Are accessary bolt hole the same?
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Joined: Jan 2001
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From: Ohio
Are accessary bolt hole the same?
I'm about to order a after market AC for my truck. The compresser kit says it fits the cleveland engine and 400 but says nothing about the 351M. I have always assumed the accessary bolt pattern were the same for all 3 engines can anyone confirm this for me?
Thanks: Jeff
Thanks: Jeff
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Joined: Aug 2000
Posts: 1,127
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From: (near) Denver USA
It depends on how the accessory bracket(s) is designed.
The block and heads on a 351M and 400 are identical. Anything that fits on the outside of a 400 will fit on a 351M.
Bolt patterns that include both the block and heads (for example, a bracket that attaches to the water pump on one end and a cylinder head on the other end) will be different for 351C and 351M/400 engines, because of the 351C's shorter deck height.
Since the water pump is the same on all 351C/351M/400 engines, if a bracket had the right elongated hole(s), it could fit both engine types. Otherwise, the kit would have to include different brackets for the 351C and the 351M/400.
The block and heads on a 351M and 400 are identical. Anything that fits on the outside of a 400 will fit on a 351M.
Bolt patterns that include both the block and heads (for example, a bracket that attaches to the water pump on one end and a cylinder head on the other end) will be different for 351C and 351M/400 engines, because of the 351C's shorter deck height.
Since the water pump is the same on all 351C/351M/400 engines, if a bracket had the right elongated hole(s), it could fit both engine types. Otherwise, the kit would have to include different brackets for the 351C and the 351M/400.
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