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Original Message
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| Heads |
| By Royce Peterson - 07/24/2003 11:06:39 AM; IP 66.161.206.108 |
The Edelbrock 427 heads have a machined combustion chamber which gives a little lower compression than the Edelbrock 428 heads. Check with Edelbrock, I believe the valve spacing is also different than the Edelbrock 390/428 heads and might cause a cylinder wall interference problem on a 390 engine's 4.080" bore since they are intended for a 4.23" or larger bore.
http://www.edelbrock.com
Royce |
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