Skip to main content
Topic: Question for those still running a stock airbox on the 5.0 (Read 2795 times) previous topic - next topic

Question for those still running a stock airbox on the 5.0

Reply #15
I have the hole in the airbox sealed to the fender on my Thunderbird with foam window strip. The intake can only get air from the inner fender that way. I don't know if it helps but it might.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Question for those still running a stock airbox on the 5.0

Reply #16
I've seen some actual flow tests where aftermarket filters actual flow worse then the stock paper one, while allowing particulates 40x the size in.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

Question for those still running a stock airbox on the 5.0

Reply #17
Lou, got the box.  Thank you.  Any idea what that little tube at the front of it is?  The one with the mini panel filter behind it.  I don't recall ever seeing that on any 5.0 airbox before. 



I ran the part number through EB=bay and every other one that showed up didn't have this provision.....  Weird.  I'll just plug it, but I'm really curious as to what this would have been for and what car it may have been used on.....
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Question for those still running a stock airbox on the 5.0

Reply #18
I don't have one of those little tubes either
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
[/COLOR]
5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
Join us on Facebook

Question for those still running a stock airbox on the 5.0

Reply #19
I THINK a V-6 had that.....I want to say my first Bird....yeeeears ago, had that.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Question for those still running a stock airbox on the 5.0

Reply #20
Quote from: V8Demon;432165
Lou, got the box.  Thank you.  Any idea what that little tube at the front of it is?  The one with the mini panel filter behind it.  I don't recall ever seeing that on any 5.0 airbox before. 



I ran the part number through EB=bay and every other one that showed up didn't have this provision.....  Weird.  I'll just plug it, but I'm really curious as to what this would have been for and what car it may have been used on.....

That airbox came out of a 5.0 Thunderbird I found in a junkyard. The stock airbox in my Thunderbird has the same nipple. It was always open to the atmosphere. That little filter keeps dirt from getting in. I think that on 3.8 cars it is used in part of the PCV system. The 88 3.8 cars use the same airbox as the 5.0 cars. I've never seen a Mustang or Mark VII with that fitting but I've seen several 5.0 Thunderbirds/Cougars with it. It was probably easier for Ford to just use the same airbox in the 3.8 and 5.0 cars on the assembly line.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Question for those still running a stock airbox on the 5.0

Reply #21
Aha!

I stumped a few Mustang friends when I showed them the picture of it today.  I must admit I was stumped as well.  It looks as if I pull the metal clip that the fitting and mini-filter and mount point for it will come out.  I'll find a plastic or rubber plug for it. 

Thanks  ;)
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Question for those still running a stock airbox on the 5.0

Reply #22
You should be able to pop that fitting off and plug the hole. I never have. I doesn't interfere with anything if you leave the box stock.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Question for those still running a stock airbox on the 5.0

Reply #23
I just thought of this but I remember you were having some cold start issues. What sample tube do you have in the C&L MAF? There is a specific tube for a cone filter on the end of the MAF which is different from the one that you use with the stock airbox. That *might* cause the issue you have with a cold start.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Question for those still running a stock airbox on the 5.0

Reply #24
I'm running an under hood cone filter.  Calls for the same tube as if it were the airbox.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Question for those still running a stock airbox on the 5.0

Reply #25
Quote from: V8Demon;432229
I'm running an under hood cone filter.  Calls for the same tube as if it were the airbox.

C&L changed the calibration tube chart a year or two ago. See here: http://www.cnlperformance.com/Calibration-chart.php

The blue tube (102) is not even specified for 24lb injector and the 73mm MAF anymore. If your C&L 73mm MAF for 24lb injectors is as old as mine (bought in 2010) than you've got the blue tube (102) in the housing. I called C&L and they said the new tube specified (brown 095) results in a 3-5hp gain from leaning out the air/fuel ratio slightly over the blue 102 tube used only in the 76mm MAF with 24lb injectors now.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

 

Question for those still running a stock airbox on the 5.0

Reply #26
I picked up the meter & tube in 06 or 07.  The local speed shop to me has the tubes in stock.  Might be worth a shot.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!