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Old April 29th, 2017, 12:59 AM
bigblockv6 bigblockv6 is offline
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Default Re: Transmission bolt patern question

If you're talking about the engine bolt pattern on the 60 degree family of GMC V6 truck engines then all 305,351,379, 401, 432 & 478 as well as the 637 V8 and 702 V12 have the same bolt pattern. There definitely several different bellhousings for different applications but they will all bolt up to any of these engines.
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