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OMC 4.3 block parts compatibility HELP

Lhuyett

New member
Hello everyone, I first want to thank anyone who can help with this question. I have a 4.3 #10172756 block I found a #10105867 block/complete engine without exhaust manifolds. My question is are the exhaust manifolds/intake ect. interchangeable? Thanks


 
Ayuh,..... Donno what the numbers are,..... Exhaust for sure will swap,.....

The intakes changed in '96,.....
 
Are those casting #s (found back by the bell housing) or GM serial numbers (front of block right next to the starboard side cyl head. Normally the serial #s have a T first (for Tonawanda assembly) or an R (for Romulus assembly). Casting #s denote the changes made.
The intakes changed from pre-vortec (12 bolt) to vortec in '96, other changes include the addition of the balance shaft, changes in the front timing cover and serpentine belts vs V belts.
As Bondo said the exhaust are all the same, but there are other differences to keep in mind if you want all your stuff to transfer over.

Default Title (rapidomarine.com)
check the section on block casting id, that might help
judging by this info I think you were looking at serial numbers.
 
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