6.6L / 400 / V8 |
GMC |
K1500 Suburban |
1980 |
6.6L / 400 / V8 |
GMC |
K1500 |
1979 |
6.6L / 400 / V8 |
GMC |
K1500 |
1980 |
6.6L / 400 / V8 |
GMC |
K15 |
1975 |
6.6L / 400 / V8 |
GMC |
K15 |
1976 |
6.6L / 400 / V8 |
GMC |
K15 |
1977 |
6.6L / 400 / V8 |
GMC |
K15 |
1978 |
6.6L / 400 / V8 |
GMC |
K25 Suburban |
1975 |
6.6L / 400 / V8 |
GMC |
K25 Suburban |
1976 |
6.6L / 400 / V8 |
GMC |
K25 Suburban |
1977 |
6.6L / 400 / V8 |
GMC |
K25 Suburban |
1978 |
6.6L / 400 / V8 |
GMC |
K2500 Suburban |
1979 |
6.6L / 400 / V8 |
GMC |
K2500 Suburban |
1980 |
6.6L / 400 / V8 |
GMC |
K2500 |
1979 |
6.6L / 400 / V8 |
GMC |
K2500 |
1980 |
6.6L / 400 / V8 |
GMC |
K25 |
1975 |
6.6L / 400 / V8 |
GMC |
K25 |
1976 |
6.6L / 400 / V8 |
GMC |
K25 |
1977 |
6.6L / 400 / V8 |
GMC |
K25 |
1978 |
6.6L / 400 / V8 |
GMC |
K3500 |
1979 |
6.6L / 400 / V8 |
GMC |
K3500 |
1980 |
6.6L / 400 / V8 |
GMC |
K35 |
1977 |
6.6L / 400 / V8 |
GMC |
K35 |
1978 |
6.6L / 400 / V8 |
GMC |
Sprint |
1975 |
6.6L / 400 / V8 |
GMC |
Sprint |
1976 |
6.6L / 400 / V8 |
Oldsmobile |
442 |
1968 |
6.6L / 400 / V8 |
Oldsmobile |
442 |
1969 |
6.6L / 400 / V8 |
Oldsmobile |
98 |
1975 |
6.6L / 400 / V8 |
Oldsmobile |
Custom Cruiser |
1975 |
6.6L / 400 / V8 |
Oldsmobile |
Cutlass |
1968 |
6.6L / 400 / V8 |
Oldsmobile |
Delta 88 |
1975 |
6.6L / 400 / V8 |
Oldsmobile |
Vista Cruiser |
1968 |
6.6L / 400 / V8 |
Oldsmobile |
Vista Cruiser |
1969 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1968 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1969 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1970 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1971 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1972 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1973 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1974 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1975 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1976 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1977 |
6.6L / 400 / V8 |
Pontiac |
Bonneville |
1978 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1968 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1969 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1970 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1971 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1972 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1973 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1974 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1975 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1976 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1977 |
6.6L / 400 / V8 |
Pontiac |
Catalina |
1978 |
6.6L / 400 / V8 |
Pontiac |
Executive |
1968 |
6.6L / 400 / V8 |
Pontiac |
Executive |
1969 |
6.6L / 400 / V8 |
Pontiac |
Executive |
1970 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1968 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1969 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1970 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1971 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1972 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1973 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1974 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1975 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1976 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1977 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1978 |
6.6L / 400 / V8 |
Pontiac |
Firebird |
1979 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1968 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1969 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1970 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1971 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1972 |
6.6L / 400 / V8 |
Pontiac |
GTO |
1973 |
6.6L / 400 / V8 |
Pontiac |
Grand Am |
1973 |
6.6L / 400 / V8 |
Pontiac |
Grand Am |
1974 |
6.6L / 400 / V8 |
Pontiac |
Grand Am |
1975 |
6.6L / 400 / V8 |
Pontiac |
Grand LeMans |
1975 |
6.6L / 400 / V8 |
Pontiac |
Grand LeMans |
1976 |
6.6L / 400 / V8 |
Pontiac |
Grand LeMans |
1977 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1968 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1969 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1970 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1971 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1972 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1973 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1974 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1975 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1976 |
6.6L / 400 / V8 |
Pontiac |
Grand Prix |
1977 |
6.6L / 400 / V8 |
Pontiac |
Grand Safari |
1975 |
6.6L / 400 / V8 |
Pontiac |
Grand Safari |
1976 |
6.6L / 400 / V8 |
Pontiac |
Grand Safari |
1977 |
6.6L / 400 / V8 |
Pontiac |
Grand Safari |
1978 |
6.6L / 400 / V8 |
Pontiac |
Grandville |
1972 |
6.6L / 400 / V8 |
Pontiac |
Grandville |
1973 |
6.6L / 400 / V8 |
Pontiac |
Grandville |
1974 |
6.6L / 400 / V8 |
Pontiac |
Grandville |
1975 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1968 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1969 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1970 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1971 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1972 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1973 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1974 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1975 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1976 |
6.6L / 400 / V8 |
Pontiac |
LeMans |
1977 |
6.6L / 400 / V8 |
Pontiac |
Tempest |
1968 |
6.6L / 400 / V8 |
Pontiac |
Tempest |
1969 |
6.6L / 400 / V8 |
Pontiac |
Tempest |
1970 |
6.6L / 400 / V8 |