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Old 07-20-2007, 12:10 PM
blykins blykins is offline
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The engine should be started and if the cam isn't a roller cam, it should be broken in for the specified time period. The engine will then need to be ran with a small load on it for some time and then shut off. A couple of 30 minute runs then 30 minute rests to heat cycle the engine is ideal.

After some warmup runs, then they should make pulls on it with a full load. At that time, timing should be played with, jets, idle air bleeds, distributor stop bushings/springs, vacuum secondary springs, etc. should be tested and swapped if necessary.

I had my 428 dyno'd at Performance Engineering in Cinci, OH. They made around 12 pulls and kept pulling more horsepower out of the engine each time. We stayed until around 6:30 that evening and were tweaking the whole time.

I would take the air cleaner that you're going to use and the headers as well. That way when you get it in the car, you'll only have to make minor adjustments on the carb.
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