Hey Rustang, here are a few 393 recipes to throw into the mix
400HP (FORD CRATE-ISH)
http://www.cobralads.com/dyno2000/rustang1.gif
HEADS ........Edelbrock Performer RPM
CAM...........Comp 12-246-3 aka XE274H
MANIFOLD......EdelbrockRPM or RPM Gap
CARB..........750 Holley Avenger
http://www.edelbrock.com/automotive/headford.html
http://www.compcams.com/information/...umber=12-246-3
http://www.edelbrock.com/automotive/man_ford_351w.html
http://www.holley.com/HiOctn/ProdLin...C/0-80670.html
500HP (HOT STREET)
http://www.cobralads.com/dyno2000/rustang2.gif
HEADS........AFR 185
CAM..........Crane 448031
MANIFOLD.....Edelbrock Victor Jr
CARB.........750 Holley Mechanical
http://www.airflowresearch.com/pages/185sbf_strp.htm
http://dab7.cranecams.com/SpecCard/D....asp?PN=448031
http://www.edelbrock.com/automotive/man_ford_351w.html
http://www.holley.com/HiOctn/ProdLin...0-80528-1.html
600HP (RADICAL STREET)
http://www.cobralads.com/dyno2000/rustang3.gif
HEADS........Edelbrock NEW VictorJr CNC
CAM..........Crane 448841
MANIFOLD.....Edelbrock SuperVictor
CARB.........950 Holley
http://www.edelbrock.com/automotive/raceheadford.html
http://dab7.cranecams.com/SpecCard/D....asp?PN=448841
http://www.edelbrock.com/automotive/man_ford_351w.html
http://www.holley.com/HiOctn/ProdLin...0-80496-1.html
550HP (CHILI PEPPER STREET)
http://www.cobralads.com/dyno2000/rustang4.gif
HEADS......Windosr Sr ported By TEA
CAM Comp...35-522-8 aka XE282HR
MANIFOLD...Edelbrock Victor Jr
CARB.......Holley 830 nascar
http://www.fordmuscle.com/archives/2...ow/index.shtml
http://www.compcams.com/information/...umber=35-522-8
http://www.edelbrock.com/automotive/man_ford_351w.html
http://www.holley.com/HiOctn/ProdLin...C/0-80785.html
Just some opinions to follow...take them with a bag of salt
Manifold
I would go with the dual plane RPM manifold with World Sr Lites, GT40, or AFR 165 heads. I would go up to the single plane VicJr with AFR185, VicJr heads, TEA ported World Srs, or AFR 185s.
Carb
vacuum vs mechanical
On a light over-powered cobras with a stick shift, I'd go mechanical secondaries
Carb
religious war edelbrock vs holley vs demon
I have a holley, but my next carb will be a demon. I have seen the dyno live in action, and although the carbs might make identical peak HP, the demon's makes a wider TQ curve. The dyno guys state the same thing and they said they have seen it 100 times. The shape of the bowl on Demons seems to flow the air more efficiently.
http://www.bgfuel.com/demoncarbs/demon_charts.htm
I think all the components you are looking at are great pieces and good mathces. To build an engine from your exact items above, I would go
CAM Comp Comp 12-246-3
HEADS AFR185
Edelbrock RPM Air Gap
Holley 750
I would then try to convince you
to go up from the air gap to the vic jr if you had the hood clearance, and I would try to talk you into the Speed Demon 750
Here are a couple 393 articles for your research
http://www.westechperformance.com/pa...s/75hpmag.html
http://www.trickflow.com/articles/st..._st_2_body.htm
http://www.trickflow.com/articles/st..._st_5_body.htm
hope this stuff was fun
Andy