Rochester Carb application by number

Steve Williams · 11-27-2013, 05:21 PM

Does anyone know of a website that has Rochester carb numbers (both 2 and 4 barrel) that show you which vehicles it may have come on from the factory? I have a bunch of cores and want to make notes to attach with each carb before they go into boxes for temporary storage. Where exactly do they measure for carb size? I have never seen this done before and was curious.

Alan Roehrich · 11-27-2013, 07:46 PM

Quote:

Originally Posted by Steve Williams

Does anyone know of a website that has Rochester carb numbers (both 2 and 4 barrel) that show you which vehicles it may have come on from the factory? I have a bunch of cores and want to make notes to attach with each carb before they go into boxes for temporary storage. Where exactly do they measure for carb size? I have never seen this done before and was curious.

try: www.newagemetal.com

Mark Yacavone · 11-27-2013, 08:18 PM

Quote:

Originally Posted by Steve Williams

. Where exactly do they measure for carb size? I have never seen this done before and was curious.

Steve, for tech purposes, they will turn the carb upside down , open the butterflies ,and take a dividers or similar tool, and go in and measure the venturi area at the smallest point,..and then measure the actual bore size for the throttle plates..
These are the two numbers you have to be concerned with.

Tim H · 11-27-2013, 08:33 PM

Quote:

Originally Posted by Alan Roehrich

try: www.newagemetal.com

Great link, to original Delco info !

Mike Semeniuk · 11-28-2013, 11:57 PM

Steve,

I have some information in good old paper format showing year and car with some jetting info. don't recall ths source, but believe it from the general.

I could scan it to you . Just PM me with a contact email and I'll send it this weekend if you wish

Steve Williams · 11-29-2013, 05:20 PM

Alan and Mark I really appreciate your replies. Mike, I sent you a PM with info. I have one carb in particular that I am having a hard time gathering any reliable info on. Conflicting info is what I have so far. I need to measure this one and compare it to what NHRA lists in the engine blueprint specs. The link below shows some info, for this particular carb, that I think is bogus. With some type of documentation that can be relied upon after measuring, I believe that I can use this carb for an engine that I am building. I plan on doing the carb myself and see if I can make it run or make it scrap. Time will tell.

Thanks again everybody

11-27-2013, 05:21 PM	#1
Steve Williams Member Join Date: Aug 2007 Location: Detroit, Michigan Posts: 352 Likes: 0 Liked 1 Time in 1 Post	Rochester Carb application by number Does anyone know of a website that has Rochester carb numbers (both 2 and 4 barrel) that show you which vehicles it may have come on from the factory? I have a bunch of cores and want to make notes to attach with each carb before they go into boxes for temporary storage. Where exactly do they measure for carb size? I have never seen this done before and was curious.

11-28-2013, 11:57 PM	#5
Mike Semeniuk Junior Member Join Date: Aug 2004 Location: Sherwood Park, Alberta Posts: 99 Likes: 19 Liked 6 Times in 2 Posts	Re: Rochester Carb application by number Steve, I have some information in good old paper format showing year and car with some jetting info. don't recall ths source, but believe it from the general. I could scan it to you . Just PM me with a contact email and I'll send it this weekend if you wish __________________ Mike Semeniuk 632 GTMA

11-29-2013, 05:20 PM	#6
Steve Williams Member Join Date: Aug 2007 Location: Detroit, Michigan Posts: 352 Likes: 0 Liked 1 Time in 1 Post	Re: Rochester Carb application by number Alan and Mark I really appreciate your replies. Mike, I sent you a PM with info. I have one carb in particular that I am having a hard time gathering any reliable info on. Conflicting info is what I have so far. I need to measure this one and compare it to what NHRA lists in the engine blueprint specs. The link below shows some info, for this particular carb, that I think is bogus. With some type of documentation that can be relied upon after measuring, I believe that I can use this carb for an engine that I am building. I plan on doing the carb myself and see if I can make it run or make it scrap. Time will tell. Thanks again everybody