Thought I would share recent experience re: the Holley 390 vs. Edelbrock
discussion. I have recently completed a built 4.6 for my TR8(high
compression, Woody cam, big valve worked heads, light flywheel,
balanced, Huffaker headers, edelbrock performer, Mallory unilite).
Cranked the new motor on the 390 as I had experience with it and knew it
was functional. After rejetting it ran reasonably well but my sense was
that the engine did not have the punch that I had expected. Just
completed swapping an Edelbrock 600cfm. The new motor came alive, now
runs like expected. Would run right straight up a pole if asked to.
Interesting that it required no recalibration. It idles well, pulls
well from low revs, is smooth at part throttle, and storms when
punched. John
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