427 Fe
C5AE-6015-D
C5AE-6015-H
C6AE-6015-C
C7AE-6015-A
These are all solid lifter block sideoilers.
In 68 the hyd lifter sideoiler block went into production.
Those were...
C8AE-6015-B, H or A.
Then there are the 70's service blocks. Those have no casting number and have vertical ribs on the side like many other 70's era blocks. Those were over the counter blocks sold as service replacements. Also hyd lifter blocks.
You have quite a bit of homework to do. AMP hit on the side oil galley on the side of the block. That's on the left (dr) side of the block and has 3 allen plugs above the crossbolts. There is a "8" shaped boss on the lower left rear of the block. That should have 2 allen plugs right above each other. One connects the rear oil galley, the other the oil pressure releif valve. The left lower front of the block (or the lower right side if your standing in front of it) has the front oil galley plug. As mentioned all sideoilers have crossbolted maincaps on #2,3 and 4 mains. These crossbolts 3 on each side of the block are right above the skirt area of the block. Sideoiler blocks also always had steel screw in freeze plugs.
Now there are the 427 blocks that were cast as sideoilers but machined as topoilers. Those can and will have some of the same casting numbers listed above. Those were used in marine and other automotive and industrial applications. The marine versions have BRASS screw in freeze plugs. On those blocks the front, side and rear where the sideoiler passages are normally drilled....are not drilled or plugged on those blocks. Some guys see the cast in sideoiler hump and features cast in and assume it't the real deal. When it's really the topoiler version. Still with me here??
Lots to learn in a short timeI hope someone can post a link to some pics. I lost ALL my saved files yesterday.
a picture is worth a thousand words as they say. I had a bunch too. If your skunked I have a block here I'll take some new pics and send them to you. Then the bore size needs to be addressed. For the most part sideoiler cyl bores can't go much over .030. Although guys are known to push them some .040-.045. .030 is a fairly safe limit. So you want a block as close to std bore as possible. Once the block is maxed bore wise all you can do is sleeve them. Which is fine also.
You also need to see what heads, intake, carbs and internals were used to build it. There are lowriser heads and intakes, medium riser heads and intakes, highriser, tunnelport etc...those all determine value. Steel crank vs iron, lemenas rods or aftermarket vs bolt rods, what pistons, compression, will it run on pump gas and so on...
The heads and intakes will have casting numbers. Try to see what those are. We can tell you what your looking at. A 'rebuilt' sideoiler can be a array of parts. Some fine...some not. I'd also ask who did the machine work and who built the engine. And check them out. You can spend thousands of dollars on high buck parts only to spend thousands more to correct things if they were not done right the first time. FWIW...
G.
Last edited by FFR428; Apr 7, 2007 at 04:53 PM.
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If you have a crossbolted 406 from HM... please send me some pics the next time your down there ok? And what casting number did they use? I saw a C2AE-BD LONG ago that was supposedly a factory crossbolted block. I've had a numerous C2AE-J, C3AE-D and a C3AE-V 406's. As the pre cursor and test mule for the 427 I've been very interested in the 406 over the years. Does your block have 427 cyl wall cores? 2 1/2 out of 5 406 blocks did. One had a 406 cyl wall cores on one side and 427's on the other...werid.
My C2 block did not have crossbolt bosses but all the others did. It was however one of the blocks with 427 wallcores. Being it was a 62.5 to 63.5 only option very short lived. And long forgot after the 427 arrived. But it's cool to see 427 features in these blocks. They are a cool part of performance history. G.




