Originally Posted by WildAlaskan
i compared the gt5 cylinder with a gt4cylinder and found several differences first the cylinder apeared to be smaller on gt4 the bottom port openings for the gt4 were smaller and more fit to the crank case also the exaust and intake manifolds were smaller on the gt4 the gt5 indeed had better breathing capibility stock
notice the awesome stock paint the black cylinder is gt5 and silver is gt4
Nice pics. Thanks, I've never seen in there before.