Questionable parts in motor

[newtowner]

rods are federal mogul #3755 ap .030
mains federal mogul # 311apu .010

lifters had a copper ring around the top of them.

This was supposed to be a stock-unopened 65k motor, but it lasted about 2 weeks after install. Basically about 4 hard pulls killed it (spun #4 rod bearing). My concern is that the crank has already been turned.

 

[Russ Merritt]

Probably more than once.........Not good.

 

[TurboToy]

looks like to me the crank has been turned 10/10 on the mains but it looks like it has turned the rods quite a bit more... odd what does it say on top of the pistons there should be a -10 or something like that if the cylinders have been worked. my advice and i have been in your shoes either take it to a well known builder or do like i did read up and build it your self not that hard just take your time i made 440rwhp on my sig combo and have built 1 other that is still goin great. hoping to make more with my new.. good luck if you have any questions drop me a line.


turbotoy

 

[Mike Licht]

Looks to me like the crank is .030/.010 If it spun a .030 rod it is done
Mike