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Old 04-01-2017, 02:05 PM   #1
RPOZ11
72 BB C30 Super LongHorn
 
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Thorley BBC header ID help

Thorley BBC header ID help

Can you help me identify the application of each of these?
I have 4 sets.
And one set I had made into 3" collectors...
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72 BB C/30 Longhorn Super
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HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS

Last edited by RPOZ11; 04-01-2017 at 04:30 PM.
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Old 04-01-2017, 02:07 PM   #2
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Re: Thorley BBC header ID help

Here is the 2'nd one from the top fitted that had the tubes stacked near the collector
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72 BB C/30 Longhorn Super
HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM


HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS
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Old 04-01-2017, 02:27 PM   #3
RPOZ11
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Re: Thorley BBC header ID help

Header 3'rd from the top with stacked tubes before the collector :
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72 BB C/30 Longhorn Super
HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM


HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS
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Old 04-01-2017, 02:51 PM   #4
RPOZ11
72 BB C30 Super LongHorn
 
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Re: Thorley BBC header ID help

Coated with stacked tubes before 3" collector :
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72 BB C/30 Longhorn Super
HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM


HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS
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Old 04-01-2017, 02:53 PM   #5
camtoys1
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Re: Thorley BBC header ID help

there is a part number on the header flange you can look it up on line
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Old 04-01-2017, 04:31 PM   #6
RPOZ11
72 BB C30 Super LongHorn
 
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Re: Thorley BBC header ID help

303Y on one set

The one set with the O2 sensor is dated 8/98

The black painted header has a different 2 tube end arrangement prior to the collector.

The black painted one must be an earlier release.
I've noticed that the collector ring is 1 hole down, then 2 holes to the top
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72 BB C/30 Longhorn Super
HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM


HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS

Last edited by RPOZ11; 04-01-2017 at 04:43 PM.
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Old 04-02-2017, 05:48 PM   #7
RPOZ11
72 BB C30 Super LongHorn
 
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Re: Thorley BBC header ID help

Here is the black painted one installed with the offset 2 tubes prior to the collector:
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72 BB C/30 Longhorn Super
HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM


HO72 build :
http://67-72chevytrucks.com/vboard/s...d.php?t=714492

2017 SS
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