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Original Message
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| 390 car pistons same as some 360 truck pistons. |
| By Dave Shoe - 03/24/2002 9:54:11 AM; IP 63.233.227.179 |
The 369 engine is a low compression engine. There are some 390 car pistons which were used in the 360 to achieve this low compression.
The compression was redesigned lower through the nine year life of the 360, so not every year would work with a specific 390 car piston, but there were years where the 390-4V piston was used (maybe 390-2V car in some years, I forget), and if Ford wore the die-cast tool out they'd make another tool with 360 markings on it.
Since 390 car and 360 truck tools were casting pistons side-by-side at times, you'll find the end result is a mix of 360 and 390 pistons in the same engine. The same holds true for the 390 truck engine and the 410 car piston, and true with connecting rods, too. Mixed casting and forging numbers inside the engine, but all based on identical tools.
JMO,
Shoe. |
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