Using 400 SBC cylinder heads on a 305 engine
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| − | + | '''Can one put 400 sbc heads #338882 on a 305 engine?''' | |
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The main difference in any 400 cid small block head compared to any other small block head is the "steam holes" between the combustion chambers, due to the 400 block having siamesed cylinders (meaning they are physically connected to each other due to the bore size being as large as it is and the design being a part of the structure necessary for durability of the engine block) and the usual coolant passages not having the normal small block engine designed flow charactaristics. | The main difference in any 400 cid small block head compared to any other small block head is the "steam holes" between the combustion chambers, due to the 400 block having siamesed cylinders (meaning they are physically connected to each other due to the bore size being as large as it is and the design being a part of the structure necessary for durability of the engine block) and the usual coolant passages not having the normal small block engine designed flow charactaristics. | ||
| − | The 400 heads with the steam holes can be physically bolted to other blocks without problem, and non-400 heads can be properly installed on the 400 block by simply laying a correct 400 head gasket with steam holes on the head and drilling the steam holes in the non-400 head, this is best done using a fabricated jig on a drill press to keep the head-to-engine mating surface at a 90 degree angle to the drill bit. | + | The 400 heads with the steam holes can be physically bolted to other blocks without problem, and non-400 heads can be properly installed on the 400 block by simply laying a correct 400 head gasket with steam holes on the head and drilling the steam holes in the non-400 head, this is best done using a fabricated jig on a drill press to keep the head-to-engine mating surface at a 90 degree angle to the drill bit. |
| − | A good editorial with pictures can be found | + | A good editorial with pictures can be found [http://www.gregsengine.com/350to400.htm here]. |
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| + | [[Category:Engine]] | ||
| + | [[Category:Undeveloped articles]] | ||
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