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Original Message
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| RE: 390 differences |
| By DMA - 12/28/2000 11:04:57 AM; IP 64.10.152.100 |
| Ed is correct as long as you compare "light" trucks w/ cars. When you get into "heavy" trucks Ford identified these engines as 391 although dimensionally are the same. Differences are "heavy" engines (391) came w/ forged steel crank, sodium cooled valves and other diffs suited to heavy duty low rpm lugging. I understand a 391 forged crank can be installed in a car 390 after some machine work to fit car balancer. Best to you! Doug |
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