just got my engine back. was a 350 (3970010), but now is a 383... has an eagle stroker kit. the problem is when i try to start it, the starter does not mesh close enough to the flexplate, it grinds and crunches, will start the engine about 3 times, then goes to only grinding, and no engine movement. the flywheel is from a 400. they tell me it is a standard 400 flywheel..... does that mean 153 or 168 teeth..... its about 10.5:1 compression, but not broken in yet, i have ran it an hour in the driveway, and drove it 20 miles(under 3000RPM). it is hard to turn the flywheel by hand. not sure if that is cuz the compression, new rings seating.... runs great, its not locked up, but is very hard to turn.... the starter is from the 350 that was in it before. its the one with the offset holes, not the straight across holes... the first time it started 3 times, and solenoid went bad. so i bought a new one. then it started 3 times, and chipped the ends of the teeth on the starter.... took the starter had it rebuilt, new gear.. works great. 3 times, then starts making the same noise. grinds and will not start the engine. so then i bought a new starter, take a guess... starts 3 times, then starts making the same noise. i have tried all kinds of shim configurations... with no shims is the best so far, and still not close enough. if i shim the outside hole, it kind of 'twists' the starter, possibly a fraction closer, started 1 time, then same thing again... i have been to auto parts stores everywhere... i have called summit racing... have asked many many ppl and nobody knows how to fix this. some say get a high torque starter (shop that built the engine says it shouldnt need one) some say could be the wrong flywheel. what gets me is... if it meshes good enough to start 3 times, then it should start every time. am i tearing the starter apart from the high compression???? the flywheel is in good condition, was looking for worn teeth. only 2 teeth (due to my trying to start when it wasnt lined up right) the starter teeth are in good shape now ( on the new one) but still will not turn the engine. if i take either starter out and test it, they work perfectly, bendix comes out, spins good and fast. possibly the gear mechenism in the starter gear is internally damaged...the one way bearing in there????? i dont want to go spend 300 on a high torque starter, and have it destroyed in one day. what can i do, its driving me krazy. almost tempted to take to the chevy dealer down the street. and i usually dont let people work on my car. prefer to do it myself. just stumped this time. somebody please help. i know im missing somthing simple probably.