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  • 2005 - 2014 S-197 Mustang -General/Talk-
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  • Thread starter Thread starter 07gtfolife
  • Start date Start date Mar 20, 2007
0

07gtfolife

New Member
Oct 31, 2006
125
0
0
Mar 20, 2007
#1
  • Mar 20, 2007
  • #1
Whats the deal with the 1 3/4 and 1 5/8? I noticed on brenspeed that the macs are 1 3/4 and the kooks and other such brands are 5/8's. Just wondering.
 

bigcat

start with the upper hole, and if more traction is
May 1, 2005
3,015
1
79
7200 feet
Mar 20, 2007
#2
  • Mar 20, 2007
  • #2
different size primary tubes. selection will depend on your particular application. bigger is not always better.
 

anthony05gt

Active Member
Mar 18, 2006
1,262
1
37
Maryland
Mar 20, 2007
#3
  • Mar 20, 2007
  • #3
The larger diameter tubes are for engines running excessive boost like over 500 rwhp. Otherwise, the larger tubes are for big block engines.
 
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