Oddly, both aircraft had similar sized and configured engines. Comes of being descended from the original Whittle designed centrifugal flow engines that were sent to the US during the war, and traded to the Russians after the war. Performances were enhanced by swept wings and other aerodynamic refinements.

The main reason for the difference in fuselage geometry is IIRC – on the Sabre the intake duct goes under the cockpit while on the Mig it is bifurcated and rundown the side.

Essentially the Mig17 was the Mig15 developed to what the initial design concept wanted and including the lessons learnt from Korea. These aircraft all date from before area rule was recognised, but at their performance levels it was not a problem.

The Mig17 was a real workhorse, and overall was a match for most western fighters of the period and in its class. It certainly put a dent in the American’s opinion of their technological superiority over North Vietnam.

It’s strange, the Mig17 was the most effective fighter the NVAF had,
even though it was one of the oldest.
It’s great manuverability, and powerful guns made it a tough opponent.

PLANEGUY51