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Discussion Starter · #1 · (Edited)
Can anyone share their experiences with transplanting BB ('76 454) into a 70 C10?
We have already found that mounts are the first challenge and are trying to decide if we should go with the stock BB bolt through setup (larger perch hole) or use a 73 style (clamshell?). Any feedback would be helpful.
Other unknowns are
  1. firewall clearance for HEI distributor
  2. are there rad/fan clearance issues?
  3. Best header brand fitment. What have you used?
Any and all experiences are welcome.
Cheers
 

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Big block Chevelle headers work well if you want ground clearance, allows you to tuck the exhaust between the frame rails. You will need a tubular transmission crossmember and will need to modify the trans shift linkage with these headers as they are considered "mid-length". The engine frame mounts will use the front two holes in the frame. You should not have issues with HEI clearance at the firewall. These trucks all used a short water pump so a 76 motor will require trimming the fan shroud.
 
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