[Sparks67]

If your goal is a supercharged engine, then you might look at the LSA. Ebay has a few LSA pullouts. Cost is a little more than the LS3 525 hp, but you have more upgrade options with the LSA engine than an LS3. For example the LSA has built in oil squirters for the pistons. If you plan in the future to upgrade the LS3 for a supercharger, then you have to buy a bare block then have it machined for the squirters.

If your goal is LS3 crate engine, and you plan to keep it NA. Then you should be fine.

Just make sure your car is structurally sound, because all the first gens have hidden issues. Factory subframe mounts are typically rusted out. Easy fix, but you still have to drop the subframe to fix it.

Jeff


PS.

I have owned 2 383's sbc but I upgraded to LS3 418 with LS9 supercharger. 841 hp and 816 ft/lbs torque at only 10.9 lbs boost, but if I wanted more power then I could go to 15 Lbs boost. I can run pump gas and I have more horsepower and torque than my full roller 383.