holley identification?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shelby987 · 12-18-2005, 09:24 AM

I came across a carb, and I think it might be an 'economaster' but I am not sure. The seller gives the following information "there is a #487 on the butter-fly, Other #s are 6R-5643B 1-8149-1 0220"
I think a 450 economaster would work nicely with my L6, and not bog down the engine like it does on some of the larger displacement engines it was previously run on, but I am not sure what this carb is. I have attached a pic below.

leadfoot067 · 12-18-2005, 02:17 PM

yep holley economaster...q-jet replacement carb...works great on a stock or close to stock engine....i dont think they make them anymore,may have trouble findin parts

shelby987 · 12-18-2005, 02:33 PM

excellent point, can anyone point me in the right direction for getting a rebuild kit? Would like to replace as much as possible, gaskets, secondary springs, jets, and anything else I may have over looked (will be my first rebuild/tuning of a carb).
Where is a good place to go to get advice on such a project?

Nelson · 12-18-2005, 09:57 PM

I'll running one of those carbs now on my 350. It came with the Truck, and still used the crossover choke ! It was also my first carb rebuild, and yes I was successful. Just take your time when rebuilding, and if you have a digital camera, use it to take a few pics. This will help you later on with linkages and more. The rebuild was easy. I bought my rebuild kit from the local speed shop. It's a genuine Holley renew kit for the 4360 Carb. P/N 37-1540. Hope this helps.

shelby987 · 12-19-2005, 08:52 AM

where does the 7455 or 7456 numbers that I typically see associated with the 'economaster' cars come into play? And what is the difference between the two (or possibly with the one above, three)??
Thanks!

Nelson · 12-19-2005, 10:17 PM

Try Holley Tech support on the net. There pretty good.

12-18-2005, 09:24 AM	#1
shelby987 Registered User Join Date: Mar 2005 Location: Just outside Durham, NC Posts: 894	holley identification?? I came across a carb, and I think it might be an 'economaster' but I am not sure. The seller gives the following information "there is a #487 on the butter-fly, Other #s are 6R-5643B 1-8149-1 0220" I think a 450 economaster would work nicely with my L6, and not bog down the engine like it does on some of the larger displacement engines it was previously run on, but I am not sure what this carb is. I have attached a pic below. Attached Images __________________ 1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM!

12-18-2005, 02:17 PM	#2
leadfoot067 horsepower junkie Join Date: Aug 2003 Location: graham, washington Posts: 326	Re: holley identification?? yep holley economaster...q-jet replacement carb...works great on a stock or close to stock engine....i dont think they make them anymore,may have trouble findin parts __________________ 67 short wide box,350/700r4/3.73posi 71 olds cutlass "S" mom bought new..12.30s@113MPH

12-18-2005, 02:33 PM	#3
shelby987 Registered User Join Date: Mar 2005 Location: Just outside Durham, NC Posts: 894	Re: holley identification?? excellent point, can anyone point me in the right direction for getting a rebuild kit? Would like to replace as much as possible, gaskets, secondary springs, jets, and anything else I may have over looked (will be my first rebuild/tuning of a carb). Where is a good place to go to get advice on such a project? __________________ 1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM!

12-19-2005, 08:52 AM	#5
shelby987 Registered User Join Date: Mar 2005 Location: Just outside Durham, NC Posts: 894	Re: holley identification?? where does the 7455 or 7456 numbers that I typically see associated with the 'economaster' cars come into play? And what is the difference between the two (or possibly with the one above, three)?? Thanks! __________________ 1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM!

12-19-2005, 10:17 PM	#6
Nelson Registered User Join Date: Jun 2001 Location: cambridge,ont,canada Posts: 128	Re: holley identification?? Try Holley Tech support on the net. There pretty good. __________________ Nelson 1970 C10 350 Auto. A/C not Working

12-18-2005, 09:57 PM	#4
Nelson Registered User Join Date: Jun 2001 Location: cambridge,ont,canada Posts: 128	Re: holley identification?? I'll running one of those carbs now on my 350. It came with the Truck, and still used the crossover choke ! It was also my first carb rebuild, and yes I was successful. Just take your time when rebuilding, and if you have a digital camera, use it to take a few pics. This will help you later on with linkages and more. The rebuild was easy. I bought my rebuild kit from the local speed shop. It's a genuine Holley renew kit for the 4360 Carb. P/N 37-1540. Hope this helps. __________________ Nelson 1970 C10 350 Auto. A/C not Working Last edited by Nelson; 12-18-2005 at 10:00 PM.



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