Thread: Intake swap

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Originally Posted by Scooting

A 265? I think you may be a bit over on the carb/intake. Is the setup for strip or is this a driver?

Agree with over the top on the intake manifold. That design (same as Performer RPM) was first used on a 302 Chevy that used a mechanical flat tappet cam and could easily rev to 7000 or more. I think it is way too big for a 265 streeter and will result in a soggy bottom end due to insufficient mixture velocity. I wouldn't be concerned as much about the carb. Its vacuum-operated secondaries will only open as far as they need to based on demand from intake manifold vacuum. As long as the primary bores and venturi size are not out of proportion to any other 4-bbl, you should be ok. At street revs, you may not ever get into the secondaries with your limited 265 cubic inches.

I would offer that driveability would be far better with a stock manifold from a 70's or 80's 350.

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