ok, about ten days ago i bought a hotrod 89, Z28. my dog has been sick and i haven't been able to work on it but this eve i added some fresh premium, cleaned the plugs, charged the battery, added some power steering fluid, filled the tires, fixed the gas leak and fired it up. the lifters need adjustment but that's no big deal.... so i took it for a slightly illegal spin around the block to see what it would do. it's missing a little so i floored it and it bogged and then it took off. it burned the tires for about 70'. i think it has a posi rear because it bit well with both tires. i did it again just to make sure that it wasn't a fluke and sure enough, the thing really moves and sounds great. it tachs up fast too.... i'll upload a video soon. so here's my question; the car pulls so strong that i'm wondering if it's a 383 stroker. how do i determine if this 350 has a 400 crank?