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  • SN95 4.6L Mustang Tech

need to keep going

  • Thread starter Thread starter 4.6rx7
  • Start date Start date Nov 11, 2006
4

4.6rx7

New Member
May 11, 2006
48
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0
Nov 11, 2006
#1
  • Nov 11, 2006
  • #1
should i keep going

im new to the 4.6 engine. what i did was put one in my 90 rx7 vert. after weight reduction and the motor i hope to be at 2800 - 3000 lbs. i used the aode trans and have 4.10 gears. i had planned on shorty headers ,intake , plenum ,75mm tb, and spacer, 80 mm maf underdrive pullys ,ac delete ,cams w 6 degree out timing, and some kind of chip or tune. the mtor is from a 96-97 t bird and the pcm is from a 95 crown vic pi. can anyone give me a ball park figure of what my hp will be. i heard these are hard to pull power from.by the way its a 2v.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,164
17,859
224
Massachusetts
Nov 11, 2006
#2
  • Nov 11, 2006
  • #2
Maybe stock around 200-215HP

Your biggest HP gain would come by performing a PI-swap by installing heads, cam and intake off an 99+ Mustang or 01+ crown vic. The cams will give you the biggest boost alone.

Unsure how good a crown vic computer would be, but with the PI swap plus additional mods, i would recommend a custom tune over an off-the-shelf chip.
 
W

WillDuhhBeast

New Member
Jun 25, 2005
339
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0
Jacksonville Florida
Nov 11, 2006
#3
  • Nov 11, 2006
  • #3
That sounds like a ton of effort for really little performance output.



But I'm still interested.



I agree on the PI swap.. having it not PI'd would be pointless I think.
 

four six

Member
Jan 19, 2006
506
2
18
Hobart, IN
Nov 11, 2006
#4
  • Nov 11, 2006
  • #4
PI setup heads, cams, intake
 
4

4.6rx7

New Member
May 11, 2006
48
0
0
Nov 11, 2006
#5
  • Nov 11, 2006
  • #5
what kind of hp we talking if i cant get to 350 then there is no point to finish
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,164
17,859
224
Massachusetts
Nov 11, 2006
#6
  • Nov 11, 2006
  • #6
You aren't gonna do it on bolt-ons. You'll need to dig into the motor and replace the heads/cams with ported heads and aftermarket camshafts.

You didn't really pick the best 2V motor to start from. A 99+ 2v from a Mustang would have been better
 

four six

Member
Jan 19, 2006
506
2
18
Hobart, IN
Nov 11, 2006
#7
  • Nov 11, 2006
  • #7
turbo or supercharger
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Nov 11, 2006
#8
  • Nov 11, 2006
  • #8
4.6rx7 said:
im new to the 4.6 engine. what i did was put one in my 90 rx7 vert. after weight reduction and the motor i hope to be at 2800 - 3000 lbs. i used the aode trans and have 4.10 gears. i had planned on shorty headers ,intake , plenum ,75mm tb, and spacer, 80 mm maf underdrive pullys ,ac delete ,cams w 6 degree out timing, and some kind of chip or tune. the mtor is from a 96-97 t bird and the pcm is from a 95 crown vic pi. can anyone give me a ball park figure of what my hp will be. i heard these are hard to pull power from.by the way its a 2v.
Click to expand...


first of all, unless you are adding some serious power, use a stock maf. forget the throttle body spacer, it pretty much worthless.

and are you sure it will even fit into the Rx7? the 4.6L is a pretty large engine.
 
P

Pennywise2

Banned
May 16, 2006
1,379
1
0
Nov 11, 2006
#9
  • Nov 11, 2006
  • #9
DBMSTNG said:
first of all, unless you are adding some serious power, use a stock maf. forget the throttle body spacer, it pretty much worthless.

and are you sure it will even fit into the Rx7? the 4.6L is a pretty large engine.
Click to expand...
Yes,I highly doubt a 4.6L engine with everything else will fit in the engine bay
of a 90 Mazda RX7.
 
4

4.6rx7

New Member
May 11, 2006
48
0
0
Nov 11, 2006
#10
  • Nov 11, 2006
  • #10
ive already had it in and running , heres a pic
 

Dan_Soprano

15 Year Member
May 7, 2003
7,410
53
129
Jacksonville, FL
Nov 11, 2006
#11
  • Nov 11, 2006
  • #11
4.6rx7 said:
ive already had it in and running , heres a pic
Click to expand...
ummm, no pic....
 
4

4.6rx7

New Member
May 11, 2006
48
0
0
Nov 11, 2006
#12
  • Nov 11, 2006
  • #12
file is to big sorry
 
R

rgeeezy

New Member
Jun 25, 2005
24
0
0
Nov 12, 2006
#13
  • Nov 12, 2006
  • #13
you guys have never heard of an ls1 or an ls6 in an rx7 fc and fd body? its been done many times very successfully. im sure the 4.6 would fit in there no problems. how come you didnt go with an ls1 motor???
 
4

4.6rx7

New Member
May 11, 2006
48
0
0
Nov 12, 2006
#14
  • Nov 12, 2006
  • #14
i had it laying around . plus i like the mod motors i just didnt think it would be hard to pull power from. i figured in a light car i would be able to give camaros a run for thier money but guess not
 
4

4.6rx7

New Member
May 11, 2006
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0
Nov 12, 2006
#15
  • Nov 12, 2006
  • #15
here you go
 

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DBMSTNG

I fantasize about it being BIG!
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Apr 23, 2002
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Nov 12, 2006
#16
  • Nov 12, 2006
  • #16
rgeeezy said:
you guys have never heard of an ls1 or an ls6 in an rx7 fc and fd body? its been done many times very successfully. im sure the 4.6 would fit in there no problems. how come you didnt go with an ls1 motor???
Click to expand...


have you ever seen a LS1 next to a 4.6L? the 4.6L is much bigger size wise. the 4.6L is close to the size of a Ford 460ci.
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Nov 12, 2006
#17
  • Nov 12, 2006
  • #17
4.6rx7 said:
i had it laying around . plus i like the mod motors i just didnt think it would be hard to pull power from. i figured in a light car i would be able to give camaros a run for thier money but guess not
Click to expand...


with PI heads, you should be able to run with LS1's. the non-PI heads just suck.
 
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