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

cobra upgrades

  • Thread starter Thread starter mike3488
  • Start date Start date Sep 6, 2011

mike3488

New Member
May 23, 2010
8
0
0
Sep 6, 2011
#1
  • Sep 6, 2011
  • #1
Hey guys,

I did some searches and came up empty so I decided to ask my questions here in hopes that someone out there is running a 93 cobra or have done similar upgrades.

1. I bolted on my gt40 heads and my original spark plugs dont fit. I take it the spark plugs for the gt40s are different than stock heads?

2. When I measure the opening on my upper intake, its at 70mm but when I research it AS WELL AS talk to summit/cjponyparts/NAPA they tell me I need to go with a 65mm throttle body. I found that the stock 93 cobra came with a 65mm tb even though the opening is 70mm. I pretty much have the same set up now as the 93 cobra so am I fine going sticking with the BBK 65mm tb I have?

I think thats all I have for now. Thanks!!

Mike
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
5,232
2,652
223
gainesville
Sep 6, 2011
#2
  • Sep 6, 2011
  • #2
Use plugs for a 96 explorer. You will be fine with a 65mm TB.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,366
18,112
224
Massachusetts
Sep 6, 2011
#3
  • Sep 6, 2011
  • #3
Plugs are same for explorer, or 93-95 Cobra

65MM TB is fine to use. I have one in my car on a cobra intake. However, if you are buying a TB and the decision is between 65 and 70...get the 70.
 

mike3488

New Member
May 23, 2010
8
0
0
Sep 6, 2011
#4
  • Sep 6, 2011
  • #4
Am i holding back power staying with a 65mm or is 5mm not really noticable?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,366
18,112
224
Massachusetts
Sep 6, 2011
#5
  • Sep 6, 2011
  • #5
You wont really notice
 

mike3488

New Member
May 23, 2010
8
0
0
Sep 6, 2011
#6
  • Sep 6, 2011
  • #6
Okay, I was close to sending it back for a 70mm. Thanks again!!
 
D

Deleted member 87397

Sep 7, 2011
#7
  • Sep 7, 2011
  • #7
Yeah you can still make a ton of power with a 65 before it runs out of steam. The smaller diameter will hopefully help keep your intake velocity higher as well.
 
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