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Original Message
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| RE: 406 to 423 build question |
| By swede - 03/31/2001 8:41:43 AM; IP 129.37.189.119 |
| i did this type of fe combo a few years back, but with a little different head. if you have the stock 406 piston you need to go to a custom job & change compression height on piston, raise it about .025 to .045 depending on cc of head. this will give you less deck clearance to make up for larger cc head that you are using. 406's are about 56cc to 67cc. the head you have has 71cc to 74cc chambers. if you don't do this compression loss will be huge. so buy all means go the custom piston way. hope this helps. |
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