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Original Message
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RE: Chevrolet 409 |
By Mel Clark - 10/16/2001 4:44:07 PM; IP 152.163.195.196 |
Chevrolet had the porcupine heads on what was called the "Mystery" engine in 1963, which was nearly identical to the 396/427 engines that they later introduced. Those engines ran really great but, they blew rods out like Ford was blowing valves. Fortunately Ford had more cars racing than Chevrolet, therefore more victories. The early heads cannot be interchanged from side to side and the mystery engines only had 2 bolt mains. The engine builders were all fitting 4 bolt main caps, ala Pontiac to try and secure the block and crank. Pontiac used a dowel pin to align the caps which seemed to help. The Mystery engines I've seen did not use a dowel pin so the main caps must have moved around a bit. |
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