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Original Message
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| RE: #C5AE-F medium riser heads.. |
| By Mel Clark - 12/03/2001 11:37:28 PM; IP 64.12.103.162 |
| If these heads have not been tampered with you have nearly the very best that Ford ever offered. The performance is very near the vaunted High Riser and about 20% less flow capability than the Tunnel Port. DO NOT use the hollow or sodium filled valves as the are a disaster waiting to happen. It's not a matter of IF they will break and ruin your engine but, WHEN they will break and ruin your engine. I suggest using Ferrea or even Manley Stainless steel valves. The rest of the valve train can be stock Ford for use up to 8,000 rpm, just be certain you don't go crazy with lift at the valve and stay close to Ford's specs on spring pressures. |
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