My goal when we built my 5.7 was 500 hp to the WHEELS,500 hp to the crank is NOT hard to obtain again can you do it on $300 NO - HP cost money and trying to achieve it on the down low cheap basis will only cause problems,Now the question is for everyone is: supercharger?? Turbo??? spray???? or take the stroke and compression to the max and deal with race gas.My 392 5.7 was built for no power adder other a 100 shot of nos if i wanted which is NOTHING to throw at ANY engine if done PROPERLY.Ok so I get crap all the time because I choose to use a CARB = old school according to SOME here on this site.Carb's are NEVER going away in our hobbie and I choose that route again MY CHOICE.What did we achieve????? I've got 634hp at the flywheel and 518hp at the rear wheels with my cut-outs CLOSED!!!!!! In a properly built forged and stroked 5.7 small block with a carb. Was it cheap??? NO is it sweet??? Come to Wisconsin and take a ride and find out.Those are big block numbers that we have out of a small block,Again you can do the same thing with a R3 block and lot's of cash,I have less than $6000 in this motor including everything from pan to carb.--Hope this helps a little--Steve
On the 5.7 hemi You could put in a custom cam, performance heads and tune and get 400 wheel horsepower, I would contact a hemi specialist for a recommended cam . Inertia has quite of few and a couple to get the 400+ whp.
http://inertiamotorsports.com/camshafts.html
Once you get beyond that range of power its gonna cost some bucks, and if your talking turbocharging ,Lots of little things add up quick . Besides the turbo , a good wastegate and blow-off valve isnt cheap and custom headers and hot and cold side tubing (they really needs to be tig welded to keep slag out of the turbo), intercoolers etc. will get expensive real quick. I did a turbo project and was suprised how quick it all adds up.
