Crank and rod help please

[tguss]

I picked up a 85 360 tore it down and notice 6 rods had 2899496 pressed pin and 2rods cylinder 3and5 had 3418645 pressed pins also is this right or have someone been in this block ? Crank number 20277169 , block number 4179930-360-2 , could some one help me , the 6 rods showing they are 340 rods I'm lost , would it hurt any thing with mixed match rods numbers ?

 

[tguss]

Motor was in 1 ton truck , four barrel motor, is this motor suspose to have these rods in it or was 2 been replaced ?

 

[Mrmopartech]

The 2899496 rod is a 68-73 rod,the 3418645 is a 76-87 318 rod,both having the same center to center length.As long as they weight the same,they is not a balancing issue.The 2899486 rod is a floating rod,so this means some one was in there before,mrmopartech 450 424 0445

 

[tguss]

They are all pressed pined , I read a guy had same issues as I have . Could they done this from factory ? To my beleive the motor have never been apart

 

[Mrmopartech]

This could have been done as you need to bore the small end to a non bushed size and if the rod is going to be bushed,they just go bigger.So if they are short rods,they just balance them and install them,done deal.mrmopartech

 

[swinger340]

They are all pressed pined , I read a guy had same issues as I have . Could they done this from factory ? To my beleive the motor have never been apart

I have pulled appart 2 73 340s w 645 floating rods.