Quote:
Originally posted by Jordan Baker
As far as I can tell, the block is a 37 - 41 model while the heads are the later 49-53. The only number I can find on the block is a stamped M-13.
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Hi Jordan
Your motor looks like an early 21 stud model with water pumps on the heads. All the later ones had the water pumps on the lower block - the 8BA type (49-54) which we see a lot of here have the water hoses at the same point but pumps down low on the block.
Great stuff though!