Well here's the plan; I've got a stock Lt1 cam for emissions and an experimental RMT (if I've got time) and I want something to swap in that'll have a noticable lope at idle and get me my best ET. As it stands, the 2800 stall converter should be plenty for anything with less than 240*@0.050 and since I'm going with the roller cam I probably won't need that much duration to let the engine breath. I'm looking for a cam with a very aggressive ramp rate. With the beehive springs I shouldn't have to worry about wearing or the float... so maybe I should look into a custom.
Since these vortec heads ARE still based on the sbc there is no way I'm going to run a single pattern cam. Dual pattern is a must because these exhaust ports are pathetic. From running some iterations with desktop dyno 2003 it looks like a high ramp ratio with a 274/288 adv. 114 ls and .540/.540 lift would work out perfect with untouched heads. I can't find a cam with that large of a split on the duration. Most are like 4-8 split where as I need 14-20...

. I think I'm going to go custom since with ported heads desktop dyno is telling me 264/284 on a 112.5 ls. That's with the aggressive ramp rate. If somebody knows of a cam with similar specs please let me know. Oh, and I'm going for low lift, .510 max seeing as these are 23 degree heads. What's more important isn't the lift height, but how much lift is under the curve (ramp rate).
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, Jon
Owner of a Red Sled.
If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s)
\"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue