Wehrli 73-87 GM Square Body Chassis w/ Duramax Engine Swap (Allison/ZF6) Trans Crossmember Wehrli 73-87 GM Square Body Chassis w/ Duramax Engine Swap (Allison/ZF6) Trans Crossmember Wehrli So, you've decided to ditch the boat anchor 6.2L or 6.5L diesel or the old SBC or BBC under the hood of your square body pickup. You love the way your truck looks and how you feel behind the wheel of it...but also like to be able to merge into traffic and occasionally pull a trailer or haul something heavy in the bed. You could have gone LS swap, but really like the power delivery of your newer diesel pickup and have decided that a 6.6L Duramax will give you the best of both worlds - classic looks with modern performance. Once you've got the donor engine sitting in the chassis (check out our mount kit WCF100173), the next order of business is to back it up with the right transmission to help put the power to the wheels. The WCFab Transmission Crossmember kit provides what you need to bolt up an Allison 1000 or ZF6 trans to a Duramax Diesel Engine in your 1973-1987 GM 3/4 or 1 Ton C/K Square Body Truck Chassis (Chevy C20, C30, K30). Bolt in transmission crossmember for Allison 1000 5 or 6 speed automatic or ZF6 manual to factory location at frame rail. Provides Driveshaft Clearance for Up to 6” of Suspension Lift. Intended for use with NP205 Transfer Case and Advance Adapters Conversion Kit in 4WD Applications. Recommended for use with LB7/LLY/LBZ/LMM/LML Duramax HD Engine Swap Mounts for 1973-1987 Square Body Chevy Chassis (WCF100173).This Part Fits: Year Make Model Submodel 1975-1981 Chevrolet K20 Cheyenne 1981-1986 Chevrolet K20 Custom 1975-1980 Chevrolet K20 Custom Deluxe 1981 Chevrolet K20 Deluxe 1975-1986 Chevrolet K20 Scottsdale 1975-1983,1985-1986 Chevrolet K20 Silverado 1973-1974 Chevrolet K20 Pickup Base 1973-1974 Chevrolet K20 Suburban Base 1981-1986 Chevrolet K20 Suburban Custom 1975-1980 Chevrolet K20 Suburban Custom Deluxe 1981 Chevrolet K20 Suburban Deluxe 1975-1980,1982,1984-1986 Chevrolet K20 Suburban Scottsdale 1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado 1977-1981 Chevrolet K30 Cheyenne 1981-1986 Chevrolet K30 Custom 1977-1980 Chevrolet K30 Custom Deluxe 1981 Chevrolet K30 Deluxe 1977-1986 Chevrolet K30 Scottsdale 1977-1986 Chevrolet K30 Silverado 1973-1974 Chevrolet K30 Pickup Base 1988 Chevrolet R20 Cheyenne 1987-1988 Chevrolet R20 Custom Deluxe 1987-1988 Chevrolet R20 Scottsdale 1987-1988 Chevrolet R20 Silverado 1987 Chevrolet R20 Suburban Custom Deluxe 1987-1988 Chevrolet R20 Suburban Scottsdale 1987-1988 Chevrolet R20 Suburban Silverado 1989 Chevrolet R2500 Cheyenne 1989 Chevrolet R2500 Scottsdale 1989 Chevrolet R2500 Silverado 1989-1991 Chevrolet R2500 Suburban Scottsdale 1989-1991 Chevrolet R2500 Suburban Silverado 1988 Chevrolet R30 Cheyenne 1987-1988 Chevrolet R30 Custom Deluxe 1987-1988 Chevrolet R30 Scottsdale 1987-1988 Chevrolet R30 Silverado 1989-1991 Chevrolet R3500 Cheyenne 1989-1990 Chevrolet R3500 Scottsdale 1989-1991 Chevrolet R3500 Silverado 1987 Chevrolet V20 Custom Deluxe 1987 Chevrolet V20 Scottsdale 1987 Chevrolet V20 Silverado 1987 Chevrolet V20 Suburban Custom Deluxe 1987-1988 Chevrolet V20 Suburban Scottsdale 1987-1988 Chevrolet V20 Suburban Silverado 1989-1991 Chevrolet V2500 Suburban Scottsdale 1989-1991 Chevrolet V2500 Suburban Silverado 1988 Chevrolet V30 Cheyenne 1987-1988 Chevrolet V30 Custom Deluxe 1987-1988 Chevrolet V30 Scottsdale 1987-1988 Chevrolet V30 Silverado 1989-1991 Chevrolet V3500 Cheyenne 1989-1990 Chevrolet V3500 Scottsdale 1989-1991 Chevrolet V3500 Silverado 1975-1978 GMC K25 Base 1975-1978 GMC K25 High Sierra 1975-1978 GMC K25 Sierra Classic 1975-1978 GMC K25 Sierra Grande 1975-1978 GMC K25 Suburban Base 1975-1978 GMC K25 Suburban High Sierra 1975-1978 GMC K25 Suburban Sierra Classic 1975-1978 GMC K25 Suburban Sierra Grande 1973-1974 GMC K25/K2500 Pickup Base 1973-1974 GMC K25/K2500 Suburban Base 1979-1986 GMC K2500 Base 1979-1986 GMC K2500 High Sierra 1979-1986 GMC K2500 Sierra Classic 1979-1982 GMC K2500 Sierra Grande 1979-1986 GMC K2500 Suburban Base 1979-1986 GMC K2500 Suburban High Sierra 1979-1986 GMC K2500 Suburban Sierra Classic 1979-1982 GMC K2500 Suburban Sierra Grande 1977-1978 GMC K35 Base 1977-1978 GMC K35 High Sierra 1977-1978 GMC K35 Sierra Classic 1977-1978 GMC K35 Sierra Grande 1973-1974 GMC K35/K3500 Pickup Base 1979-1986 GMC K3500 Base 1979-1986 GMC K3500 High Sierra 1979-1986 GMC K3500 Sierra Classic 1979-1982 GMC K3500 Sierra Grande 1987-1989 GMC R2500 Base 1987-1989 GMC R2500 High Sierra 1987-1989 GMC R2500 Sierra Classic 1987-1991 GMC R2500 Suburban Base 1987 GMC R2500 Suburban High Sierra 1987-1989 GMC R2500 Suburban Sierra Classic 1990 GMC R2500 Suburban SLE 1987-1991 GMC R3500 Base 1987-1989 GMC R3500 High Sierra 1987-1989 GMC R3500 Sierra Classic 1990-1991 GMC R3500 SLE 1987 GMC V2500 Base 1987 GMC V2500 High Sierra 1987 GMC V2500 Sierra Classic 1987-1991 GMC V2500 Suburban Base 1987 GMC V2500 Suburban High Sierra 1987-1989 GMC V2500 Suburban Sierra Classic 1990 GMC V2500 Suburban SLE 1987-1991 GMC V3500 Base 1987-1989 GMC V3500 High Sierra 1987-1989 GMC V3500 Sierra Classic 1990-1991 GMC V3500 SLE

Wehrli 73-87 GM Square Body Chassis w/ Duramax Engine Swap (Allison/ZF6) Trans Crossmember

Code: WCFWCF100177
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So, you've decided to ditch the boat anchor 6.2L or 6.5L diesel or the old SBC or BBC under the hood of your square body pickup. You love the way your truck looks and how you feel behind the wheel of it...but also like to be able to merge into traffic and occasionally pull a trailer or haul something heavy in the bed. You could have gone LS swap, but really like the power delivery of your newer diesel pickup and have decided that a 6.6L Duramax will give you the best of both worlds - classic looks with modern performance. Once you've got the donor engine sitting in the chassis (check out our mount kit WCF100173), the next order of business is to back it up with the right transmission to help put the power to the wheels. The WCFab Transmission Crossmember kit provides what you need to bolt up an Allison 1000 or ZF6 trans to a Duramax Diesel Engine in your 1973-1987 GM 3/4 or 1 Ton C/K Square Body Truck Chassis (Chevy C20, C30, K30). Bolt in transmission crossmember for Allison 1000 5 or 6 speed automatic or ZF6 manual to factory location at frame rail. Provides Driveshaft Clearance for Up to 6” of Suspension Lift. Intended for use with NP205 Transfer Case and Advance Adapters Conversion Kit in 4WD Applications. Recommended for use with LB7/LLY/LBZ/LMM/LML Duramax HD Engine Swap Mounts for 1973-1987 Square Body Chevy Chassis (WCF100173).

