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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

intake manifold spacer

  • Thread starter Thread starter 5.0fox
  • Start date Start date Sep 4, 2004

5.0fox

Member
Feb 10, 2003
410
0
17
buckley/enumclaw wa
Sep 4, 2004
#1
  • Sep 4, 2004
  • #1
is it worth it to install a 3/8" intake spacer while i have the manifold off to put my afpr on? will it improve horsepower and torque like a carb spacer or is it useless.

thx in advance
 

mustangsquared

Founding Member
Jun 8, 2002
828
1
16
new bern nc
Sep 4, 2004
#2
  • Sep 4, 2004
  • #2
I added the spacer...I thought it added some low end tq...but then again that was based on sotp. Cant hurt to do it.
 

5.0fox

Member
Feb 10, 2003
410
0
17
buckley/enumclaw wa
Sep 4, 2004
#3
  • Sep 4, 2004
  • #3
anyone else?
 

giddyup306

Founding Member
Oct 22, 2002
3,041
2
59
Sep 4, 2004
#4
  • Sep 4, 2004
  • #4
By increasing the runner length you will increase low end power but suffer on the high end. If you have an auto go for it. I have a heat spacer on my standard trans car but that is only for valve cover clearance.
 

jaidedeye

Member
Apr 4, 2004
627
0
16
Goldsboro nc
Sep 4, 2004
#5
  • Sep 4, 2004
  • #5
i also am putting a 1 inch spacer on my car.....do you think a 1 inch will make a difference?
 

PhLoBuS

New Member
Aug 15, 2004
473
0
0
Beverly, MA
Sep 4, 2004
#6
  • Sep 4, 2004
  • #6
yeah get the spacer
 

Michael Yount

Mustang Master
Apr 10, 2002
9,039
6
79
Charlotte, NC
Sep 4, 2004
#7
  • Sep 4, 2004
  • #7
It is used primarily to create valve cover clearance. The extra runner length may affect power/torque curves - a bit more torque at lower rpm; a bit less power at peak -- but nothing significant. If you're iceing intake components at the strip between rounds, it may let you cool the upper down a bit more effectively. But as a practical matter - if you need more clearance, use the spacer. If you're looking for more performance, spend your money elsewhere.
 

Kdubslugga

Active Member
Jun 7, 2003
1,515
3
38
Akron, OH
Sep 4, 2004
#8
  • Sep 4, 2004
  • #8
go ahead and get it! Im not sure if it adds any noticeable HP, but i can definetly tell the upper intake is not nearly as hot as it was before!!
 

Michael Yount

Mustang Master
Apr 10, 2002
9,039
6
79
Charlotte, NC
Sep 4, 2004
#9
  • Sep 4, 2004
  • #9
Spacer or no, on a street car, the upper is gonna heat sink to the same temp it always has.....it might take a bit longer with the spacer, but it's still gonna get just as warm.
 

ponyboy19

Founding Member
May 24, 2000
1,640
0
36
Sep 4, 2004
#10
  • Sep 4, 2004
  • #10
jaidedeye said:
i also am putting a 1 inch spacer on my car.....do you think a 1 inch will make a difference?
Click to expand...

I wouldn't use a 1". I used one on a previous combonation and it KILLED the top end power of my edelbrock performer intake. It was on for about an hour and off it came and on went a 3/8". Just enough to clear everything I needed too, and BTW the 3/8 IMO didn't add any gains that you could honestly say could be felt. I agree with Michael Yount, unless it's for clearance, I'd spend money elsewhere.
 

Michael Yount

Mustang Master
Apr 10, 2002
9,039
6
79
Charlotte, NC
Sep 5, 2004
#11
  • Sep 5, 2004
  • #11
I suppose I should add, I use a 1" on mine for clearance between the valve cover and the throttle body linkage. I have no egr spacer, and when I moved the throttle body that much closer to the intake, the bottom of it hit my Cobra valve covers. The spacer resolved that - and based on some temp. data I took when building my cold air box and relocating my ACT sensor, I don't think it made any difference on intake air temps - other than perhaps keeping them a bit lower for a bit longer - til the upper heat sinks along with everything else in the compartment.
 

jaidedeye

Member
Apr 4, 2004
627
0
16
Goldsboro nc
Sep 5, 2004
#12
  • Sep 5, 2004
  • #12
ponyboy19 said:
I wouldn't use a 1". I used one on a previous combonation and it KILLED the top end power of my edelbrock performer intake..
Click to expand...


i have gobs of top end to spare with my set up.....and if a 1 inch spacer gives me some low end thats fine
 

5.0fox

Member
Feb 10, 2003
410
0
17
buckley/enumclaw wa
Sep 5, 2004
#13
  • Sep 5, 2004
  • #13
thanks for the insight i think im gonna go with a 3/8" spacer. its only $20 i dont got much to lose
 
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