Before you start looking at cams, familiarize yourself with Dynamic Compression Ratio (DCR). It's the reason that you see a static compression recommendation in the cam description. There is a calculator at the end of the article that I highly recommend you download. I keep it on my computers.
http://www.empirenet.com/pkelley2/DynamicCR.html
You will need at least 9.5:1 static compression to get the best out of any of the cams you mentioned. I can tell you that you will not be anywhere near where you need to be with the 71 heads unless you mill them a lot. Most pistons sit below the deck, further lowering the compression.
The Hemi Killer cam is a single pattern cam, same duration intake and exhaust. You need ported heads to work with that cam, ESPECIALLY if you intend to use exhaust manifolds. What you need is a cam that has at least 10* more exhaust duration than intake duration. If you can't get your compression up, you need to stay smaller on the cam. If you don't, you'll end up with an engine that sounds good, but will be a pig on the street.
Larry
1970 GS455 Stage1 Race weight 4025 lbs.
TSP 470, 602 HP, 589 TQ
MT headers, Gear Vendors Overdrive
Best E.T. 11.54 Best MPH, 116.06
1998 Riviera SC3800
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