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Original Message
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| The compression ratio. |
| By Dave Shoe - 09/16/2003 11:42:03 PM; IP 216.243.176.34 |
Actually, the 1971 Galaxie 390 was a pickup truck engine.
Prior to this, the car 390 was generally available in 9.5:1 and 10.5:1 compression ratios. The truck C.R was always roughly 8.5:1 to prevent pinging while towing heavy loads and it actually got Mercury 410 pistons installed to achieve this low compression ratio. You'll find the 390 truck pistons have a C8TE casting number inside them, but 410 text markings on the side.
Otherwise, the engines are similar, but with minor differences.
Note that 360 pickup engines got 390-4V car pistons. Some were cast with "390-4V" on the sides, and others had the "360" text on the sides. Both were the same.
Shoe. |
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