This Part Fits:

Year Make Model Submodel
1975-1981 Chevrolet K20 Cheyenne
1981-1986 Chevrolet K20 Custom
1975-1980 Chevrolet K20 Custom Deluxe
1981 Chevrolet K20 Deluxe
1975-1986 Chevrolet K20 Scottsdale
1975-1983,1985-1986 Chevrolet K20 Silverado
1973-1974 Chevrolet K20 Pickup Base
1973-1974 Chevrolet K20 Suburban Base
1981-1986 Chevrolet K20 Suburban Custom
1975-1980 Chevrolet K20 Suburban Custom Deluxe
1981 Chevrolet K20 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet K20 Suburban Scottsdale
1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado
1977-1981 Chevrolet K30 Cheyenne
1981-1986 Chevrolet K30 Custom
1977-1980 Chevrolet K30 Custom Deluxe
1981 Chevrolet K30 Deluxe
1977-1986 Chevrolet K30 Scottsdale
1977-1986 Chevrolet K30 Silverado
1973-1974 Chevrolet K30 Pickup Base
1988 Chevrolet R20 Cheyenne
1987-1988 Chevrolet R20 Custom Deluxe
1987-1988 Chevrolet R20 Scottsdale
1987-1988 Chevrolet R20 Silverado
1987 Chevrolet R20 Suburban Custom Deluxe
1987-1988 Chevrolet R20 Suburban Scottsdale
1987-1988 Chevrolet R20 Suburban Silverado
1989 Chevrolet R2500 Cheyenne
1989 Chevrolet R2500 Scottsdale
1989 Chevrolet R2500 Silverado
1989-1991 Chevrolet R2500 Suburban Scottsdale
1989-1991 Chevrolet R2500 Suburban Silverado
1988 Chevrolet R30 Cheyenne
1987-1988 Chevrolet R30 Custom Deluxe
1987-1988 Chevrolet R30 Scottsdale
1987-1988 Chevrolet R30 Silverado
1989-1991 Chevrolet R3500 Cheyenne
1989-1990 Chevrolet R3500 Scottsdale
1989-1991 Chevrolet R3500 Silverado
1987 Chevrolet V20 Custom Deluxe
1987 Chevrolet V20 Scottsdale
1987 Chevrolet V20 Silverado
1987 Chevrolet V20 Suburban Custom Deluxe
1987-1988 Chevrolet V20 Suburban Scottsdale
1987-1988 Chevrolet V20 Suburban Silverado
1989-1991 Chevrolet V2500 Suburban Scottsdale
1989-1991 Chevrolet V2500 Suburban Silverado
1988 Chevrolet V30 Cheyenne
1987-1988 Chevrolet V30 Custom Deluxe
1987-1988 Chevrolet V30 Scottsdale
1987-1988 Chevrolet V30 Silverado
1989-1991 Chevrolet V3500 Cheyenne
1989-1990 Chevrolet V3500 Scottsdale
1989-1991 Chevrolet V3500 Silverado
1975-1978 GMC K25 Base
1975-1978 GMC K25 High Sierra
1975-1978 GMC K25 Sierra Classic
1975-1978 GMC K25 Sierra Grande
1975-1978 GMC K25 Suburban Base
1975-1978 GMC K25 Suburban High Sierra
1975-1978 GMC K25 Suburban Sierra Classic
1975-1978 GMC K25 Suburban Sierra Grande
1973-1974 GMC K25/K2500 Pickup Base
1973-1974 GMC K25/K2500 Suburban Base
1979-1986 GMC K2500 Base
1979-1986 GMC K2500 High Sierra
1979-1986 GMC K2500 Sierra Classic
1979-1982 GMC K2500 Sierra Grande
1979-1986 GMC K2500 Suburban Base
1979-1986 GMC K2500 Suburban High Sierra
1979-1986 GMC K2500 Suburban Sierra Classic
1979-1982 GMC K2500 Suburban Sierra Grande
1977-1978 GMC K35 Base
1977-1978 GMC K35 High Sierra
1977-1978 GMC K35 Sierra Classic
1977-1978 GMC K35 Sierra Grande
1973-1974 GMC K35/K3500 Pickup Base
1979-1986 GMC K3500 Base
1979-1986 GMC K3500 High Sierra
