Got a 69 fastback with a 351 windsor, and FMX trasmission. 3.00 to 1 rear, The engine needs rebuilding, and I am thinking of doing a 427 stroker? I am looking for at least 400 - 450hp, not sure if I will be using the stock heads or not. My question is will me stock FMX transmission be able to handel up to 450hp at the flywheel?

 

i would think it matters how you drive it?
if thats an original 69 351W, you have good heads, port them suckers out and stroke that puppy - you'll be lovin life

 

Well if I use the stock heads and port them, I will probably get 400 - 410hp, reliable hp, and I plan to have my foot in it! I just don't want to get into upgrading to a C6 if I don't have to.

I am just trying to figure out how much HPa stock FMX transmission is good for?

 

Hey Uwti....You haven't been around for awhile. Where's that 67 GT500 of yours? I don't have an FMX tranny, but guys on here swear they can't break them.

 

Yeah theyleak more than they break. Cast iron and aluminum expand at different rates, so leaks happen. But they are relativley tough.. A built C4 will handle 450 no problem, a well built stock FMX should too.

 

if you have to change trannys id go for a aod so theres an overdrive

 

Correct me if i'm wrong, but I was led to believe The FMX was actually stronger than the C6, but the C6 was strong enough, lighter, and cheaper to manufacture.

 

Hey Soaring, Thanks Istill have her! now working on my 69 Mach 1, trying to plan my build out, I think most of my questions have been answered.

My Shelby has been up on Yahoo Customs with some new pics! Check em out
http://custom.autos.yahoo.com/galler...sO8Lf207FSh84F

Here is my Mach 1
http://custom.autos.yahoo.com/galler...N6S0Upe8TMdscF

 

i have so much ***** envy of you right now[8D]

 

just wanted to say nice ride. I love the shelby.