I bought a S10 with a 383 a while back and it has a bad vibration at 3000 rpms. I thought it was the drive shaft or pinion angle at first but now I think it may have the wrong flex plate.
It actually broke the spot weld and vibrated the pick up tube out of the oil pump. I was lucky as it happened just as I was pulling into my cousin's driveway. He is an old school chevy mechanic and we pulled the engine out at his place, everything still looks good inside.
There is a 1 to 1 1/4 inch weight welded to the rear counter weight on the crankshaft. Is this weight supposed to be in the place of a weight on the flexplate?
How do I tell what flex plate to use with this crankshaft?
ETA- I have a one piece rear main seal block with the hydraulic roller cam. I'm running a 400 style balancer on the front and a weighted 350 flexplate on the rear. Does this sound right?
I can try to get pictures tomorrow if it will help.
It actually broke the spot weld and vibrated the pick up tube out of the oil pump. I was lucky as it happened just as I was pulling into my cousin's driveway. He is an old school chevy mechanic and we pulled the engine out at his place, everything still looks good inside.
There is a 1 to 1 1/4 inch weight welded to the rear counter weight on the crankshaft. Is this weight supposed to be in the place of a weight on the flexplate?
How do I tell what flex plate to use with this crankshaft?
ETA- I have a one piece rear main seal block with the hydraulic roller cam. I'm running a 400 style balancer on the front and a weighted 350 flexplate on the rear. Does this sound right?
I can try to get pictures tomorrow if it will help.