Originally Posted by Marc CJ7
Curious how high everyone takes there engines to? I am 100% stock internally and I usually shift at @3000 rpm. Once and I while I will take it up to 3500 and I might have shifted at 3800 once or twice but the motor is screaming at that speed. Does anyone know what the powerband on these engines looks like? I have never seen a dyno for a 304 before.
A stock AMC 304 or 360 will rev to 5500. The limiting factor in most higher mileage enignes is the condition of the valve springs. With a fresh set of springs, ever a 2 bbl 304 will survive short bursts to 5500. NOT SUSTAINED RUNNING. A mildly modified 304 or 360 with exhaust, intake carb, mild cam will pull to 5800-6000.
The internals will take a good amount of abuse.