hello all, i am new to this forum but i found almost what i was looking for an a post on this web site. i have a 72 LS5 Corvette that i just bought from an uncle. i am currently trying to figure out what is origianal to the car and what is not. for a carborator, it has a holly with number as follows:
air horn: 5269
side of carbs: 12R-5395B , 6R-4237R
metering plates: 7866-62103 front, 8522-6210 rear

can anyone tell me what this is?

thanks for any help

Vic

Holley carb not original on a 72 454 Vette.

Hey there Tom,

i realize that the carb that should be on it is a rotchester, only the lt 1 of that year had a holley from the factory. but what is kind of curious about this carb is, there are no sight plugs for adjusting the floats and where the adjustment nut/screw should be, there is a plug. what is that about and what cfm is this thing? any help would be greatful

thanks

Can't find that particular number listed. Does it look like this or is the choke horn perfectly rectangular ? It may be a spreadbore Holley made to bolt onto a Quadrajet intake. http://i248.photobucket.com/albums/gg163/nhbandit/spideraccessories_2030_135880038.gif

hey Mark, i am sure its a square flang, probly some older speed shop direct replacement for the quadrajet that should be on there but i have no idea the size of it. just find it funny that the float adjustments have been pluged and no sight cap on side. it does look similar to that but larger and no elec choke. by the way i see you are from NH, i grew up in Nashua. pretty crazy thanks Vic

sorry forgot to mention choke horns looks just like that. thanks Vic