The 325 and 350 HP engines have oval port heads with smaller intake ports and valves, less compression, and cam (hydraulic instead of solid, too).
The 375 is getting hit for two reasons. It has a lot of potential, and that potential is being exploited, by a lot of people.
It has the same heads, cam, intake, and carburetor as a 427-425, with 30 less cubic inches to feed. So it rev's higher and makes more HP per cubic inch, common when you have engines restricted by various rules.
The 396-375 is also very common, a lot of people run them, in everything, Chevelles, Novas, and Camaros, to name a few. They fit well in A, B, and C, in both the Camaro and the Nova.
Alan Roehrich
Bring "AA" classes to NHRA Stock Eliminator!
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Alan Roehrich
212A G/S
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