Dual Carb tunning [Archive]

396_WAYS_TO_SPIT

11-14-2002, 06:03 PM

I am thinking on running 2 500cfm holleys on my 455 olds. I just want to know where to start on tuning. How many turn should I start with? I am still learning carbs so please bear with me. Thanks Michael :confused: :confused:

GofastRacer

11-14-2002, 06:46 PM

Just do as you would with a single carb and make sure that both are equal, same adjustments for both!!.. wink

squirtboat

11-14-2002, 07:10 PM

what about using a set of vaccum gauges?

GofastRacer

11-14-2002, 07:35 PM

I guess that'l work, I just adjust equally!!... :)

squirtboat

11-14-2002, 08:04 PM

When I ran mini sprints with crochrocket motors thats how we set all the carbs to match.

GofastRacer

11-14-2002, 08:52 PM

Yeah, with those that's about the only way to set them up!.. eek!

Hotcrusader76

11-14-2002, 09:43 PM

Are these vacuum secondary carburetors? If so you might want to connect the two vacuum canisters together so that your secondaries open at the same rate.
You can do this by simply drilling and tapping the top covers with 03AN fittings and connected them with some braided line.
Otherwise you should be fine with a simple mechanical set-up. I assume you are running these inline?
If you need any further help give me a call.
~Ty