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By Shaggy - 9 Years Ago
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It's turning out my rebuilt '57 bird 4150 style holley(1273 ECZ-V) is kind of a mutt, biggest issue i see is that it's using #109 butterflys which should be on something like a 600 cfm. It already has the right linkage and seems to cover all the passages right though so i'm almost debating on using it. Is this going to cause issues? I kind of feel like having a step between my body and base plate might cause idle issues since the idle mixture is in there.
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By chris70 - 9 Years Ago
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Holley doen't make base plates for the smaller carbs as spare parts,The only chance you have is to find a cheap 465 or 390 cfm to use as a part giver!
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By DryLakesRacer - 9 Years Ago
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The Venturi determines the cfm along with the base plate. A 750 plate could actually help. You can buy new bases on Summit by one of there suppliers Quick Fuel comes to mind.
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By Shaggy - 9 Years Ago
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chris70 (6/18/2016)
Holley doen't make base plates for the smaller carbs as spare parts,The only chance you have is to find a cheap 465 or 390 cfm to use as a part giver!
I think i have 4 450cfm's and 1 more t-bird carb so i'm good to go there, i was just being lazy and didnt want to have to rebuild stuff
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