[HWYSTR455]

I had a '67 Dodge Cornet convertible with a 318 2bbl. I rebuilt it, .030, and a dual plane intake with a Holley 725cfm vacuum 2ndary. (Think it was a 725cfm?). That car with a 3.23 rear and 927 auto got @ 32mpg at 60 on the highway, used to have to prove it to people because they didn't believe me.

When I got my '71 LeMans Sport, it was a 350/2bbl 350 auto AC car with 3.08s. It was all original with @ 68k miles on it. It was certainly 'peppy' and surprised me as well. Not sure what mileage was but it was certainly less than my 455 bird and convertible.

With no other changes, I put an Edelbrock Performer on it with a small sized Holley vac 2nd, and it lost a lot of that peppy-ness. Granted, it wasn't properly tuned right off the bat but it was still very noticeable.

I was building a 400 for it, so I didn't really bother too much getting optimized.



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