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Re: 307 engine
You can put a set of cheap as cheap 305 heads like I did. +.60 = 317. Really the latest Vortech will bump power even more. Like 30-40 horse. And a bit of torque. But that stock 307 cam is the power killer of all. Old timers told me of guys buying them from running cars for $100 all day (owners were going 350, like always eh?) drop in a dirt cheap factory 327 cam (1973 prices) timing chain. Add headers & a dual plane. Done.
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