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

408w which air intake?

  • Thread starter Thread starter liquid_02
  • Start date Start date Apr 24, 2008
L

liquid_02

New Member
Sep 10, 2006
34
0
0
Apr 24, 2008
#1
  • Apr 24, 2008
  • #1
Ok so, I've just finished spending about 7 grand on building this motor, and now the simplest thing is puzzling me. What air intake to go with that will have a large enough diameter tubing for my MAF and T/B (i'm keeping the car injected).

For those of you who care, Here is the motor:

408w w/ all forged internals w/22cc pistons
Victor Jr. Heads
Hooker Long tubes
Comp Cams custom roller cam (.571/260)
Comp 1.6 Hi-Tek Roller Rockers
TFS R-series 75mm intake
Accufab 75mm T/B
PMAS 80mm MAF
Canton 7qt Oil Pan
42# injector
Mallory Fuel Rail/Regulator
HV Oil Pump
Comp billet Timing chain/gears
and of course Tweecer

Following it a T-56 trans (non viper) and a 9" Rear w/ trak-lok w/ 3.55's (still building the rear)

Anyways, so I need an air intake with a duct big enough for my 80mm MAF, I have a MAC kit on the car right now (with the 5.0 in it) but the car's in storage so I can't measure it, but I believe it's about 70mm that one, as it fit my holley 70mm t/b perfect if i remember. Nobody says how big their ducting is so I don't want to buy then find out it's too small.

Thanks in advance guys
 

a885.0

20+ Year Stangneter
Feb 2, 2004
78
5
8
CT
Apr 24, 2008
#2
  • Apr 24, 2008
  • #2
anderson 4'' power pipe, I will post some pics. if you want, Iam running it on my 410w with a 90mm throttle body and 90mm sct mass air meter.
 
L

liquid_02

New Member
Sep 10, 2006
34
0
0
Apr 24, 2008
#3
  • Apr 24, 2008
  • #3
yeah, that'd be awesome, thank you
 

BlooDReigN

Member
Feb 22, 2004
283
1
16
Calgary, Alberta
Apr 25, 2008
#4
  • Apr 25, 2008
  • #4
You don't need a 4" power pipe if you have a 75mm throttle body. All you need is a 3" cold air intake, which even the cheapest cold air intakes are. Don't bother with an expensive cold air intake if all you have is a 75mm throttle body.

I went with a 4" CLT intake on my 408...You can see it in my progress thread in my sig. I have a 90mm throttle body on my TFS Box R intake manifold however, so it was actually worth while.

Keep you Mac intake, it will work fine...It's not worth the expense unless you upgrade to a intake with a 90mm throttle body opening and a 90mm throttle body.
 

enyawix

Member
Dec 18, 2005
507
0
19
127.0.0.1
Apr 25, 2008
#5
  • Apr 25, 2008
  • #5
I would use Edelbrock RPM Air-Gap Intake. Yes I know that is not a EFI intake just tap it for fuel injector bungs. holley part number 534-83. You will also need an intake elbow to mount your throttle body.
 

Mr. Rustypwnz

Advanced Member
Jun 1, 2005
1,761
63
69
indianapolis/ valdosta ga
Apr 26, 2008
#6
  • Apr 26, 2008
  • #6
I would use Edelbrock RPM Air-Gap Intake. Yes I know that is not a EFI intake just tap it for fuel injector bungs. holley part number 534-83. You will also need an intake elbow to mount your throttle body.
Click to expand...

I believe they are talking about cai's...
 
3

347HO

Member
Jan 13, 2008
462
2
16
Seattle
Apr 26, 2008
#7
  • Apr 26, 2008
  • #7
enyawix said:
I would use Edelbrock RPM Air-Gap Intake. Yes I know that is not a EFI intake just tap it for fuel injector bungs. holley part number 534-83. You will also need an intake elbow to mount your throttle body.
Click to expand...

Holy Cow!
EFI intakes require a very different design compared to carburated concerning laminar and boundary layers in airflow.

Below IMO is all too true.
If I were to build an efi, it would have the TFS R box/Canfield EFI/Super Victor EFI and as big a TB as I could buy at the time.

BlooDReigN said:
You don't need a 4" power pipe if you have a 75mm throttle body.
I have a 90mm throttle body on my TFS Box R intake manifold however, so it was actually worth while.

Keep you Mac intake, it will work fine...It's not worth the expense unless you upgrade to a intake with a 90mm throttle body opening and a 90mm throttle body.
Click to expand...
 
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