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FED 387 · 10-04-2007, 09:43 PM

AHeli coil does sell a 12-24NC but no 12-28NF---you might try a 12-24 and then run a 12-28 tap thru it see if it works---not sure if there are passages in the side of where the bolt goes thru--you might try the tech dept at Holley or any reputable carb guy to get an answer--Comp 387

10-04-2007, 09:43 PM	#5
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 531 Liked 333 Times in 180 Posts	Re: Holley Carb Question AHeli coil does sell a 12-24NC but no 12-28NF---you might try a 12-24 and then run a 12-28 tap thru it see if it works---not sure if there are passages in the side of where the bolt goes thru--you might try the tech dept at Holley or any reputable carb guy to get an answer--Comp 387