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252 rwhp stock

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Old Jun 5, 2004 | 03:21 AM
  #1  
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Default 252 rwhp stock

hey guys. just got my car dynoed today. i couldn't believe my eyes when the tech handed me my results. the car got 252 rwhp stock. that is only 8 hp under the flywheel rating. is this even possible?
Old Jun 5, 2004 | 12:07 PM
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Default RE: 252 rwhp stock

yes, especially if the factory numbers and your numbers are not corrected to the same basis atmospheric conditions.
Old Jun 5, 2004 | 12:20 PM
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Default RE: 252 rwhp stock

Stock 99+ 4.6 GT's are 99% of the time between mid 220's and low 230's rwhp
Old Jun 5, 2004 | 01:17 PM
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Default RE: 252 rwhp stock

Hey MD, with all my mods... what kinda RWHP do you think im pushing?
Old Jun 15, 2004 | 01:39 AM
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Default RE: 252 rwhp stock

id say 50 rwhp. that would equal depending on stock numbers 275 rwhp. figured about 30 from the whole exhaust. and id say about 20 25 from the underdrives the cai & mam. dont take that to heart.
Old Jun 15, 2004 | 04:32 AM
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Default RE: 252 rwhp stock

ORIGINAL: 04mustang

id say 50 rwhp. that would equal depending on stock numbers 275 rwhp. figured about 30 from the whole exhaust. and id say about 20 25 from the underdrives the cai & mam. dont take that to heart.

10-15 from the exhaust set up. Maybe an extra 10-15hp from the rest. UD Pulley's on a 4.6 won't do a great deal. The 4.6s stock pulleys are more agressive.

I'd say 25+rwhp total.

Not really anywhere close to 50+.
Old Jun 15, 2004 | 09:49 AM
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Default RE: 252 rwhp stock

there has been quiet a few dynos showin 15rwhp from magnaflow x and catback. LT headers id say 15hp .so you are sayin the whole exhaust combo will give him 10 to 15. hes got the maf done with the cai that can put out at least 12. and i give the underdrives 5. if hes got all that for 25hp then i better get another car. lol. i dont know i think you are figuering alil low.
Old Jun 15, 2004 | 11:37 AM
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Default RE: 252 rwhp stock

ORIGINAL: jdaniel

Hey MD, with all my mods... what kinda RWHP do you think im pushing?
I'd say, with the combo's power like this:

lt...............20 rwhp
x...............7 rwhp
cat............5 rwhp
cai............8 rwhp
maf...........7 rwhp
pulleys.......6 rwhp
adjuster......7 rwhp

total - 60 rwhp

So I'd say you have between 280 - 285 rwhp, thats assuming your still in good tune and a/f is right. Thats about 325 flywheel horsepower.
Old Jun 15, 2004 | 03:11 PM
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Default RE: 252 rwhp stock

i forgot his timming adjuster. with that 60 rwhp sounds about right. JD with all the crap you have you better not get anymore 14s. lol. your in mach1 range with those mods buddy.
Old Jun 15, 2004 | 05:24 PM
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Default RE: 252 rwhp stock

ORIGINAL: 04mustang

there has been quiet a few dynos showin 15rwhp from magnaflow x and catback. LT headers id say 15hp .so you are sayin the whole exhaust combo will give him 10 to 15. hes got the maf done with the cai that can put out at least 12. and i give the underdrives 5. if hes got all that for 25hp then i better get another car. lol. i dont know i think you are figuering alil low.
With long tubes give him another 10rwhp.

Underdrives on a 4.6 will add maybe 3rwhp. I've seen numerous dynos of them. Ford started getting more "Aggressive" with their pulley designs so unlike on the 5.0 a UD Pulley doesn't do as much.

I doubt he's gained 60 or 50rwhp. I'd say 40 to maybe 45.



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