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Original Message
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Phantom heads, revisited. |
By Dave Shoe - 11/23/2002 11:28:54 AM; IP 216.243.176.34 |
Can you tell I'm a little jittery about posting my FE oiling system claims? The present 390 build I'm undertaking will execute this claim to the fullest extent, measuring oil pressure at both the filter and the rear of the block, with only a fancy pan, a recalibrated stock pump, reinforced pump driveshaft, and oil restrictors upstairs. Until then, I probably shouldn't be so bold about it.
As I understand it, the NASCAR 406 and 427 CO engines had no chronic problems with oiling, whether due to lack of pressure at the mains or with the crank journal diameters causing oil overheating. These stories presently appear to be fabricated. The FE often enough whooped the Chrysler Hemi, with Petty's Monster Hemi expiring after 60+ laps of neck-to-neck racing with a 396FE, the FE moving on to victory. You KNOW that FE was spinning some RPM! Well OK, it was a sideoiler, but it likely had the standard crankshaft journal diameters, suggesting there is little merit to crank journal overheating complaints.
It's become clear to me the only reason the sideoiler was created was because the FE uses the camshaft to route oil the crank, and the Cammer would lack a cam in the block. Since the Cammer's oiling system was to need some kind of mods to route oil to the crank, it looked wise to adapt the block to the more conventional "priority mains" oiling used in the Y-Block. The Y-Block was a sideoiler, but the FE was designed as a center oiler, partlyly because it was a hydraulic lifter block and it needed oil upstairs, and partly to reduce the opportunity for oil drips out on the garage floor - a service expense and customer relations issue. With most of the oiling plugs moved to the inside of the FE, it would drip less. The Cammer customer was not the type to be concerned with oil drips.
This is all just my theory, pure fabrication, so I probably need to be more careful about qualifying my oiling claims until I get a functional test bed (a 390) going, and actually make measurements.
Shoe. |
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