Doug’s Headers on 64 A body 4 speed
BUT- which ones did you use?
These are listed for the early As in most all parts listings now (I just used RockAuto as an example, but NAPA/O'Really/Autozone etc. are the same...); but that number is totally, completely, and unequivicably WRONG!
2266 Series biscuit:
This is the correct 2338 series biscuit:
Note the difference!
Those headers are extremely tight in the engine compartment, and any deviation in the height of the engine mounting from stock will result in clearance issues such as you described, especially on the driver's side. The passenger side has a bit more room to work with, and may not interfere as badly.
So, if you used the 2266 mounts, swap them out for the 2338.
If you can't find the 2338s anywhere, use 2710 mounts (ex.: '91 Dodge D250 Cummins) which is the same thickness and has the added benefit of built-in torque limiters (negating the need for a torque strap or chain).
2710 series:
Okay, you used new mounts.
BUT- which ones did you use?
These are listed for the early As in most all parts listings now (I just used RockAuto as an example, but NAPA/O'Really/Autozone etc. are the same...); but that number is totally, completely, and unequivicably WRONG!
2266 Series biscuit:
This is the correct 2338 series biscuit:
Note the difference!
Those headers are extremely tight in the engine compartment, and any deviation in the height of the engine mounting from stock will result in clearance issues such as you described, especially on the driver's side. The passenger side has a bit more room to work with, and may not interfere as badly.
So, if you used the 2266 mounts, swap them out for the 2338.
If you can't find the 2338s anywhere, use 2710 mounts (ex.: '91 Dodge D250 Cummins) which is the same thickness and has the added benefit of built-in torque limiters (negating the need for a torque strap or chain).
2710 series:
