I have a 4.8 sittin at the house and am considering doing a 383 stroker. Has anyone ever done this? I know how to do it, just curious if anyone has ever actually done it.

 

sure they make torque because of the stroke but the cost gets up there because the block has to be bored .120" which shops charge extra for.
Most boring bars can only cut 30 per pass so it takes considerably longer.
A much more cost effective way is to go .065" over on a LQ engine and be happy with 376 inches. Use a desktop dyno program if you have access to one. It will show that the 376 is just a more efficient bore/stroke combo and will make more average horsepower and torque through out the power band despite being smaller to the 383 by 7 cubes.
IMO I'd just put a 70mm turbo on that 4.8 and settle for 600 ponies....

 

Yes, it's been done with both iron and aluminum blocks.

 

For the money the turbo 4.8l is the way to go or shove your crank into a. 6.0 block turbo it and have a monster

 

Sure you can do it! We have stroker rotating assemblies in stock & ready to roll! We can even short-block one for you.

If your going to buy a gm crank your way over half way to buying a good forged crankshaft. In my mind the extra cubes is easy upgrade while your there!