ok so what if they are super expensive (i didnt even see a price) but omg how badass is that?

https://mustangforums.com/m_2932063/tm.htm

 

What about all the additional money you'll spend building the bottom-end to take advantage of those heads. With that kind of money you could buy a Gurney-Weslake 305 with Webbers and make 550 @ 8500 and have the reliability to go 24 hours at LeMans.

 

That's what I have on my 4.6 03 Mach 1. Not sure how you could even make them fit. But, if you could, you would havesome heads to build the rest of the engine around.

 

Glen, Can i have your mach one when i graduate? I think it's only fair, you bought your nephew one, jeez. I should be your mustang forums son, We've been on here so long together.

P.S. i would love to have 4v heads. OHOHOH

 

my bro has the 4 valve 4.6 in his mark VIII. i think his is 290 hp stock, that luxery car gets it pretty good.

actually i think those 4v heads would be more friendly making high horsepower than a turbo or supercharger though.... with a steel crank, decent rods, and forged pistons you'd have a motor capable of alot of durable HP.

plus its just BAD *** and completely different. i mean, a 408 or 427 stroker with 32 valves is sweet.

 

soaring the heads are different your car is over head cam the link he posted is a push rod 32 valve head. i like them price is too high for me i can get a set of boss 429 heads new for that and put them on a 460

 

one word......damn

ne one wanna make, fab, etc a set for a 289[&:][8D]