Cammer engine?

[Gary Gibbs]

Here is the size difference:

Bore spacing sucks. Bore to stroke sucks. OHC is great if the bottom end is set up for the RPM's. Not here.

[Alain Vanhollebeke]

[ QUOTE ]

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.

[/ QUOTE ]



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. [img]/ubbthreads/images/graemlins/grin.gif[/img]
[img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]

[Jim Downard]

Well said Alain, well said.
"We have nothing to fear, but fear itself, and a twin turbo'd GT 40"
Jim Downard

[jimbo]

I have about 8-9K in my 302 motor, which started out as a bare block and caps for $250. Everything else was expensive. GT40s are so light that I would pick the motor as follows:
-decide what country you live in and what air quality laws you'll have to deal with
-decide what the car weighs
-decide how fast you want to go
-decide how much hp you need (see just above)
-decide how cheap you can get that hp and still meet the first two
For those of us in the US, that generally spells a pushrod motor. The cost difference for a pushrod motor versus the modern modular engine is enough that if I lived "down under" and thought I could avoid the emissions regs by getting a vintage block, I would probably buy one here and build it down there. But, I don't know how their laws pertain to vintage engines with modern internals...

[soonhopefully]

A nice link for the 4.6lt aftermarket superchargers.
http://www.whipplesuperchargers.com/...sp?ProdID=1204

[Craig White]

[ QUOTE ]
So MOD 4.6 it is.. Robert at Roaring Forties has seen the way of the future here in Oz (as have DRB i believe) and run with it. Sure if we weren't hamstrung by the lawmakers, there'd by a nice SB in my car.
Different RULES for different Folks i guess... [img]/ubbthreads/images/graemlins/smirk.gif[/img]

[/ QUOTE ]

Tim, I've seen a completed DRB GT40 with mod 4.6lt. Not my preference, but not the end of the world. Fit surprisingly well. Not quite the look I like through the rear window though. [img]/ubbthreads/images/graemlins/smile.gif[/img] DRB's Cobra chassis also accepts mod 4.6lt as well.

A friend of mine with an exotic factory sports car that lives in NSW, actually has the car reg'd by a family member in VIC. He couldn't get it reg'd in NSW.

So if you have family or trusted friends in other states, you can always get it registered through them and your small block. Now the really interesting part. Built a carby Cobra replica that was approved and reg'd in QLD. When it was built, the current rules for NSW stipulated EFI only, so could not be reg'd there. Now the really cool part was that once it was reg'd in QLD, it was easy to re-engineer it for NSW. If you pick the right engineer in the right location, you don't even need pit inspection. Cool hey.

So there are options, not great options, but at least there are options. [img]/ubbthreads/images/graemlins/smile.gif[/img]

[Hershal Byrd]

I might have missed it because I didn't read the whole thread but I know for sure that the 5.4 L engine does not fit the GT. It is way to long and sends the transaxle tail out the back by about 4". The 4.6 fits nicely. and the guys in Australia will have a nice engine for their cars. I saw it in the GT and it looks like it should have been there from the start. [img]/ubbthreads/images/graemlins/grin.gif[/img]

Hersh [img]/ubbthreads/images/graemlins/smile.gif[/img]

[Joe Angers]

Here's a comparison between the dimensions of the 302, the 351W, and the 4.6 SOHC and DOHC. And for giggles the 460.I got this from the Ford Racing Performance Parts website.

302W W=18 3/4" H=20 1/4" L=27 1/2"

351W W=21" H=23 1/4" L=27 1/2"

4.6 16V W=25 5/8" H=26" L=28"

4.6 32V W=30" H=29 7/8" L=28"

460 W=26" H=26" L=32"

I can understand the hesitation with some with the engine's size, it is a big lump. It's clear that the engine limits it's use to tube frame cars. But with some time and patience, it's possible to fit the engine into a GT40. My basic feeling is that as the engine has tremendous potential. Remember that it took almost 2 decades before the aftermarket took off for the 302. I think with Ford's technology transfer initiative, that the curve for the 4.6 will be a lot quicker.

[Craig White]

Toyota 1UZ-FE is approx. 700mm cube, smaller than mod 4.6lt. 1UZ-FE is commonly referred to as Lexus 4lt, but ours came out of a Toyota Crown half cut. Used one in last Cobra replica that my brother still very successfully campaigns at sprint meets. Stock engine with just aftermarket ECU and decent exhaust and does 12.4secs on 1/4 mile. And has picked up quite a few trophies from various sprint meets etc. Were planning to eventually twin turbo it, that's why aftermarket ECU, plus you get traction control etc. These engines are just so cheap and strong, you could replace the engine here in Aus for AU$1000. I think we have come into age of throw away engines. [img]/ubbthreads/images/graemlins/smile.gif[/img]

Not very original, but would suit a GT40 just as well if you are looking for a cheap race engine. If you want more squirt just add some 2nd hand turbo's and intercoolers. [img]/ubbthreads/images/graemlins/grin.gif[/img]

Just another option. [img]/ubbthreads/images/graemlins/smile.gif[/img]

[TimB]

[ QUOTE ]
A nice link for the 4.6lt aftermarket superchargers.
http://www.whipplesuperchargers.com/...sp?ProdID=1204

[/ QUOTE ]

If you want to use a SOHC modular this one by Ford's SVO division is a nice option....it really woke up my daily driver. It's the same Eaton M112 used on the lightning but without an intercooler.

[TimOz40]

Another use for the 4.6 32V
http://www.koenigsegg.com/

806HP supercharged 4.7L
[img]/ubbthreads/images/graemlins/shocked.gif[/img]

[Joe Angers]

[ QUOTE ]
Another use for the 4.6 32V
http://www.koenigsegg.com/

806HP supercharged 4.7L
[img]/ubbthreads/images/graemlins/shocked.gif[/img]

[/ QUOTE ]

The engine is the Ford modular design (the valve covers is a dead giveaway), but Koenigsegg sources it's blocks directly from Teksid, not Ford. Teksid provides all of Ford's aluminum modular blocks, chances are, if you own a pre-2003 Cobra, it's got a Teksid block. Teksid also provides Ferrari with blocks for their F-1 engines.

Sean Hyland's book on building modulars shows how to tell the difference between a Teksid, a Windsor, and Romeo modular blocks.

[ingvar]

There is a complete car in sweden with the 32 valve ford engine. I saw the car in the wheels magazine. The car was in a alfa shop in upsala.The car was complete.
Web adress to the owner is : www.autokinito.se
Then look at : "verksta'n" Regards ingvar