inI am doing an engine swap for my 69 chevelle. I am installing a 72 454 block to a 4l80 trans. I want to purchase the correct mounts for my setup....thanks.
Featured Part for the Chevrolet Chevelle 1971
Motor and Transmission Mounts
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Answer: For the Big Block engine mount you would need 3.1117. This mount fits the 68-72 Chevelles. Since you are installing the 4L80 transmission I can not help you/ There are 2 transmission mounts for Chevelles that may work with the 4L80 transmission. They are 3.1108 and 3.1158. The 3.1158 is the same dimensions as the 3.1108 except the 3.1158 is 5/16 shorter. Helpful! (0) - Unhelpful (0)
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