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Old 11-25-2010, 09:51 AM
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I have to agree with tech.... especially how the details seem to get forgotten. And I did run a 114 deg alcohol cam back in the 70's.

I paged through Edelbrock's catalog on cams. A vast majority of the RPM cams are 112 deg. There are a few that are not. I suspect that they have more test mule motors laying around than many guys build in a life time. The RPM motors are about the max that you can live with day in and day out. In my own case I ran a single 4 Holley 750 vac at first until the blower was ready. It idled at 1000 rpm min and was really a bear in traffic on a hot day. I had the 3000 converter which was a must. It was all I could do to make the fine adjustments to keep the idle at 900-1000 in gear. It loped hard but I managed to fine tune the AFR at idle to keep it clean enough so I could sit for 10-20 minutes on a hot day in rush hour. It maintained about 10 in of vacuum in gear but that was about it.

Installing the blower made the car a dream to drive. The idle smoothed out and now is about 800 in gear with just a touch of roughness. Just enough to let the car next to you know there are serious horses under the hood. I can idle as long as necessary in traffic any day rain or shine. I made 14 laps around the fair grounds at Back To The 50's never stepped on the gas except to park. 45 min a lap.

Now I don't get paid by Edelbrock but I have to say that I think they have done their home work on their street stuff. They even simply add a blower to the 350 or 383 and instant 500+ hp. Not cheap of course but it is there and on a single 4 bl carb. They claim that they get 10-13 inches of vac (true)which I think is due to the little bit wider lobe sep cams.

I'm sure you make a lot more hp with other cams and better flowing heads but why?? When you are out in the country cruising on 2 lane roads isn't it more fun to just enjoy the ride, step on the gas once in a while for a sec or two and get back in line behind your cruise buddys?? It sure is nice to pull into the gass station, wait your turn and fill up with what ever comes out of the pump and not have to worry about it.

One last little tidbit...be sure to get a good AFR gage either permanent mount or hand held. Its an invaluable tuning device for blowers.
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