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impstocker · 02-13-2016, 06:35 PM

Putting together my 396/325 BBC for my 1965 Impala. I want to run the Holley carb which came on the 1965-66 396/325 (also with Quadrajet.)

Wouldn't I be able to use aoff the shelf Holley 1850 600 CFM carb? Same Throttle bore diameters and Venturi size as a original Holley.

Would I need to ask NHRA if they would add it as a replacement carb? Has anybody ever tried this?

02-13-2016, 06:35 PM	#1
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	Holley 1850 replacement carb Putting together my 396/325 BBC for my 1965 Impala. I want to run the Holley carb which came on the 1965-66 396/325 (also with Quadrajet.) Wouldn't I be able to use aoff the shelf Holley 1850 600 CFM carb? Same Throttle bore diameters and Venturi size as a original Holley. Would I need to ask NHRA if they would add it as a replacement carb? Has anybody ever tried this?