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Old 11-09-2009, 08:31 PM
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Bryan59EC Bryan59EC is offline
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In a lot of cases--they interchange without issues.

early Chevelles----will bolt up (with the exception of the 307 Frame mounts), but the big block will sit higher than it is supposed to on SBC mounts.

I believe the 73-87 Chev/GMC trucks require a different frame mount as well, but the clamshell is the same.

58-64 Chev full size----a BBC will bolt up on the factory v-8 mounts, but not the 6cyl mounts.

Might help if we knew what you were working on.
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