1979-1986 GMC K3500 Sierra Classic
1979-1982 GMC K3500 Sierra Grande
1987-1989 GMC R2500 Base
1987-1989 GMC R2500 High Sierra
1987-1989 GMC R2500 Sierra Classic
1987-1991 GMC R2500 Suburban Base
1987 GMC R2500 Suburban High Sierra
1987-1989 GMC R2500 Suburban Sierra Classic
1990 GMC R2500 Suburban SLE
1987-1991 GMC R3500 Base
1987-1989 GMC R3500 High Sierra
1987-1989 GMC R3500 Sierra Classic
1990-1991 GMC R3500 SLE
1987 GMC V2500 Base
1987 GMC V2500 High Sierra
1987 GMC V2500 Sierra Classic
1987-1991 GMC V2500 Suburban Base
1987 GMC V2500 Suburban High Sierra
1987-1989 GMC V2500 Suburban Sierra Classic
1990 GMC V2500 Suburban SLE
1987-1991 GMC V3500 Base
1987-1989 GMC V3500 High Sierra
1987-1989 GMC V3500 Sierra Classic
1990-1991 GMC V3500 SLE
So, you've decided to ditch the boat anchor 6.2L or 6.5L diesel or the old SBC or BBC under the hood of your square body pickup. You love the way your truck looks and how you feel behind the wheel of it...but also like to be able to merge into traffic and occasionally pull a trailer or haul something heavy in the bed. You could have gone LS swap, but really like the power delivery of your newer diesel pickup and have decided that a 6.6L Duramax will give you the best of both worlds - classic looks with modern performance. Once you've got the donor engine sitting in the chassis (check out our mount kit WCF100173), the next order of business is to back it up with the right transmission to help put the power to the wheels. The WCFab Transmission Crossmember kit provides what you need to bolt up an Allison 1000 or ZF6 trans to a Duramax Diesel Engine in your 1973-1987 GM 3/4 or 1 Ton C/K Square Body Truck Chassis (Chevy C20, C30, K30). Bolt in transmission crossmember for Allison 1000 5 or 6 speed automatic or ZF6 manual to factory location at frame rail. Provides Driveshaft Clearance for Up to 6” of Suspension Lift. Intended for use with NP205 Transfer Case and Advance Adapters Conversion Kit in 4WD Applications. Recommended for use with LB7/LLY/LBZ/LMM/LML Duramax HD Engine Swap Mounts for 1973-1987 Square Body Chevy Chassis (WCF100173).

This Part Fits:

Year Make Model Submodel
1975-1981 Chevrolet K20 Cheyenne
1981-1986 Chevrolet K20 Custom
1975-1980 Chevrolet K20 Custom Deluxe
1981 Chevrolet K20 Deluxe
1975-1986 Chevrolet K20 Scottsdale
1975-1983,1985-1986 Chevrolet K20 Silverado
1973-1974 Chevrolet K20 Pickup Base
1973-1974 Chevrolet K20 Suburban Base
1981-1986 Chevrolet K20 Suburban Custom
1975-1980 Chevrolet K20 Suburban Custom Deluxe
1981 Chevrolet K20 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet K20 Suburban Scottsdale
1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado
1977-1981 Chevrolet K30 Cheyenne
1981-1986 Chevrolet K30 Custom
1977-1980 Chevrolet K30 Custom Deluxe
1981 Chevrolet K30 Deluxe
1977-1986 Chevrolet K30 Scottsdale
1977-1986 Chevrolet K30 Silverado
