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Australian Falcons Discuss the australian born and bred models here. Includes the 80's 90's and present day Falcons offered by Ford Oz.

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Old 03-15-2005, 22:53   #1 (permalink)
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Biggest displacement of a 5.4L V8

Hey guys

I was thinking, what is the biggest possible displacement for the Boss? I was getting some ideas :)...
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Old 03-16-2005, 01:43   #2 (permalink)
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Re: Biggest displacement of a 5.4L V8

Its pretty much at the limits of its stroke due to not enough bottom end clearance, you could go a bit bigger in bore size in a stock block but to go up any further you need an aftermarket block like the one from Sean Hyland Motorsports that can stretch it out to 6 litres.
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Old 03-16-2005, 02:25   #3 (permalink)
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Re: Biggest displacement of a 5.4L V8

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Originally Posted by bossxr8
Its pretty much at the limits of its stroke due to not enough bottom end clearance, you could go a bit bigger in bore size in a stock block but to go up any further you need an aftermarket block like the one from Sean Hyland Motorsports that can stretch it out to 6 litres.
Not a bad idea but the block alone is worth $4,ooo us, still requires machine work to take it out further. There is also the Ford GT (4o) block, which is heaps cheaper at $25oo us but is hard as hell to get your hands on . But that requires a dry sump setup and will be just as expensive as the SHM.World products block. There's a few 383 stroker's in the states that use the darton wet sleeve system. Give VT engines a call or look up their site they are the shop i heard that does it.
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Old 03-16-2005, 02:42   #4 (permalink)
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Re: Biggest displacement of a 5.4L V8

It wont matter what you do it will never be as good as the generals 6.0 L engine. Or 5.7 for that matter. Similar bore similar stroke or nearly square if you like.
At least they (the general) put some thought into making the engine and hell wait till THEY bring out their DOHC.
Fords wont know which way they went.

Ford should have made a AlI block windsor avaiable other than motorsport blocks with a DOHC then that would have been something.

Old technology you may ask ?????
What about the 4.0L 6 gezzzzzz that came out in ummm lets see 1970.
Started with a cast head then went through the ali head now the twin cam head and now turbo what a performer.

The 5.4 is a TRUCK engine. F series and experdition. Its not avaiable in a passenger car in the US. ITS A TRUCK ENGINE.
Trucks need torque hence the SLOW reving BIG stroke and little bore.
6000 rpm isnt that fast when you come to think of it but for the 5.4 its pretty dam quick.
Piston speed is tooooo fast and the longer the stroke the longer the piston is stopped at the bottom and the top.
Puts more SIDE pressure on both piston skirt and bore.
Why do you get more power and better performance from the 4.6l mustang motor !!!! Its a better matched engine revs better, better balanced.
Want power you need BIG bore similar stroke.
The 5.4 will never be a true performance engine. Unlike the 4.6 or the windsor/clevo.
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Old 03-16-2005, 03:11   #5 (permalink)
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Re: Biggest displacement of a 5.4L V8

Quote:
Originally Posted by red250
It wont matter what you do it will never be as good as the generals 6.0 L engine. Or 5.7 for that matter. Similar bore similar stroke or nearly square if you like.
At least they (the general) put some thought into making the engine and hell wait till THEY bring out their DOHC.
Fords wont know which way they went.

Ford should have made a AlI block windsor avaiable other than motorsport blocks with a DOHC then that would have been something.

Old technology you may ask ?????
What about the 4.0L 6 gezzzzzz that came out in ummm lets see 1970.
Started with a cast head then went through the ali head now the twin cam head and now turbo what a performer.

The 5.4 is a TRUCK engine. F series and experdition. Its not avaiable in a passenger car in the US. ITS A TRUCK ENGINE.
Trucks need torque hence the SLOW reving BIG stroke and little bore.
6000 rpm isnt that fast when you come to think of it but for the 5.4 its pretty dam quick.
Piston speed is tooooo fast and the longer the stroke the longer the piston is stopped at the bottom and the top.
Puts more SIDE pressure on both piston skirt and bore.
Why do you get more power and better performance from the 4.6l mustang motor !!!! Its a better matched engine revs better, better balanced.
Want power you need BIG bore similar stroke.
The 5.4 will never be a true performance engine. Unlike the 4.6 or the windsor/clevo.
Show me a 4.6L n/a that can compare to a similar spec Boss engine. Their are a handfull of them out their but huge amounts of money have been spent on them to get them where they are. 90% of the high hp 4.6L engines have been stroked to 324 ci or run the 5.4L block.

The general didn't put any thought into the 6.oL, they import them from the states and drop them in. Holden had nothing to do with the design or development of the engine. It'll be a long time before they go DOHC and i wonder how well it will perform.

Those 6.oL do sound nasty, they must run a big cam in them.
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Old 03-16-2005, 05:07   #6 (permalink)
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Re: Biggest displacement of a 5.4L V8

The general didn't put any thought into the 6.oL, they import them from the states and drop them in. Holden had nothing to do with the design or development of the engine. It'll be a long time before they go DOHC and i wonder how well it will perform.

