Specifications

Proper Methods for O-Ringing the block (with NO receiver groove)
Supercharger/Turbocharger - Blow-by/PCV Fix
For those running either a Supercharger or Turbocharger, you may notice some blow-by on valve cover
(via the breather cap). Normally, this is caused by the factory PCV valve not sealing up properly under
boost. We've found that the PCV Valve from a late model Ford works excellent even under a 120psi air
pressure test.
The part to find is a Ford Motorcraft: FV -140 PCV Valve.
The only modification to make this PCV valve fit in the factory grommet is to enlarge the hole on the
grommet to 3/4". Otherwise, event he factory PCV vacuum hose fits.
Oil Pan Leak Fix - 408CID Engines (Also covers 360CID)
On some rebuilds and/or 408CID "Stroker" upgrades, you may experience an oil leak from the rear of the
oil pan (at the seal). This is caused by a known machining problem with the Mopar rear mains (verified
with Dodge and Mopar direct). The fix is to use the gasket from a '98+ 360 (which has a slightly thicker
rear seal) and to use a thin bead of silicone on both sides of the gasket. You can use a different oil pan (as
some other shops recommend) but they are all dimensionally the same with the exception of the center
portion, which has a indentation on the Dakota engines for the K-Member, and can all leak at the same
point. DC has a fix for this but it requires changing out the short block (to change the rear main) which
isn't an option for most engine rebuilds. You can NOT just replace the rear main on the vehicle.
Oil Supplements - Are they really worth it?
(This is straight from Mopar)
Engine Oil - Additives/Supplements
TSB NUMBER: 09-003-01
GROUP: Engine
DATE: May 4, 2001
SUBJECT: Engine Oil Additives/Supplements
OVERVIEW:
This bulletin reinforces a requirement to cease the current practice of using supplemental oil additive
treatments in all DaimlerChrysler engines.