4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Head swap vs. S/C

Old 01-28-2005, 12:22 AM
  #11  
Acer2428
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Default RE: Head swap vs. S/C

You can look at forums all you want......

There's no way my car would run a 13.9 or slower... No FREAKING WAY...
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Old 01-28-2005, 12:40 AM
  #12  
98stngfrk
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Default RE: Head swap vs. S/C

No reason to get an attitude and act like a baby, i was just takeing what other people's info said and putting that together. If only one would had said that then i wouldn't have said anything, you asked for help and i just offered my opinion and what i learned up here, so hey if you don't want to listen at all then DONT POST makes decent sense to me. Sorry for trying to help.
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Old 01-28-2005, 02:36 AM
  #13  
silver04stang
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Default RE: Head swap vs. S/C

i know he's right about pre PI times...ive been to the track and seen guys with pre pi stangs and superchargers and only running high 13's as well...im not trying to **** anyway off either, but im just backing him up cause hes right...wouldn't you like to find out now rather than later on???
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Old 01-28-2005, 02:40 AM
  #14  
neogenic83
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Default RE: Head swap vs. S/C

U got to think the pre PI's were 15's cars. they only put down 180-190 to the wheels. putting a blower on them knocks them down 2 sec which is in the 13's
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Old 01-28-2005, 03:06 AM
  #15  
Acer2428
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Default RE: Head swap vs. S/C

Still, there are cars in our club running faster than that, so there's no use in arguing, I've seen it done... 13.2-13.5 I would say is reasonable w/ a fairly stock car w/ just a blower.

As stated in another thread I ran a 15.0 in stock trim w/ fuggered up MAF and plug wires = I have a 14 sec car, esp now... 2 seconds off that is into the 12's, so your logic doesn't work. With gears I would hope to be eclipsing the 14.0 mark anyways, so there's no way a blower would only take .3-.4 off of my times. I was saying MY CAR will run faster than a 13.9 w/ a blower.

Also notice I said I was going to do heads later, but should I pick up the S/C now at that price?

Thanks for answering the question...
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Old 01-28-2005, 03:54 AM
  #16  
stonemonk9
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Default RE: Head swap vs. S/C

Well, if your overall goal is to get charged, then go for it, i havnt done much research on it but that seems like a good price. Also remeber after you do eventually get the heads its going to rasie compression therfore you cant run too much boost. I think for 3k you could prob get more power out of getting the heads ported getting some cams spending prob about 1200 or so for about 60-80 rwhp, then you still have another 1800 to blow on say a fox lake p51 intake kit!? idono, or lng tubes and gears if you dont have them, or hold on to that 1800 and save up another 1200 for the supercharger...... idono sooo many options. Hope I helped alil
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Old 01-28-2005, 04:01 AM
  #17  
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Default RE: Head swap vs. S/C


ORIGINAL: Emann0007

keep savin and get a KB S/C!!! Go all out.
HAHA KB is not all out, nor the god of superchargers. anyway all out would constitute getting (a) turbo(s)
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Old 01-28-2005, 04:44 AM
  #18  
BCisme
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Default RE: Head swap vs. S/C

acer, you need to realize how restrictive the non pi heads cams and intake are. theres a guy in my area selling a s/c'd stang and with 10#'s hes only making 310 hp and 386 torque. he also just put it in the shop to rebuild the motor.

with bigger injectors and a few other little items, i'd be making the same of not more hp. some guys are, on stock bottom ends. the headswap is also more reliable. less stress on your stock motor.

do NOT s/c your non pi motor. do the headswap.
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Old 01-28-2005, 05:44 AM
  #19  
USAMuscle
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Default RE: Head swap vs. S/C

I agree with BC. Do the heads now because those are your biggest obstacle. I forget where I read it, but I read somewhere that somebody sells thicker head gaskets for the 4.6 which will bring the compression down to about 9.5:1 for PI heads on a non-PI car. Either way if you do the heads first, you'll see bigger gains with all your successive mods as well.
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Old 01-28-2005, 06:41 AM
  #20  
BCisme
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Default RE: Head swap vs. S/C


ORIGINAL: USAMuscle

I agree with BC. Do the heads now because those are your biggest obstacle. I forget where I read it, but I read somewhere that somebody sells thicker head gaskets for the 4.6 which will bring the compression down to about 9.5:1 for PI heads on a non-PI car. Either way if you do the heads first, you'll see bigger gains with all your successive mods as well.
also remember if you want to go blown in the future, you'll need to put a forged short block in (do the whole block, stock is rated to 600 hp before splitting, an aftermarket will hold more) so you'll have to redo all those gaskets anyways. also, your shorblock will be built for low compression. you'll most likely be installing a strong graphite headgasket set to hold the boost in. so keep the compression until you do your block. VT stage II and most comp cams make good power n/a or blown.
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