View Full Version : Correct rod Part numbers, SB

11-02-2009, 01:55 PM
hi, does anyone familiar with SB rod Part #s know what i should have here?

I have just pulled down a 318, it was a late model replacement engine (cast 1984 and assembled 1993) and the rods are part # 3418645 (pressed pin and cast crank)

The 1971 340 i have just pulled apart has the same part number rods but full floating pins as 340's do. It is a forged steel crank engine.

I have another set of 340 rods (full floating) i bought off ebay, along with another set of 318 rods, they are all the same 3418645 part number.

i thought that 340 had a heavier rod with a different part number? I know the 360 does.

Anyone with a book that tells what the part numbers should be for which engine, or if they changed through the years?


11-02-2009, 03:12 PM
318s went to the heavier rods in '73.

11-05-2009, 08:55 AM
Thanks, although someone else said it was 74. What i do know for sure is that with Mopar, Nothing written is 100% gospel in reality when it comes to part numbers.

Only Mopars
11-05-2009, 09:01 AM
For what it is worth the numbers that you are reading on the rod is not the part number. It is a casting number. The same casting is used for different applications with slight variance possible for teh diferent intended useage. Like the pressed pin/floating rods mentioned above used the same casting number rods but the part numbers are different.