how much hp will i gain if i stroke a stock 302 to a 347?

 

hp hard to say will this be a everyday driver? If so I would do the 331 cause the oil rings in a 331 do not interfere with the wrist pin as does a 347 it will burn oil.

 

i'll be my street car i won't drive it a whole lot maybe twice a week..so how much hp as an estimate?

 

100 to 125 hp A stock 302 in a mustang automatic puts 195hp down 347 with some mods 300hp but your looking at a price of you doing all the work and the parts will cost you $4000 or $4500 for realistic 300 hp to the ground not including clutch or anyother crap you will need to hold it.

 

thanks...also do u know how much the 86 mustang's weigh?

 

if you were to just stroke it and keep everything else the same, 10-12 hp. the 1993 cobra made 230hp, the 93 ford lightning made 240hp. the difference between them is the cobra got a cobra upper intake and the lightning got a better flowing gt40 upper (and a 351w lower). compression was slightly higher on the lightning.

 

WTF!!

 

You would gain a honest 50 hp alone. But your question is more complexed than that. With other supporting mods, the 347 would be that much more. And also the 347s dont burn oil any more like they use to when they were first introduced.

 

when you make 1 hp per ci 347 will make at least 45 more hp with more cubes involved...

 

my 85 is 3165