As of right now, I've got a virtually bone stock LB9/auto IROC-Z.

I have done some research and while the LT1/LS1 swaps do ultimately give large amounts of power, I still want to go a little different.

Once its all done, I want to have a mildly built 383 w/ one of the "ram" setups (not sure 100% which one yet), some sort of forced induction (ie. supercharger) and possibly a T-56.

For now, I'd like to at least get a motor going with a "ram".

I haven't checked locally but what have most of you paid for your 383 build-ups? Any problems with them? What kind of HP are you making and what kind of fuel setups are you using?

To those with the "ram" setups, which would be best for a 383? Which one is easiest to install and ultimately, maintain?

To those with S/Cs, which ones would you recommend? How much do they cost? What rpms is each designed for?

Here's for the broad question... As stated before, I plan to someday have a S/C'd 383 with a "ram" intake/injection on it. Any ideas on what kind of power could be expected from such a setup? I want to build something that people in my area will be in awe of...

Thanks in advance.

 

well I'd say strting reading up on your books. I've gone through a few books that take me up to the LT1. I've seen and read bits and pieces about the LS1. I am actually in the process of building a 350 LT1 for my camaro and I'll post how it comes out. Wish I had a digital camera though. Oh well, I've got most of the engine parts, but needs some sensors, computer, 4L60-E tranny, and a few other minor things.

If you want to make a 383 you can't do it with an LS1 because they use different bore and stroke sizes to make it actually inbetween a 350 and 383 as far as stroke is concerned. Correct me if I am wrong, but a 383 is better for higher torque and a lower RPM range because of the longer stroke. You should either get RAM air induction or a Supercharger (a turbo would give you more power though because it runs off the exhaust instead of a pully), not both because there is no need. RAM air is a naturally aspired induction and Supercharging/turbocharging is forced induction.

Also, from what I found out, it's better to build a 350 just because if you still really don't know that much about the dynamics of the engine, you'll be losing money and power because of an inexperienced build. The 383 has like 8% more volume because of the longer stroke and seeing how the intake valves aren't any larger, there would just be a bottleneck there and on the compression stroke, instead of getting like 10.5/1 compression, you would get about ~9/1 depending on your setup and that means altogether you lose power. With just a good port and cam you could make up for that, but you have to read up on it because nobody at compcams or cranecams can really tell you what teh best one to get for your situation will be and you will end up with a low powered one because they don't want you to be upset because it's too wild and your idle is sporatic. Also for forced induction, you would need a different cam than a naturally aspired one and if the heads are ported you still have to get a different cam and same with tubular exhaust. So go check online for some books on Small block chevy's and some power books by David Vizard. It's about the only thing you can do short of actaully going to an automotive school or taking a class for it.

 

The LS1 can go up to 427 on the same block. 427 and 383 LS1 engines are common in the C5 corvette crowd. The 383 is achieved by changing the rotating mass and boring. The 427 requires different inserts.

Here are a few extreme examples:

http://www.lingenfelter.com/pac383cidls1f.asp
http://www.lingenfelter.com/pac427cidls1f.asp

There are plenty of ways to do this for less.