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5.8 EFI 

 

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 Post subject: 5.8 EFI
Posted: Fri Apr 04, 2008 12:41 am 
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What sort of hp will a 91 351 windsor block handle 5.8 EFI

 

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Posted: Fri Apr 04, 2008 7:13 am 
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the guys on corral reckon 600-650 comfortably
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Posted: Fri Apr 04, 2008 9:16 am 
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awesome picked one up yesterday for cheaps suit rebuild, time to start planning

does anyone know where i can get a GT40 5.8 lower manifold from??

 

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Posted: Fri Apr 04, 2008 9:43 am 
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A bloke was selling one on here a while back, don't think it sold?
Check the For Sale section.

 

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Posted: Fri Apr 04, 2008 4:48 pm 
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Mackagtho wrote:
awesome picked one up yesterday for cheaps suit rebuild, time to start planning

does anyone know where i can get a GT40 5.8 lower manifold from??


You've got buckleys of finding a gt40 lower. Easier to get Edelbrock performer like in my 351w into XE post above.
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Posted: Fri Apr 04, 2008 10:52 pm 
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ohh dont tell me that, need a GT40 lower for the other part thats going to sit on top (hopefully) :wink:

 

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Posted: Fri Apr 04, 2008 11:59 pm 
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Steady ED wrote:
A bloke was selling one on here a while back, don't think it sold?
Check the For Sale section.


Unfortunately it sold a couple of weeks ago. Whats the chances.

 

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Posted: Sat Apr 05, 2008 12:16 am 
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Big influx of high powered windsors in Perth now, must be a good thing. :shock:

 

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Because of Beer, Thirst is a Beautiful Thing!

'95 EF XR8 auto, Advance headers, 3" exhaust, Cobra manifold, BBK 75mm throttle body , 80MM Marauder MAF, Vortech V2 T Trim , 307 rwhp, 405 ft/lb 13.2 @ 105 MPH

Now N/A (permanent Lag) - AFR 165's, Comp XE270 cam, 1.6 RR - 269 rwhp 14.1 @ 102mph.

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Posted: Sat Apr 05, 2008 12:21 pm 
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Mackagtho wrote:
ohh dont tell me that, need a GT40 lower for the other part thats going to sit on top (hopefully) :wink:


Well the U.S. is probably your next option. But I've had contact from at least 3 yanks in the last few months looking for the same thing....good luck. Found one about a year ago but some a**hole had ceramic coated(read f**k it!) it.
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Posted: Sat Apr 05, 2008 4:15 pm 
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They were standard fitment on F150 Lightings yeah?????

 

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Posted: Sun Apr 06, 2008 4:02 pm 
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Mackagtho wrote:
They were standard fitment on F150 Lightings yeah?????


Yep Lightnings '93-'95 and also '95 Mustang Cobra R which had the curved inlet '94-'95 Cobra intake which, if you could get it is the lowest profile 351 upper there is. Put one in a Cobra kit car once and it fitted under the bonnet!?
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Posted: Sun Apr 06, 2008 8:08 pm 
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Been doing a bit of research and was wondering following things for my build

Would AFR 185's be a good choice even if i was planning to supercharge 351 Windsor?

If Heads good choice which ones 58cc 60cc or 72cc?

what would be good comp ratio was thinking around 8.5 - 9

After around 600-700hp streetable horsepower 6500rpm max

Ideas greatly appreciated

 

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Posted: Sun Apr 06, 2008 10:34 pm 
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205 or even biggeer... 8.5 compression I would aim for... On a 351 block... With good tune...
With 185 and up the pistons require larger notch's in due to bigger valves.. Being that its a high output motor I figure forged pistons and roatating assembly...
With blower any decent heads will make power...

 

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Posted: Sun Apr 06, 2008 11:18 pm 
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AFR 185's are a good choice but AFR205's, TFS-R intake, 9:1 comp, Crane HR-224/339-2S-12, Novi2000 or Vortech T-trim @ 10lbs
Dyno 2000 says 695hp @ 6000rpm 714lb/ft @ 4000. Simulator tends to overestimate torque so figure on 660-680lb/ft. Torque at 2000rpm would be around 520-550lb/ft.
AFR 185's knock about 70hp off the top end but that's all.
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Posted: Sun Apr 06, 2008 11:36 pm 
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Power: 229 rwkw

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Holy s**t they are good figures. :shock:


695 horsepower through a falcon tranny and diff too? Looks like a C4 and 9" too. :)

 

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Because of Beer, Thirst is a Beautiful Thing!

'95 EF XR8 auto, Advance headers, 3" exhaust, Cobra manifold, BBK 75mm throttle body , 80MM Marauder MAF, Vortech V2 T Trim , 307 rwhp, 405 ft/lb 13.2 @ 105 MPH

Now N/A (permanent Lag) - AFR 165's, Comp XE270 cam, 1.6 RR - 269 rwhp 14.1 @ 102mph.

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