Speed Demon jetting
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Lead Driver
Joined: Nov 2000
Posts: 6,639
Likes: 349
From: Albuquerque
Speed Demon jetting
I thought I posted before but some other demon musta swallowed it up. I'm replacing a 750 vac. sec. Holley with the same in a speed demon and want to start out with jetting that is pretty close. The Demon has 5 sizes larger jets in than the Holley and I hate to run rich with a new engine. Any experience out there?
1977 Ford F-100
280,000 miles
Stock on the outside
modified/rebuilt everything
1977 Ford F-100
280,000 miles
Stock on the outside
modified/rebuilt everything
Senior User
Joined: Oct 2000
Posts: 227
Likes: 0
From: arkansas
Speed Demon jetting
call the people at demon carburetion and tell them what you have. 99 percent of the time, they get the jetting really close to perfect. the other 1 percent of the time it is perfect!! these guys know what they're doing. If your engine runs a little rich, don't worry, it won't cause any bad problems
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