difference between carbs??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ocbaud · 03-22-2004, 02:58 PM

whats the difference between the following carbs? besides the electric choke and finish?:

Designed for 65-69 4-bbl V8 applications, this Holley vacuum secondary carb flows 750 cfm. Includes automatic electric choke, dual feed fuel bowls. Sweet new bright zinc finish.

750 cfm vacuum secondary carburetor with manual choke, dual-feed/center-hung float bowls, power valve blow-out protection and all-metal parts. Universally calibrated. Available in classic gold or bright zinc finish.

toytruck · 03-22-2004, 03:09 PM

Nothing.

bigblock73 · 03-22-2004, 03:20 PM

One is a manual choke while the other is electric.

ocbaud · 03-22-2004, 03:42 PM

Quote:

Originally posted by bigblock73
One is a manual choke while the other is electric.

besides that!

bigblock73 · 03-22-2004, 03:49 PM

The 3310 is your typical classic 750, the other is a newer model I believe. Why don't you visit Holleys site to learn more, and maybe even contact them if you don't find what you want to hear.

ocbaud · 03-22-2004, 04:23 PM

just wondering why it stated it was made for a certain year model

bigblock73 · 03-22-2004, 04:30 PM

my guess is emmissions?

ElGracho · 03-22-2004, 05:44 PM

The 80508 has a ford kickdown linkage too. It would still work on a Chev just fine. They list the years because that was it's original application.

The 80508 gives you the electric choke (a $40 part) for $18. That's a good deal in my book. Take a look at the Holley site for the stock jetting on both carbs. You will probably need to lean out either of these carbs a little for your 350.

ocbaud · 03-22-2004, 06:39 PM

how much would i need to lean them out? what would the jet size need to be for me?

03-22-2004, 02:58 PM	#1
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	difference between carbs??? whats the difference between the following carbs? besides the electric choke and finish?: Designed for 65-69 4-bbl V8 applications, this Holley vacuum secondary carb flows 750 cfm. Includes automatic electric choke, dual feed fuel bowls. Sweet new bright zinc finish. 750 cfm vacuum secondary carburetor with manual choke, dual-feed/center-hung float bowls, power valve blow-out protection and all-metal parts. Universally calibrated. Available in classic gold or bright zinc finish.

03-22-2004, 03:09 PM	#2
toytruck 5-7 dropped 87 CC Dually Join Date: Sep 2003 Location: bay city mi Posts: 326	Nothing. __________________ I rather be in my 77 Sanger Picklefork Jet Hydro!

03-22-2004, 03:20 PM	#3
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	One is a manual choke while the other is electric. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

03-22-2004, 03:49 PM	#5
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	The 3310 is your typical classic 750, the other is a newer model I believe. Why don't you visit Holleys site to learn more, and maybe even contact them if you don't find what you want to hear. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

03-22-2004, 04:30 PM	#7
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	my guess is emmissions? __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

03-22-2004, 04:23 PM	#6
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	just wondering why it stated it was made for a certain year model

03-22-2004, 05:44 PM	#8
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,550	The 80508 has a ford kickdown linkage too. It would still work on a Chev just fine. They list the years because that was it's original application. The 80508 gives you the electric choke (a $40 part) for $18. That's a good deal in my book. Take a look at the Holley site for the stock jetting on both carbs. You will probably need to lean out either of these carbs a little for your 350. __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

03-22-2004, 06:39 PM	#9
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	how much would i need to lean them out? what would the jet size need to be for me?



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