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| Waggin |
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Of course E7's are out of the question. Throw them straight in the bin.
The GT40P/X/Y all have potential, and of course worked GT40 style heads compared to worked aftermarket heads will probably see the aftermarket heads come out ahead.. but the question is value for money.. you could be left with a few $K in your pocket, and only be behind by a few KW. If 190-210RWKW aint enough for you then maybe the next step is a blower. I learnt the hard way with the 4L that N/A is a dead end street for performance. This doesnt apply to the 5L with quite as much strength, but its something to think about.
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| NC 5ltr |
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Waggin wrote: The GT40P/X/Y all have potential, and of course worked GT40 style heads compared to worked aftermarket heads will probably see the aftermarket heads come out ahead.. but the question is value for money.. you could be left with a few $K in your pocket, and only be behind by a few KW. If 190-210RWKW aint enough for you then maybe the next step is a blower. I learnt the hard way with the 4L that N/A is a dead end street for performance. This doesnt apply to the 5L with quite as much strength, but its something to think about. i couldnt be happier with 210rwkw  but how hard would it be to find some of these heads, they didnt come out on any ford model that im aware of.
it just dawned upon me i could always shop overseas with the aussie $ being strong i am sure i will save some money importing the parts myself The TFS intake i was quoted on can be bought for ~ US $395 or ~ AU $498. Given the recent customs duties changes where the limit is now $900 i should be able to get one shipped in for considerably less than $1k.agree? cheers
_________________ "Looking at cleavage is like looking at the sun. You don't stare at it. It's too risky. You get a sense of it and then you look away."
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| Waggin |
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GT40P heads are whats found on all the AU V8's
 Lots around.
Think 250KW Pursuit Ute
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| NC 5ltr |
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Waggin wrote: GT40P heads are whats found on all the AU V8's
Lots around.Think 250KW Pursuit Ute u r pretty intent on me getting gt40s arent u? ill see wat these places have to say about shipping prices to aust first cause u cant beat afr heads for onlyAu$1670 can u?
_________________ "Looking at cleavage is like looking at the sun. You don't stare at it. It's too risky. You get a sense of it and then you look away."
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| EBXR8380 |
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Porting aftermarket heads shouldn't cost too much as its more of a tidy up...
The TE50's run GT40P heads [ported by y/t] and there output at wheels has been as high as 240 rwkw.... AFR 185's 2031 cam, Edel RPM inlet, 65 throttle body, 24 or 30 Lb? injectors and 76mm maf can make over 200 rwkw on 5 ltr....
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| Waggin |
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NC 5ltr wrote: u r pretty intent on me getting gt40s arent u?
ill see wat these places have to say about shipping prices to aust first cause u cant beat afr heads for onlyAu$1670 can u? Just giving you some other ideas. I got a near complete AU XR8 engine for alot less than $1650.. that gives me the GT40P heads, cam, roller rockers and a virgin 302w to begin the 347 install. With the left over money I can put it towards other go-fast parts.
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| EBXR8380 |
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Depends on how much a good porter/ machinist charges ?? Then add to that better valve gear etc etc...But again it depends on how serious you are or what power levels ...Inlet and other gear you have? If you are using any Ford inlets just port the GT p's...
When comparing aftermarket to Std heads the whole head and valve train has to be compared...Roller cams need Top line valve springs, double springs if using performance cam...
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| Airwave |
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Age: 76 Posts: 86 Joined: 30th Nov 2004 Ride: AU II Fairmont Wagon V8 Tickford Location: Melbourne |
I have a set of imaculate GT40P heads for sale with valves, have done 12000 kms
0417 061 881 make an offer Ray
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| Bassfreak55 |
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EBXR8380 wrote: I'm sure guys like Benny Gatt can port some nice torquey heads if you wanted...
Yes nearly ALL heads esprecially street heads require double valve springs... That name sounds familiar.. Do you have contact details for his workshop? Cheers. |
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| EBXR8380 |
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SUPER-FLOW HEADS PTY LTD
264 Hoxton Park Rd Liverpool 2170 (02) 9607 2100 Liverpool Fax 2170 (02) 9607 5464
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| Vic |
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Airwave wrote: I have a set of imaculate GT40P heads for sale with valves, have done 12000 kms
0417 061 881 make an offer Ray If only I actually had any money... 
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