Hmm so holden isnt owned by the General gezzzz wonder who owns it then.
I cant imagine holden using a chinese engine when the parent company actually makes emmmmmm.

Hmmmm so ford didnt import the 5.4 L motor from the US ?????? either
hell not sure where it came from then !!!!!!!

And ya dont think the generals going to sit around and not make a DOHC 6.0L
Mate what type of drugs are you on???
gezzzz they just developed the DOHC for the v6 reduced the capacity of the engine and now pumping out more than the 4.0L Ford.

They are going to put a turbo on just like ford.

Wonder how a DOHC 6.0L Gen iv will go 4" bore 4" stroke like i said want power need big bore small stroke wont be any trouble for 450kw's the gen 3's are doing 400 now with similar mods as the boss engines which seem to be struggling to do better than 350.

Want performance then get a performance engine to start with not a bloody truck engine.!!!!!!

Give the windsor engine same heads and compression ratio as the boss engine and the boss engine would look pretty dam sick!!!!!!!!!!
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Old 03-16-2005, 16:30   #7 (permalink)
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Re: Biggest displacement of a 5.4L V8

Quote:
Originally Posted by red250
The 5.4 is a TRUCK engine. F series and experdition. Its not avaiable in a passenger car in the US. ITS A TRUCK ENGINE.

The 5.4 will never be a true performance engine. Unlike the 4.6 or the windsor/clevo.
Corvette Z06 specs (As quoted from the GM US www site)::
LS7 7.0-liter/427-cubic-inch Gen IV V-8 with lightweight reciprocating components
500 horsepower (373 kw) at 6200 rpm
475 lb.-ft. of torque (657 Nm) at 4800 rpm
7000 rpm redline


FordGT Specs (As quoted from the Ford US www site):

Wanna race? The 5.4L DOHC mod V8 engine packs an astounding 550 horsepower and 500 lb.-ft. of torque. That’s power comparable to the race-prepared, blue-printed 427 (7.0L) big-blocks in the Ford GT race cars.

You choose which is the most refined engine ....
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Old 03-16-2005, 17:06   #8 (permalink)
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Thumbs up Re: Biggest displacement of a 5.4L V8

Good reply tonester, kapow! zock! etc
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Old 03-16-2005, 18:04   #9 (permalink)
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Re: Biggest displacement of a 5.4L V8

Quote:
Corvette Z06 specs (As quoted from the GM US www site)::
LS7 7.0-liter/427-cubic-inch Gen IV V-8 with lightweight reciprocating components
500 horsepower (373 kw) at 6200 rpm
475 lb.-ft. of torque (657 Nm) at 4800 rpm
7000 rpm redline


FordGT Specs (As quoted from the Ford US www site):

Wanna race? The 5.4L DOHC mod V8 engine packs an astounding 550 horsepower and 500 lb.-ft. of torque. That’s power comparable to the race-prepared, blue-printed 427 (7.0L) big-blocks in the Ford GT race cars.

You choose which is the most refined engine ....
Come on now.

The GT block is 1. BLOWN 2. All alloy with 1 million trick bits 3. $40000 US just for the motor.

The whole Z06 only costs $65000 est.

I have to agree with Mr Red250 race car engines are OVER SQUARE

Just look --> The two hardest NA motors I can think of

M5 V10 500hp 100hp/L 92.5 bore 75.2 stroke
F430 V8 485hp 114hp/L 92 bore 81 stroke

One last thing any one know the weight of a LS1 vs LS2 vs Boss ??

Thanks
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Old 03-16-2005, 18:14   #10 (permalink)
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Re: Biggest displacement of a 5.4L V8

Quote:
Originally Posted by red250
The general didn't put any thought into the 6.oL, they import them from the states and drop them in. Holden had nothing to do with the design or development of the engine. It'll be a long time before they go DOHC and i wonder how well it will perform.

Hmm so holden isnt owned by the General gezzzz wonder who owns it then.
I cant imagine holden using a chinese engine when the parent company actually makes emmmmmm.

Hmmmm so ford didnt import the 5.4 L motor from the US ?????? either
hell not sure where it came from then !!!!!!!

And ya dont think the generals going to sit around and not make a DOHC 6.0L
Mate what type of drugs are you on???
gezzzz they just developed the DOHC for the v6 reduced the capacity of the engine and now pumping out more than the 4.0L Ford.

They are going to put a turbo on just like ford.

Wonder how a DOHC 6.0L Gen iv will go 4" bore 4" stroke like i said want power need big bore small stroke wont be any trouble for 450kw's the gen 3's are doing 400 now with similar mods as the boss engines which seem to be struggling to do better than 350.

Want performance then get a performance engine to start with not a bloody truck engine.!!!!!!

Give the windsor engine same heads and compression ratio as the boss engine and the boss engine would look pretty dam sick!!!!!!!!!!
Yes the Boss engines uses the F15o L block, o3 cobra head castings. A custom inlet manifold designed by ford aus. Hardly comparable to a crate engine that they just buy and drop in is it.
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