RE: Stroker Crankshaft Information

From: Bernd D. Ratsch (bernd@texas.net)
Date: Thu Aug 30 2001 - 08:09:07 EDT


The Configurator is still being "debugged" but is starting to take shape
(finally).

On the PCM...you can get away with a custom flash or even the stock PCM
(in mild 408 strokers), but ultimately a SpeedPro is really the
solution. (Working on pricing with them as well.)

- Bernd

-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net] On Behalf Of brad k
Sent: Wednesday, August 29, 2001 11:28 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: Stroker Crankshaft Information

Thanks for the info Bernd. I'm not sure if I'm going
to try and assemble all of the parts myself or buy
one of the kits available online. I'm interested in
seeing what the 'Online Configurator' is going to
look like!

My plan is to assemble an engine over the winter
and install it next spring. In the mean time I'm
getting the truck as ready as possible with
gauges/shift kit/etc. Also working on porting some
heads and an intake and getting as many bolt ons
as I can.

Still not sure what to do about a computer though.

Brad
---------------------------------------------------
98 Dakota CC 4x4 5.2L, 3.55LSD, 32x11.5 BFG M/T
Gibson Cat Back Exhaust, JBA headers and Y-Pipe
MP PCM, 180 T-stat, 3923's, Taylor Wires,
Accel Cap/Rotor, Ported TB, K&N FIPK2, IAT Adjuster
---------------------------------------------------

--- bernd@texas.net wrote:
>
> There's more to it than just the crank though.
> You'll get 402" with just the
> crank (and you'll need to notch the block) and 408"
> with the pistons @ .030"
> overbore (also have to notch the block). Also,
> there's much more involved than
> just crank and pistons as well. The stock rods
> (while they are adequate) are
> not recommended for the 408 Stroker as they have to
> be reconditioned and the
> cost for this (with the pins) is the same as a new
> set of I-Beams (all ready
> for installation).
>
> If you replace the crank, you might as well
> rebalance the reciprocating
> assembly for reliability. This presents another
> option: Internal or External
> balancing. While Internal balancing may be what
> most like to have done, it is
> more expensive and will require a different dampner
> and flexplate. Have it
> externally balanced with a new Mopar flexplate and
> dampner or...save a little
> bit of money by having your existing dampner and
> flexplate used for the
> balancing.
>
> - Bernd
>
>
> > FYI for anyone interested in stroking their 360.
> >
> > I just called the Mopar Tech line and asked which crankshaft would
> > work with the 360 Magnum motors.
> They
> >
> > said any of the one listed in the catalog would
> work,
> > so here are the 360 crankshaft part numbers:
> >
> > P5007258 4" stroke Heavy Duty Cast Crank
> > P5007254 4" stroke 4340 steel forged crank
> >
> > Mopar Tech line: 248-969-1690
> > Magnum Engine Tech line: 1-800-362-3569
> >
> >
> > Brad
>
>

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