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is this spreadbore or squarebore

811 Views 2 Replies 3 Participants Last post by  56owner, 
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I was told it was spreadbore but it kinda looks like a squarebore. Then again it looks a bit different then my square bore on my 56...

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lonewolf85
its a square bore

Even though the secondairy throttle plates are larger than the primary that is still a square bore carb. Spread bores like the Rochester Qjet Carter thermoquad or the holley spread bore have very small primary and very large secondairy throttle plates. Randall
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56owner
picture

The picture you posted is a squarebore. Spreadbore carbs have 2 small primary bores and 2 large (2.25 in) secondarys.
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