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Original Message
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The parts (re:head cast numbers) |
By Royce Peterson - 01/15/2003 10:46:49 AM; IP 63.87.74.235 |
Ralf, The Low Riser heads have a port that was found to be too tall, Ford engineers found that by raising the floor of the port and making it a little wider it flowed better. The result was called the Medium Riser head.
The C7JE heads have 390 size valves usually. You can install 2.08 / 1.66 valves and they are good heads for anything except racing.
The C7AE rods are good for 500 - 600 horsepower if the bolts are replaced using ARP 2000 series fasteners and prepared properly.
Boat 427's are normally center oiler design, some can use hydraulic cams. In any case you should not wait or someone else will own the block.
Royce |
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