1973-1974 Chevrolet K30 Pickup Base
1988 Chevrolet R20 Cheyenne
1987-1988 Chevrolet R20 Custom Deluxe
1987-1988 Chevrolet R20 Scottsdale
1987-1988 Chevrolet R20 Silverado
1987 Chevrolet R20 Suburban Custom Deluxe
1987-1988 Chevrolet R20 Suburban Scottsdale
1987-1988 Chevrolet R20 Suburban Silverado
1989 Chevrolet R2500 Cheyenne
1989 Chevrolet R2500 Scottsdale
1989 Chevrolet R2500 Silverado
1989-1991 Chevrolet R2500 Suburban Scottsdale
1989-1991 Chevrolet R2500 Suburban Silverado
1988 Chevrolet R30 Cheyenne
1987-1988 Chevrolet R30 Custom Deluxe
1987-1988 Chevrolet R30 Scottsdale
1987-1988 Chevrolet R30 Silverado
1989-1991 Chevrolet R3500 Cheyenne
1989-1990 Chevrolet R3500 Scottsdale
1989-1991 Chevrolet R3500 Silverado
1987 Chevrolet V20 Custom Deluxe
1987 Chevrolet V20 Scottsdale
1987 Chevrolet V20 Silverado
1987 Chevrolet V20 Suburban Custom Deluxe
1987-1988 Chevrolet V20 Suburban Scottsdale
1987-1988 Chevrolet V20 Suburban Silverado
1989-1991 Chevrolet V2500 Suburban Scottsdale
1989-1991 Chevrolet V2500 Suburban Silverado
1988 Chevrolet V30 Cheyenne
1987-1988 Chevrolet V30 Custom Deluxe
1987-1988 Chevrolet V30 Scottsdale
1987-1988 Chevrolet V30 Silverado
1989-1991 Chevrolet V3500 Cheyenne
1989-1990 Chevrolet V3500 Scottsdale
1989-1991 Chevrolet V3500 Silverado
1975-1978 GMC K25 Base
1975-1978 GMC K25 High Sierra
1975-1978 GMC K25 Sierra Classic
1975-1978 GMC K25 Sierra Grande
1975-1978 GMC K25 Suburban Base
1975-1978 GMC K25 Suburban High Sierra
1975-1978 GMC K25 Suburban Sierra Classic
1975-1978 GMC K25 Suburban Sierra Grande
1973-1974 GMC K25/K2500 Pickup Base
1973-1974 GMC K25/K2500 Suburban Base
1979-1986 GMC K2500 Base
1979-1986 GMC K2500 High Sierra
1979-1986 GMC K2500 Sierra Classic
1979-1982 GMC K2500 Sierra Grande
1979-1986 GMC K2500 Suburban Base
1979-1986 GMC K2500 Suburban High Sierra
1979-1986 GMC K2500 Suburban Sierra Classic
1979-1982 GMC K2500 Suburban Sierra Grande
1977-1978 GMC K35 Base
1977-1978 GMC K35 High Sierra
1977-1978 GMC K35 Sierra Classic
1977-1978 GMC K35 Sierra Grande
1973-1974 GMC K35/K3500 Pickup Base
1979-1986 GMC K3500 Base
1979-1986 GMC K3500 High Sierra
1979-1986 GMC K3500 Sierra Classic
1979-1982 GMC K3500 Sierra Grande
1987-1989 GMC R2500 Base
1987-1989 GMC R2500 High Sierra
1987-1989 GMC R2500 Sierra Classic
1987-1991 GMC R2500 Suburban Base
1987 GMC R2500 Suburban High Sierra
1987-1989 GMC R2500 Suburban Sierra Classic
1990 GMC R2500 Suburban SLE
1987-1991 GMC R3500 Base
1987-1989 GMC R3500 High Sierra
1987-1989 GMC R3500 Sierra Classic
1990-1991 GMC R3500 SLE
1987 GMC V2500 Base
1987 GMC V2500 High Sierra
1987 GMC V2500 Sierra Classic
1987-1991 GMC V2500 Suburban Base
1987 GMC V2500 Suburban High Sierra
1987-1989 GMC V2500 Suburban Sierra Classic
1990 GMC V2500 Suburban SLE
1987-1991 GMC V3500 Base
1987-1989 GMC V3500 High Sierra
1987-1989 GMC V3500 Sierra Classic
1990-1991 GMC V3500 SLE