Not Ranked
Well the up date is that I got to talk to Don Gould at FBO Systems today on the phone. Good news to catch him in the office and not out at a race track on his cell phone.
I did ask about my questions concerning the jets BG plublished for the 302 Crate. Typo error
The bad news is that my new 650 Demon I received today has both the vacuum connections broken off during shipping. No problem with the claim, just an unfortunite delay. I was hoping that if I needed more tech help, I would take Don up on his offer to meet him with my the car at Maple Grove Dragway in a couple of weeks.
During our conversation a few interesting things did surface. He told me that it is not unusual to have as many as four different jets sizes in a carb. I know I have always changed them in pairs.
Also raising the float level on the primeries may help some stumble conditions. He recommended 2/3 to 3/4 level from the start. Some things I never knew.
Lynn,
Just about condition you mentioned I have with a few exceptions. My intake vacuum is 14-15" and idle screws did allow adjusting the idle mixture. The stumble is unbelievable. Indle fumes burn your eyes out of their sockets, etc. I have done everything anyone has suggested to try and retify the problem, just short of drilling the rear throttle plates. Very fusrtating to say the least. I finally just decided to swith to the Demon in hopes of retifing at least some of the problems. Tuning is easier and most can be done with the carb on the intake. We'll see?
CJ428CJ,
I have adjusted the rear idle screw on the holley more times than I really want to admit. I was at the point of going broke buying carb gaskets. Demon sure is nice with the rear idle screw.
I do regret that I did not do a little more research on Ford Crate Engines before making my decision. The B303 cam appears to be a poor choice for a carburated engine, due to it's large overlap.
Thanks to all and I will post the results when we get the Demon installed. Lets hope it's positive.
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