Ok I was poking around under the hood of the Olds today to try and figure out once and for all what engine was shoved in there.
Sadly I cannot get a good view of the side of the block to tell the size for sure. So far the markings I have found are "XD" on the front of the passenger side cylinder bank. The heads are marked H107 and the intake manifold is 10000516.
From a site I found the number from the intake would indicate its from a 78-81 301, in 78 XD on the block indicated a 301. However the H107 would indicate they are from a '77, which the XD in that year was the 400.
The engine block, heads and valve covers are all painted and well worn blue. The intake manifold is not painted so I'm thinking (and hoping) that someone stock the 301 intake on the 400 for some reason.
Any other easy ways to tell the two engines apart or am I going to have to wait until I can pull it and look at the side?
Sadly I cannot get a good view of the side of the block to tell the size for sure. So far the markings I have found are "XD" on the front of the passenger side cylinder bank. The heads are marked H107 and the intake manifold is 10000516.
From a site I found the number from the intake would indicate its from a 78-81 301, in 78 XD on the block indicated a 301. However the H107 would indicate they are from a '77, which the XD in that year was the 400.
The engine block, heads and valve covers are all painted and well worn blue. The intake manifold is not painted so I'm thinking (and hoping) that someone stock the 301 intake on the 400 for some reason.
Any other easy ways to tell the two engines apart or am I going to have to wait until I can pull it and look at the side?
