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Re: 360 heads on 318 block??
Non Magnum 360 heads (340 heads also) will bolt directly onto any LA series ('67-'91) 318. It changes the tuning of the engine significantly. The intake and exhaust port size is much bigger in the 340/360 heads so the RPM for peak torque and hp moves up the RPM spectrum about 30%. Because of the change in tuning, it is easy to "over cam" the engine and end up with lousy performance. If you know what you are doing, you can make a serious performing engine out of an old 318.
The Magnum series usues the exact same head for both engines. That is why if you drive a 360 and then a 318, you will notice the the 318 has a lot less low rpm torque but comes on strong in the higher RPMs.
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