Is there a technical explanation as to why a 302 that has been stroked to 347 produces more ponies than a stock 351? Shouldn't the larger displacement engine still have more HP? Or are the workings of everything else (carb, intake, cam, heads, headers, etc.) that makes the difference?

 

so many things determine that

 

have you ever seen a 347 with everything else being stock...nope.......

 

Yeah, now lets compare a 347 to 427 based 351...