Quote:
Originally Posted by Trevor78
Water pump will depend on the combination of brackets and pulleys. 403 brackets generally won't work, or other SBO as they use both head and intake or head and water pump plate to mount.
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Thank you.I should have said make sure water pump length is same; the longer version for the 455 and 403 if you have A/C since part numbers are interchangeable.
I've spent a lot of time at ClassicOldsmobile forum for great Olds info but they are light on Trans Am knowledge. I know later on there is issues with factory A/C brackets bolting to Edelbrock performer intake but that will come later.