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Hello Keith,
I am running a slightly different engine, Windsor block and 2V Cleveland heads. My experience has been that a 750 Holley was too much carb for the engine. It ran very well at full throttle but was kind of sloppy driving around town and the plugs were always wet. I went to a 650 Holley and the car has run much better since. I agree with the idea of running the exhaust port plates as well as the intakes. The 4V runners are huge and you have to do something to get fuel/air velocity up. There are a number of guys on this forum that are using port plates and speak highly of them. My 2V heads are also open chamber with 10:1 dome pistons and the machine shop calculated the compression ratio at 9.46:1. On reading your post the first thought I was the cam was pretty small. I had a similar cam in mine, 204/216, I/E @0.05 and a lift of .456/.484. Lift is actually a bit higher since I am using 1.73:1 rockers. The car ran OK but I thought it should have been making more power. The funny thing is my Dyno2000 predicts 406 hp. I found one cylinder was not making power and I am rebuilding the engine now. The heads have been gone over pretty thoroughly including adding the big 4V valves. In addition I am putting in a much larger cam, 236/246, I/E @ 0.05 and lift of .520/.538. The computer predicts 479 hp @ 6500. The engine should be back in the car in about 2 weeks and I can't wait to see how it runs.
Jack Z.
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