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Originally Posted by Nickv
I was thinking something like the Summit 2802 cam, maybe? Or a RAM IV style cam?
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Been here and done that, "041/RA4 cam in a low compression 400", bad choice horrible low rpm power/weak take off. As Cliff and others attest, to properly run a RA4 cam in a 400 it should have 11.0-1 compression, 3500+ converter, and rev the engine 6300-6400+. My car ran 13.60's @101 with the cam. I switched to a much smaller Crower cam and went 12.90's.
I really like the suggestions to running the hyd roller if you can justify the price. I'm not sure how to take advantgage of the improved head flow unless your willing to run a little more converter. You don't mention what converter, so I assumed stock, which limits the cam choices considerably. Looking at the weight of the car and mild 3.23 gear I suggest being carefull selecting cams above @0.050 .218-.220 MAX on the intake side with a stock converter. If your open to running a 2000-2500 converter then I'd go as far as .221-.225 MAX. Finding a cam netting a valve lift above .500 will help use the headflow too.
Take a look at the new Lunati "VooDoo" cams, there are some good looking numbers that might work well in your combo. JD
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Good luck to the new owner of the Ventura II! Sold the car after 13+ years. Look for it on the Hot Rod Power Tour in the future as it's currently being re-configured as a Pro-Touring ride!
