Dual quads versus big hammer!!!...

j par said

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Possibly now that I have the idol and Cruise under control like you're saying I may just try the next spring up which would be the factory green spring...
The top chart is the Edelbrock and the bottom chart is the street demons for the springs. The green comes in the Street Demon Factory.
I'd have another day off tomorrow as my customer just got back from traveling and we agreed under the conditions that's going on that will just put it off till next week so I have more time for test and tune tomorrow... I got to get cracking cooking dinner..

Click to expand...

The chart helps. You need to get a vacuum gauge on there and look and see what you have for cruise vacuum. Set your springs based on that.

I had to pull out my old Carter carb book and refresh my memory. If the stiffest (quickest opening) spring you can get opens at 8 inches, you may have to use some thin washers and shim it up a bit. I'm thinking you'll be 16-18 inches of cruise vacuum...maybe a bit less because I just remembered you took some gear out...so if you can be at 10 inches or so when the spring pulls the metering rods out of the jet, you will most likely clean up the lean spot.

Back to reading. I had forgotten a bunch about these carbs. Makes me want to correctly modify a Strip Dominator and do a TQ for my junk.