Supercharger Vs Heads

S

Sellout

New Member

Oct 31, 2004

43

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Mar 31, 2005

#1

• Mar 31, 2005

• #1

I am tring to decide wether to go with a 6psi S/C or PI swap. I know the money is quiet a bit different. I was wondering what would be better for drivability. how much higher octane do you have to run with a S/C. I know both heads and sc would be ideal but I am trying to think realistic. What will be more reliable? The highest octane in my town is 90, and I would hate to be adding octane booster to every tank . To sum this up I pretty much just want to run the safest setup with getting about an extra 70 HP or so. Sorry if there was a thread like this already, I search but couldn't find one.

EDIT: Damn, I ment to put this in tech.

 

HandofDoom_

Banned

Mar 30, 2005

20

0

0

Oh god, did you eat all this acid?

Mar 31, 2005

#2

• Mar 31, 2005

• #2

Get the heads. 90 octane + S/C = death to motor

 

S

Sellout

New Member

Oct 31, 2004

43

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Mar 31, 2005

#3

• Mar 31, 2005

• #3

Bump

 

streetstang03

unModerator

Dec 27, 2003

0

1

0

the dark side of the moon/home of the 1999, 2003,

Mar 31, 2005

#4

• Mar 31, 2005

• #4

full PI swap and VT stage I cams.

 

DBMSTNG

I fantasize about it being BIG!

Founding Member

Apr 23, 2002

2,120

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56

not quite here

Mar 31, 2005

#5

• Mar 31, 2005

• #5

heads

 

mrvax

Stay thirsty my friends

Founding Member

Nov 29, 1999

5,225

3

79

SN Moderator: Orlando, Fl.

Mar 31, 2005

#6

• Mar 31, 2005

• #6

2 1/2 years ago I faced the same decision. Either way you will probably need better than 90 octane. S/Cs like high octane and so do headswaps with 10.5:1 compression. (Usually the timing gets bumped also.)

I chose the PI swap b/c the whole top of my engine is now new. You don't need a dyno tune but can get one to add a few more ponies or have your EEC reprogrammed like I did.

The S/C may give 20-25 more HP but you can still make that up with mods.

 

S

StangGT96

New Member

Jul 1, 2004

94

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El Paso, TX

Mar 31, 2005

#7

• Mar 31, 2005

• #7

With the heads can you run 90 octane? I thought it raised the compression ratio to 10:1 with the 1996-98 pistons.

 

mrvax

Stay thirsty my friends

Founding Member

Nov 29, 1999

5,225

3

79

SN Moderator: Orlando, Fl.

Mar 31, 2005

#8

• Mar 31, 2005

• #8

It's supposed to be 10.5:1 and I have never tried anything less than 93. My timing is bumped also. Why not try 90, keep the timing stock and see what happens. If it knocks/pings under full throttle then you know you have to upgrade. Every car is a bit different.

 

C

Chopper1

New Member

Jan 2, 2005

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Wv

Mar 31, 2005

#9

• Mar 31, 2005

• #9

The head porting company will be able to adjust the compression ratio by removing material to lower compression to match the piston tops.I personally like the head/cams option over S/C's.

 

Gunfighter

Founding Member

Nov 30, 1999

186

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0

Grapevine, TX

Apr 1, 2005

#10

• Apr 1, 2005

• #10

Given the octane issue, I'd go w/new heads/cams/intake/TB. Also a CAI or other exhaust mods if you don't already have them