![]() You could use a Edelbrock head on a 318 really well. This is where people give the bad rap to the 340/360 head on a 318. Your lack of low rpm is a result of the size of the cam and not the head to a huge degree. If you gave it a medium size cam more suited for the head, it would be operating as intended. The ports are large and the velocity will be low. Putting a 360 head on a small cam is not the best way to go. A stock head will lower it 500, a good head will perform as advertised and a really good head will add 500 rpm. Let’s say for example you choose a cam in the 2-6K rpm range. So! Once you cam up your engine, it has a new rpm range which can go up or down from the catalog listings. ![]() Generally speaking, it’s good basis to go by but it is highly flexible depending on the part used in the engine. The grinder will list there ranges in the catalog. For the sake of simplicity and this is really over doing it but it applies loosely.Ĭams have a operational rpm range to them. When it comes to building an engine with performance in mind, once you re cam the engine the power starts and ends in a difference rpm range. Here’s the deal with any engine, 318, 360 etc. Your better off selecting a good 318 head to port for a higher velocity which will equate to a snappier throttle response and a higher quality air and fuel charge. Since a 340/360 head has the larger ports, it acts like a ported 318 head but with a lower velocity.
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