Just my opinion and assuming the you have the original 228 in your truck ..... If you are looking to rod out an engine, the 228 may be worth restoring to original but a larger cubic inch GMC inline such as a 270 or 302 would make you happier in the long run as a "rodded" engine. As "they" say- there's no substitution for cubic inches. Look on your engine just behind the distributor and tell us the number that you see there. If you have an original GMC engine the first three numbers will designate the size in cubic inches. It may be worth trying to find another engine, putting it in your truck and keeping the old one for parts. As we all know- you can never have too many spare parts around. Your starting out on a good project.

"The Operation of GMC trucks is normally smooth and steady, with no loud rattling, knocking or unusual noises. A good driver will quickly become accustomed to driving a GMC truck and will get the feel of his vehicle regardless of his engineering knowledge."-TM10-1563