Tuning a road demon 625 cfm carb

[Brian Safford <hzf9vv@xxxxxxxxx>]

Am re-posting as I did this first from my cell phone and am not sure
it posted properly ...

I talked to a tech at Barry Grant about tuning my 625 cfm road demon
on my poly 318. I get black smoke whenever I floor it. He asked me
three things - timing at idle, vacuum at idle and cam duration at .050

Timing is 12 degrees btdc,  vacuum was around 14 and my Daytona cam
has 218 at 50.

He suggested I switch to a 4-hole spacer rather than the open one I'm
currently using, and also thought I should move the timing to 14 or
15. He also wondered if I had good hot spark. Not sure how to check
that.

I asked about the power valve and he said it probably isn't even
opening as the vacuum would have to drop below 6.5 for that to happen.

I have power steering that uses vacuum as well as a pcv valve - do
those use up too much of the available vacuum?

I don't want to risk damaging my engine - are any of his suggestions
potential problems?

Thanks as always,
Brian Safford
62 Dart / Poly 318


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