When considering everything for a rebuild, what do you look at first.......Heads and cam set up w/ your cc size or the rotating assembly w/ the dish of the piston and block decked to come up with your desired compression ratio. I know many other things come into play, like street car or race car, etc, etc. I am collecting parts and Im kind of confused on the most logical way to go about this. Right now I have a forged Lunati 3.75 crank that I bought on a pretty good deal and Lunati voodoo 1.65 rr that I also bought on a deal. I got both of these brand new from someone who gave up on their project. Also I have a 52mm tb, and Lucas 42lb injectors. I just need some imput as this will be happening later this year.
BTW, I am using my car as street mostly with maybe a handful of track runs per year. Not dd, but sometimes to work and on nice weekends. It will keep the 6speed. I have 3.73 gears already and I have lots of suspension parts also, more than whats in my sig now. I know Im going to use stock heads and intake ported by AI, I like the 200cc option. Also for this 383 I have planned Im thinking 11.5 to 1 compression is where I'd like to be. Thanks for any imput and help!!

 

Well, you start with your horsepower target. If you're married to the parts you have, the injectors are going to be good for about 550 flywheel horsepower...a a mild duty cycle of 80%

To get to 11.5:1 compression ratio with a 383 you'll need dished pistons. Flat top pistons will get you around 12.5:1. With the aluminum heads, reverse cooling and good tuning you can run pump gas at this a 12.5 compression ratio.

I'd probably go with 12.5:1 compression (flat top pistons on good rods) and aftermaket aftermarket AFR heads (you can only get so much out of ported stockers) and a good custom cam. and reuse the parts you already have.

 

will the afr's or trick flows do it out of the box? 12.5 to 1 seems like alot but I know from research you can do it. I just wonder about tuning also. I know I can have a mail order to get me started but is the dyno going to be a necesity for drivability issues. I just dont know who tunes obd1 close to me here in Beckley, WV. I can truly say Im not sure about power goals, I just want it to haul a** and be alot of fun. But at the same time I want it to be a car I can drive down the road. I had a 100 shot on the car already w/ what it has done to it now, Id like that kind of power anytime I hit the gas.