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Old 07-17-2020, 01:56 PM
Moriarty Moriarty is offline
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Join Date: Jun 2018
Location: Seattle, WA
Cobra Make, Engine: ERA 427sc
Posts: 98
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Quote:
Use the secondary speed screw for idle speed.
Do not drill holes, no need for that old trick.
Ah, good call. Now, I just need a trick for adjusting the secondary screw while on the vehicle - it's only accessible from the bottom of the base plate. I think I'll start by just eyeballing the difference with how much I lower the primary to get it back to square.

Re: vacuum - yeah, I'm hoping to get it up to around 8-10, so I'll focus on that before touching the power valve.

Thanks!

UPDATE: The mechanical linkage between the primary and secondaries prevents adjusting the secondaries to expose the transfer slot at idle, so that kills that option. I played around a bit this afternoon and have things working a little more to my liking now: bouncing between 7-8". This cam wants lots of idle advance - I get ~10"Hg @ 25 degrees. I've been looking into programmable igition solutions, so that might be doable, but wanted to make sure I got the carb in good shape first before messing with that.

Last edited by Moriarty; 07-17-2020 at 09:23 PM..
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