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I liked the DOHC modular engines too, until my 99 Cobra blew up at 15,230 miles. I still like it in a lot of ways...it sounds great at 7,000 rpm and the block and forged crank are great. But, IMO, it's just not the right engine for a GT40. It's much bigger than a Windsor, heavier, wider, even though the bores are 3.55 inches vs 4.0 inches in the Windsor. The DOHC is notorious for oiling problems and bizarre valvetrain harmonics that, coupled with el-cheapo stamped steel cam sprockets, causes lightly modded NA engines to explode. My upper intake cover was so porous you could see pinholes through it. Yeah, the stock heads flow great and that's why the engine responds so well to boost. But there aint enough room for a DOHC PLUS a blower or turbos in a GT40, so you're stuck with an NA application. And the significant gains in NA power will need more displacement, which is limited in potential due to the bore spacing, or high rpms, which taxes the engine and exacerbates the oiling problems. And the cost of getting a 4.6 or a 5.4 to 500 hp NA will significantly exceed the cost of a built 351 Windsor, which will end up smaller and lighter as well as cheaper, even with a race block.
Nice engine for a Lightning or a Mustang, or even the Ford GT when seriously worked over and dry sumped, but just not right for a GT40 IMO. Different strokes for different folks.
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Ahem,,,,,,,,,
actually there are some advantages to the 4.6, such as the engine being quite a few inches shorter in length than a pushrod engine,,,,,and the alum block versions have proven lighter than expected.
Oh, and YES!!!! there is room for the 4.6,,,,
and you WILL be able to add forced induction as we are(& have been) working/developing systems for the Premier GT , from day one.
Once I get caught up with some of my customer work, and get to my own personal Premier GT,,,,,,,,it will have an all aluminum 4.6 DOHC engine with twin turbochargers and twin intercoolers.
Since it will be "my" car, I plan to build it "my' way,,,,and since no matter what I do it will never be an "original 1960s GT40", I've decided to build my very own "land-jet" that has the silouhette of a 60s GT40.
If I were a purist, I would focus on spending a ton of time,energy , and money to build a right hand drive monocoque car with no a/c, all of the period correct parts, such as bias ply 15inch tires, etc ,etc,,,and still have to admit that my car is only a replication of the real thing...
Well, as much as I do respect those who go through the trouble of doing it this way,,,,,,,it is not exactly my cup of tea.
The "purists" may not like it, and that's fine with me.....
I'm not building my car to impress them,,,,, I'm building it to scare the crap out of my wife. /ubbthreads/images/graemlins/grin.gif
/ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif
