All 318 and 340 pans will interchange as they share the same mains. The 360
pans differ - larger mains as stated. Both are true for all magnum and
LA-motors.
I have a chrome 318/340 pan for sale if anyone is interested. Not sure if it
is for a truck or a car (rear vs front sump) - will check if anyone is
interested.
Also a correction to part of a previous post. A ram has a rear sump just like
a dakota. I have pictures of 2 ram 360 pans if anyone is interested.
Latr,
Shane
"Steven T. Ekstrand" wrote:
> Why would placement of the sump require a different gasket?
>
> On the old engines (which is ALL I know), the 360 had a cast crank with a
> longer stroke than the old 3.31 stroke forged crank motors. To allow the
> long throw cast crank to survive Ma Mopar increased the diameter of the
> mains. This required a different oil pan between a 273/318/340 small main
> engine and a large main 360.
>
> If you held the two pans up the difference would be in the half circle dip
> at each end. The 360 has a bigger half circle cut out.
>
> NOW!!! That is true for the old engines.
>
> What is the case with the modern magnum's??? Did they increase the
> diameter of the mains on the later 318? I can't imagine they would. If
> that were the case then a 360 crank would fit in a 318 magnum without mods
> (requiring custom pistons though)??? This just doesn't sound right.
>
> -STE
>
> | >>Are you ABSOLUTELY positive? Why does Mopar show two different part #'s
> | for the gaskets then? 318 takes P5249931, 360 takes P5249932. Why would
> they
> | need two different gaskets for the same oil pan? If you did use a 318 oil
> | pan on your engine, then cool.... I just want to make sure I don't run
> into
> | any problems.<<
> |
> | the gaskets are different because the pans are different. The 318 pan
> will
> | fit a 360. The difference in the 2 pans is the sump. It's in the middle
> on a
> | Ram and in the rear on a Dakota. As far as I know, we re-used my oil-pan
> | gasket since the engine had never been run.
> |
> | -miggity
> |
-- '96 IndyRam-HisIndy-MPI TB Pulleys RTcam MPComp HVoilpump DynaGearDoubleRoller WindageTray CompTAs '96 IndyRam-HerIndy-numbered(#142)"Track Truck" '74 Triple-Black Dodge Challenger Rallye 360 EFI R&D vehicle '93 Dakota CC 318 - soon to be mine 8)
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