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03-29-2010, 10:45 PM
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#1 |
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Sleepy
Join Date: Mar 2010
Posts: 16
Rep Power: 11  |
How much is too much boost for a 4.6?
How much boost is too much for a 4.6 with stock internals? I'd like to eek out a few more horses and I've found a place that sells a pulley that would increase me from 11 to 12 lbs. but I'm concerned it would be too much. Anyone have any good info on this?
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03-29-2010, 11:24 PM
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#2 |
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Administrator
Join Date: May 2007
Location: outskirts salinas... or Prunedale :(
Posts: 1,749
Rep Power: 10  |
if your talking about your GT500 u have a 5.4L and it will take very easily an increase in boost.
and if ur not talking about a gt500 then a GT 4.6L wont take much more than mid 400s MAYBE a 03/04 cobra 4.6L will take 700+ with the right power adder and tune
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FEARLE5S 04 COBRA: GONE 2011 AWD 6.2L |
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03-30-2010, 12:40 AM
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#3 |
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Sleepy
Join Date: Mar 2010
Posts: 16
Rep Power: 11 |
I'm making 484 right now at the wheels with 11 lbs. So I suppose I should just be happy with what I have right now. Its a 4.6 GT, 2007.
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03-30-2010, 08:29 AM
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#4 |
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Administrator
Join Date: May 2007
Location: outskirts salinas... or Prunedale :(
Posts: 1,749
Rep Power: 10 |
so ur talking about a 3valve? hmmm lets let elky chime in he will know a lil better... but as far as im aware ur reaching its limit. stock shortblock?
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FEARLE5S 04 COBRA: GONE 2011 AWD 6.2L |
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03-30-2010, 02:04 PM
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#5 |
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Sleepy
Join Date: Mar 2010
Posts: 16
Rep Power: 11 |
Yeah, engines stock top to bottom aside from the supercharger kit. The kit included 32 lb. injectors and a cobra fuel pump if I remember correctly. Wish I could say I know more but I bought it used with the supercharger already installed.
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04-01-2010, 10:25 PM
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#6 | ||
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Racer
Join Date: Jan 2008
Posts: 1,238
Rep Power: 14 |
32lbs injectors wont take you to 484wwhp my friend.Happy dyno or someone elses numbers.Most blower kits come with a min of 39s to 42lbs injectors,39s will be blue pin style injectors with a ev6 plug,42s will be green top fat bocsh style.Both will support close to 500whp with big fuel pumps.
3vs as long as the tune is solid and you have fuel system will live at 500 to 520 max on a blower.
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 Owner of the most feared street car in salinas!!!! Quote:
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04-01-2010, 10:26 PM
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#7 | ||
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Racer
Join Date: Jan 2008
Posts: 1,238
Rep Power: 14 |
what blower is on the car?
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Owner of the most feared street car in salinas!!!! Quote:
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04-02-2010, 12:17 AM
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#8 |
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Sleepy
Join Date: Mar 2010
Posts: 16
Rep Power: 11 |
W140ax Whipple
38lb. injectors Here's a link to the kit, those numbers are my cars numbers. http://www.whipplesuperchargers.com/...sp?ProdID=1208 It's the HO with intercooler and the pulley is 3.375" which Lethal Performance says is good for 10-11lbs boost. Aside from FRPP GT mufflers it seems stock. I bought the car used and its got about 36k miles on it. |
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04-02-2010, 06:31 PM
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#9 | ||
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Racer
Join Date: Jan 2008
Posts: 1,238
Rep Power: 14 |
we can ad a lbs or two and retune it,most of the time there good for 500 to 520 whp max.Lmk im a whipple dealer and registered sct tuner and dynojet dyno shop.And i own my own 3v and 850whp cobra.We know mustangs.
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Owner of the most feared street car in salinas!!!! Quote:
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04-02-2010, 06:41 PM
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#10 |
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Nifty50
Join Date: May 2008
Location: All Over
Posts: 223
Rep Power: 13 |
How much to swap in a 5speed in an aod equiped fox
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