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Author Topic:   Holley help
Dirt Freak

Total posts: 429
posted February 10, 2005 08:00 AM  
This year we have option of running a holley 1850 or quadrajet. Not at all filmilar with the 1850 is it a better trade off than the qjets. 355, flat top with double hump heads, headers, big cam

Dirt Maniac

Total posts: 148
posted February 10, 2005 11:20 AM  
Once KP lugnut gets here he'll tell ya straight.
I use a quadrajet on my car, I run against holleys and demons....i don't think my 50 buck carb is giving up anything to those 1000 buck pieces.
I got the Rochester Carburetor book and sat up one night "Reading " the performance section to my carburetor as a bedtime story. It helped.
Like any other carburetor, study it, learn it and you can get it working.
Am I right KP?

Some People Race For A Living; I Live To Race

Dirt Forum Champ
Total posts: 1019
posted February 10, 2005 01:21 PM  
Yep, you are right. Although the quadrajet will potentially breathe more than the slightly smaller 1850, the motor isn't going to use every bit of the 750cfm that the standard quad is rated at. The secondaries will only open as much as the engine is demanding.
The same goes, ultimately, for the 1850 vacuum secondary carb, but the 1850 Holley is far more user friendly and easier to maintain and tune for the average racer.
Both can be winning carbs, it is just a matter of how ya design the entire package.
And IMO, anyone paying $1000 for a carb of either of these "flavors" has fallen victim to a very big sales pitch....



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