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Carb velocity stacks - are these HS2 or HS4?

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Atrus

Atrus

Jedi Warrior
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Curious to know which SU's these look like they fit. The seller isn't sure. He did give me the I.D. at the flange, and said they are 1.50". Does this mean HS4?

Ebay Link to Stacks
 
the final number in SU carb designations is how many eighths of and inch OVER 1 inch the throat of the carb is. Thus and HS2 is 1 1/4", HS4 1 1/2" HS6 .. 1 3/4".. so if its 1.50" its for and HS4.
 
Thanks for the info, it's appreciated. :smile:
 
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