FoMoCo

just opened up a 351w from 1972 and the pistons don't say anything on 'em. The only number is "351" on the piston and the other casting numbers on the rods.

Does this mean that they are original standard pistons from 72? I just want to know if the engine was rebuilt at one point.

90mustang5.8

i'm not to sure but i would like to point out that i have a 1972 351w also ...lol what are the chances of that happening lol

7upedition

I would assume so that seems like a casting imprint from an original mold.... hard to tell the classi mustang guys maybe able to tell you since the motor is from there era vehicles...

FoMoCo

just wondering, pretty soon it will be in my fox. Do i really need a 4" cowl????

notch5oh

i dont think you need a 4". a while back i read something about a guy who had a custom k member made to drop his 351 an inch and a half so it would go under the stock hood. i assume a 2" cowl hood would clear the engine with a stock kmember.

FoMoCo

when i mount the 351, is it worth having a 4" cowl? do you guys think the 4" cowl is a dead giveaway of what is under the hood? cause you know some people have that hood for show with their stock HO intake. Maybe the 2.5" will give it a more sleeper look.

But i guess when they listen to the engine, they'll probably know i mean business... any advice?

88blackgt

not a big fan of huge cowls, i would say keep it as small as possible. more subtle also, may not give it away as much as a 4

FoMoCo

i'll probably go with the 2", i hope it clears the air cleaner tho.

frdmstng1986GT

r.barn just put a 351 in his fox, he said he tried a 2 1/2 inch couwl and it didnt fit. the hood would hit the upper intake.. he said he had to put a 4 inch on to clear the intake.

90mustang5.8

try and fit it under a 2.5 cuz their are some nice 2.5" hoods and u can atleast see out the window

-cobra R 2.%"
-cobra R w/ SVO scoop 2.5"
-stormin norman 2.5"