DZ carb rebuild - Team Camaro Tech
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post #1 of 6 (permalink) Old Jul 16th, 03, 04:42 AM Thread Starter
 
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I was wondering if anyone could give me some insight on where to start at for jet sizes and power valve sizes for a stock dz motor with the stock carb.I'm rebuilding a carb I bought off from someone else and it was not in the best condition someone had robbed the jets and power valves out of it.
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post #2 of 6 (permalink) Old Jul 16th, 03, 07:32 AM
DjD
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This will get you going...

http://www.holley.com/HiOctn/ProdLine/CarbList.pdf


If you need help with the rebuild use the search engine and search on "holley" in the performance forum as well as this one. The last few months have been full of threads with some good info in them..

...Dennis

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post #3 of 6 (permalink) Old Jul 19th, 03, 06:39 PM
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The last one I rebuilt had the following set up. .031 accel nozzle, 72 primary jets, 76 secondary jets, 6.5" power valves, white accel pump cam using the number one screw setting. I can't tell you how it worked, other than it ran fine for what I used it for, breaking in a new motor. The unloaded throttle response was instantaneous on a +/030 327. The only problem was the 6.5 power valve was too high a value for the camshaft and cross ram I used (very low vacum at idle) so the valve was usually open at idle causing an overly rich condition. On a DZ motor with the 30/30 cam and single Holley intake it would probably work fine.

John Z can probably tell you how they were set up from the factory.

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post #4 of 6 (permalink) Old Jul 20th, 03, 11:49 AM
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4053's came jetted 68/76 with #65 power valves; mine runs better jetted 72/76 (Jerry MacNeish setup). Truth be told, the 4053 is WAY too much carb for a 302, and mine ran MUCH better with a 600 Holley #0-80145 while Jerry was restoring my 4053.


[img]graemlins/beers.gif[/img]

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post #5 of 6 (permalink) Old Jul 21st, 03, 11:54 AM
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john, nice looking 302! where did you get your valve covers done at? or what did you do to them to get them to look that way? george
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post #6 of 6 (permalink) Old Jul 22nd, 03, 02:32 PM
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Had the original intake and valve covers re-skinned by Jerry MacNeish (www.z28camaro.com); he also did my alternator, distributor, carb, brake booster, and exhaust manifolds. [img]graemlins/thumbsup.gif[/img]

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