Hi from IL

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lscaspall

Junior Member
Joined
Nov 26, 2023
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Location
Chicago
First Name
Scott
Truck Year
1974
Truck Model
K20
Engine Size
350
Hi all, I am restoring my deceased father's 1974 Chevy K20 Cheyenne that he purchased brand new that year. My father was a farmer and the truck went through many modifications over the years, including a swap from the original TH400 transmission to a 700R4. Not sure why didn't just replace the original tranny with another TH400. At any rate, I'm converting the truck back to original specs and discovered that the holes on the transmission crossmember do not line up with the mount holes on the NP203 adapter bracket (#376291). When setting the transmission in place, the adapter holes are about 1 inch rearward of the crossmember mounting holes. It is possible that the transmission crossmember was moved slightly forward when my father swapped the original TH400 for the 700R. I'm hoping someone may have some insight on this and be able to suggest a solution.
 

Mr Clean

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Location
North East Texas
First Name
Shawn
Truck Year
1982 & 1985
Truck Model
K10 Extra Cab w/ Proper SWB, & 85 K5 Blazer
Engine Size
454 BBC, & 383 Stroker
:welcome:
 

legopnuematic

Licensed Junk Dealer
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Location
MO
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Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
Welcome from Missouri.
 

JamesSam

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Location
VA
First Name
Sam
Truck Year
1987
Truck Model
Silverado V10
Engine Size
5.7 L 350 v8
Welcome from VA.
 

animal

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Location
Georgia
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Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

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