73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: Mike81K10 on June 25, 2024, 10:19:45 pm
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I have noticed a very limited Holley 750 carburetors with Electric Choke and Vacuum Secondaries. In fact, I think they only have one if that. Some I have seen and like are mechanical secondary. Was wondering how others feel about the mechanical secondaries. Kinda like the Holley Ultra Double Pumper Carburetors 0-76750RD. I do not think mechanical secondaries are as proficient on the highway.
PS: What is the cfm of the Rochester carburetors. Was wondering if they are equivalent to the 750.
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What do you have on there now? If you're sticking with carburetion, I'd look into a new Q-Jet https://www.summitracing.com/search/department/air-fuel-delivery/part-type/carburetors?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=quadrajet
If you want Holley https://www.holley.com/brands/sniper/products/fuel_systems/fuel_injection/sniper_efi/sniper_4-barrel_systems/
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What do you have on there now? If you're sticking with carburetion, I'd look into a new Q-Jet https://www.summitracing.com/search/department/air-fuel-delivery/part-type/carburetors?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=quadrajet
If you want Holley https://www.holley.com/brands/sniper/products/fuel_systems/fuel_injection/sniper_efi/sniper_4-barrel_systems/
I agree 100% with the Q-Jet advice. They are better carbs and more fuel efficient. they are just harder to hotrod because parts arent as available and a lot of people dont know about them because they all junk the quadrajunks because they are factory... they are excellent carbs.