1970lynch
Well-Known Member
Hey everyone. It will be a lot of text as i want to give as much i fo as possible as i dont know which of it can be useful to give me an advice on my questions. First of all i am from russia keep in mind that we dont have proper v8 machine shop here, where you can leave an engine and have it totally complete in a few days))
So i bought stock 383 block with crankshaft, connecting rods and pistons. It is my first engine. Sent it for inspection to regular machine shop and they said it needs to be bored. So i decided to leave stock connecting rods and bought new pistons - kb400-30. I have sent it to the same machine shop so they can double check bore size. So they made all the works such as 0.30 over bore, deck surface cleaning, and they also press fitted the wrist pins into connecting rods on pistons and here is the first question that turned into a problem i guess.
Yesterday i have installed the spiral locks on all of the pistons and i realized that connecting rod is not in the middle of wrist pin on some pistons. So the first questions are:
1) As kb400-30 specified as press fit or floating, am i right that the wrist pin style depends on connecting rod and it was press fit on 383 from the factory?
2) What is the proper position of connecting rod small end on wrist pin in relation to the piston?
3) Last one but also the one that totally confused me: all of the assembling videos says that connecting rods big end have one side chamfered and another one is flat, flat goes rod to rod and chamfered goes to crankshaft. The problem is that mine are chamfered on both sides of big end!! Some have bigger chamfer some smaller but all of them are chamfered.
Thanks for the help in advance.
So i bought stock 383 block with crankshaft, connecting rods and pistons. It is my first engine. Sent it for inspection to regular machine shop and they said it needs to be bored. So i decided to leave stock connecting rods and bought new pistons - kb400-30. I have sent it to the same machine shop so they can double check bore size. So they made all the works such as 0.30 over bore, deck surface cleaning, and they also press fitted the wrist pins into connecting rods on pistons and here is the first question that turned into a problem i guess.
Yesterday i have installed the spiral locks on all of the pistons and i realized that connecting rod is not in the middle of wrist pin on some pistons. So the first questions are:
1) As kb400-30 specified as press fit or floating, am i right that the wrist pin style depends on connecting rod and it was press fit on 383 from the factory?
2) What is the proper position of connecting rod small end on wrist pin in relation to the piston?
3) Last one but also the one that totally confused me: all of the assembling videos says that connecting rods big end have one side chamfered and another one is flat, flat goes rod to rod and chamfered goes to crankshaft. The problem is that mine are chamfered on both sides of big end!! Some have bigger chamfer some smaller but all of them are chamfered.
Thanks for the help in advance.