How to choose a SBC engine

From Crankshaft Coalition Wiki

(Redirected from Choices: 327 with factory oversized valves or 350?)

Engine choices can be hard when there are so many to choose from. The choice of a SBC can be an easy one if you want a cheap reliable engine that can produce a good amount of horsepower. As a SBC can come in a size as small as 262 CI all the way to well over 400 CI in custom built engines, they all have their purpose. You wouldn't put a 262 in a truck, but you may put it in a Monza if you want MPG.

262 CI: Used from 1978-1981, low hp, smog engine designed for reliability with high MPG.
265 CI: Chevrolet's first SBC. Far surpassed in performance by the 283 and 327 engines that came shortly after. Consider this one for restorations only (unless you like a challenge).
267 CI: Used from 1978-1981, low hp, smog engine designed for reliability with high MPG.
283 CI: Chevy's first engine to produce 1hp per CI. Provides hp in the higher RPM, good for light cars and higher RPM.
301 CI: This is a .125 overbore 283, it needs a block with thick cylinder walls (recommend sonic testing first) and is no longer recommended (or necessary) practice, use a 350 block and a 283 crank with spacer bearings if you want to build one.
302 CI: The Z/28 engine used for a short while. Great for high RPM hp and T/A racing. If you can find one (original 302 cranks are very expensive).
305 CI: Decent engine, many consider it too small for hi-performance, but decent enough for street performance in a lightweight car.
327 CI: Considered a good engine for higher RPM hp, can be built for street performance if you get tired of hearing: "350, 350, 350, 350".
350 CI: America's most popular SBC. Not much needs to be said, they fit most budgets and expectations, great all around engine.
383 CI: 350 block with a 3.75 crank. Considered when low end hp or torque are necessary. Initially required external balancing but internal balance cranks are common today.
400 CI: Stock cranks are external balanced, crank manufacturers are currently producing internal balanced cranks.