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Originally posted by The Fonz well 5.4 is roughly 326ci im sure there will be big bore kits to hit that magic 5.8 mark sooner or later. Anyway the ci mark does not mean much anymore due to the metric system thus the 351 may mean 351kw and be a be a 351 GT! 351kw would sure give HSV a fright!
From what I understand, the 5.4 V8 is stroked 4.6 V8...so there won't be much left to do with it.
It doesn't mean it can't have an increased stroke from what the 5.4 is, you can make so many variations of an engine, although, given the fact that the 4.6 is square, the 5.4 is already (oversquare?) so boring it would be the best option, and yes there must be room to bore it out more if it has the same bore as a 4.6, and they are going to bore that out to 5 litres. It also makes sense because the new engine appears to be larger than a WIndsor, yet the windsor 302 has 4 inch bore. While the 4.6/5.4 engines have 3.6 inch bore.
6.8 V10 has the same stroke as the 5.4. Which is a very long stroke good for making torque. If you destroked the 6.8L to the same stroke of the 4.6L mustang engine you would get... 5.75L..
There is your 5.8L engine. This engine would be more willing and reliable to rev than the 5.4L. It is also reasonably compact and should fit within BA engine bay.
It would create a unique engine for ford. 5.8L V10 with twin cams and 40 valves! I doubt that is what the GTHO is packing, atleast in this first series... But I doubt the 5.4L Twin cam's ability to provide much more than 330Kw. Suffice for now. But may be short in the future.
return of the 351? who knows the bigger the better!
I thought the new 5.4 SOHC and DOHC V8 especially were 'all new motors' first in the BA then in the new Mustang. The 4.6 Donk V8 has been around since I think '94 and as such this I think the 5.4 completely new?
Hopefully the blocks starting range is 5.4 so big stroke figures in theory are possible. Just read 5l mustangs mag thats good evidence of what some krazy Yanks get up too.
Full details have not been released yet. I think Ford redisgned the whole block, well according to some 'magazines'. Not too long ago a 5.8 SVO modular V8 Mustang was racing on the mountain back in 99-2000? This was probably the 4.6 with allot of work done to it or was it another motor?
They could bore out the Windsor to 5.8 (Old GT's before the cleaveland ran 5.8 litre windsors) so i dont see why they wouldn't be able to do it with this new engine.
All new is a relative term. Nothing is all new. Obviously there are going to be many shared parts between the old 5.4 and the new 5.4. Bore and stroke are the most obvious to be shared between the two engine. Shared bore spacing is what is really at question, it could indeed be changed, as alloy engines generally have cast iron cylinder liners within the alloy block and this userally creates some issues with tightly spaced bores.
The modular engines go from 4.0-5.4L. Most common capacity is 4.6 which is square (bore=stroke). 5.4 is very much oversquare, it will have very high piston velocity in higher revs. Given that the new engine is alloy, I doubt there will be infact much room to bore it out (more so than the non alloy) and increasing stroke isn't really feasable either as you really start to push piston velocity up and the block is only so big. Obviously with a even longer stroke you are going to have issues with getting air into the cylinder as well.
But I could be wrong. Atleast in the details. people have claimed that Ford is testing V10's in BA's/AU's, which I think if they are true means ford might be toying with a 5.8L-6.8 V10.
Wouldn't the v10 be heavier, and induce huge understeer? of course this could be counteracted with the massive power oversteer... ;D
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"When I joined the marines all they gave us was two sticks and a rock! And we had to share the rock between the whole platoon!"
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H2 pwnz j00 foo.
Iv'e always said an "optional" V10 in the HO is the only way to go.....a la triton, with the 5.4 alloy quad cam as the base.
We will need something to counter the rumoured 7 plus litre C5 donk Holden will bring out shortly......
If 5.4 is at max. stroke and bore, where do WE go?
The V8 purists think this is lunacy, but why shouldn't a V10 be an OPTION?
Let the buyers decide what they want - give them the choice....Im sure that if the buyers can afford the new HO, they can can afford the extra cost option of a 5.8 or 6.8 V10.
Im sick of Ford always playing catch up - for gods sake, lets beat the path for once, or our beloved 5.4 will be beaten by a GM C5
7 litre - c'mon guys , we all know Holden will do it - let's be ready for it.
It'd be really good if the gtho absolutley rips up the gtp circuit, ans puts those bloody sv300s and rexes where the belong. at the bottoms }-)>
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"When I joined the marines all they gave us was two sticks and a rock! And we had to share the rock between the whole platoon!"
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H2 pwnz j00 foo.
return of the 351? who knows the bigger the better!
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