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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > 350 vs 400 rebuild
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Old 07-29-2023, 03:09 PM
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Skidmark Skidmark is offline
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Join Date: Apr 2021
Location: Wake Forest area, NC
Posts: 267
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Originally Posted by mgarblik View Post
A 400 will get the same gas mileage as a 350 +- 1 MPG. The extra bore size and 50 cubic inches make more "smiles per gallon".
Thanks, yeah I definitely want to build a 400.

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