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New SR 70mm tb too big for the hood?

  • Thread starter Thread starter ACK0824
  • Start date Start date Oct 31, 2020
A

ACK0824

New Member
Oct 2, 2020
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Nixa, MO
Oct 31, 2020
#1
  • Oct 31, 2020
  • #1
Hey guys

I installed the SR 70mm throttle body from American Muscle on my 88 GT the other day and it the vacuum line on the top rubs the stock hood. Anyone have this problem?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Oct 31, 2020
#2
  • Oct 31, 2020
  • #2
What’s your intake manifold setup?
 
A

ACK0824

New Member
Oct 2, 2020
3
0
1
Nixa, MO
Oct 31, 2020
#3
  • Oct 31, 2020
  • #3
Mustang5L5 said:
What’s your intake manifold setup?
Click to expand...
Stock
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Oct 31, 2020
#4
  • Oct 31, 2020
  • #4
Pics??
 
Reactions: KRUISR

Wayne Waldrep

Before I post a pic, do you have one of yours?
20+ Year Stangneter
Apr 14, 2003
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Cuba, AL
Oct 31, 2020
#5
  • Oct 31, 2020
  • #5
I gotta see that ...lol.
 
Reactions: nickyb

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,265
17,952
224
Massachusetts
Oct 31, 2020
#6
  • Oct 31, 2020
  • #6
Hitting the hood with a tb on a stock intake is intetesting. Should be tons of clearance on a stock hood. Let’s see pics of the tb
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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Kearney, NE
Oct 31, 2020
#7
  • Oct 31, 2020
  • #7
After you get the clearance addressed, have you ported the manifold throat to 70mm (or at least checked if it can be matched) and how about the EGR plate? The step in the mismatch can interrupt airflow.
 
A

ACK0824

New Member
Oct 2, 2020
3
0
1
Nixa, MO
Oct 31, 2020
#8
  • Oct 31, 2020
  • #8
I took it off and put the original back on. The SR is sitting in my garage waiting for me to figure this out and reinstall it.
 
C

Cyajojo

Member
May 2, 2020
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Foristell, MO
Nov 7, 2020
#9
  • Nov 7, 2020
  • #9
It still should be lower the electronic harness... not sure why it is hitting
 

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Wayne Waldrep

Before I post a pic, do you have one of yours?
20+ Year Stangneter
Apr 14, 2003
1,338
659
143
Cuba, AL
Nov 7, 2020
#10
  • Nov 7, 2020
  • #10
So are we not getting a pic of even the factory one reinstalled or of the actual tb that's supposed to be hitting.... Or anything? Everyone has asked for pics. Can't help without. Hold the new one by the old one and show us please.
 

jrichker

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Dublin GA
Nov 9, 2020
#11
  • Nov 9, 2020
  • #11
ACK0824 said:
Hey guys

I installed the SR 70mm throttle body from American Muscle on my 88 GT the other day and it the vacuum line on the top rubs the stock hood. Anyone have this problem?
Click to expand...

You'll never flow enough air to need a 70 MM TB with the stock heads, cam and intake.
Unless you have pressurized induction, or aftermarket cylinder heads and intake manifold, the 70 MM TB is just about a effective as racing stripes on the car. The flow is limited by the lowest flowing item in the intake path. On a stock engine, the E7 heads are the airflow bottleneck, along with the stock intake manifold.

Put your stock TB back on and sell the 70 MM TB to someone who has high flow aftermarket HCI (Heads, Cam, and Intake) or pressurized induction.
 
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