Main and Rod Bearing

[john108]

505 Stroked 440 1976 Block
There are a few SERIES of Bearings:
Which would be the recommended choice? Info Taken from 440source website.

http://store.440source.com/Main-Bearings/products/112/

The material coatings are slightly different.

V Series Main Bearings STD - "RB" Engine - Oil Groove is Half at .150
P Series Main Bearings  - "RB" Engine  -  Oil Groove is Full at .100
H Series Main Bearings STD - "RB Engine" -LARGE THRUST  -  Oil Groove is Full at .100

I know I should use the Large Thrust for bearing #3 and have to check to see if it is available for the chosen series.
Oversize fillet, for radius on crank, is an issue.
Also consider Oil Groove.

The V Series seems to be the higher performance bearing.
My question is geared towards Rod Bearings as well as Main Bearings.

[green69rt]

I seem to remember the V series corresponds to the standard HP 440 bearing.  The P series with the full oil groove was the higher performance option, at least it was at the time I rebuilt my old 440, might have been standard in the Hemi.  Large Thrust ...

[john108]

440source refers to the P series are the original staple bearing:

P Series Main Bearings -.010 - "RB" Engine
"RB" (413/426/440) Main Bearings / Size: -.010 /
Series: P / Material: TM-77 / Oversized Fillet
C hampher: NO / Oil Groove: Full .100" / C levite's
P series are the original staple bearing. They start
with a hardened steel back for strength and
support. Over that is a cast copper lead lining to
provide the durability and support to withstand the
loads of engine operation. Then a nickel plating is
applied to prevent interaction between the copper
lead and the final layer, a strong, extra thin (.001"
or less) electroplated overlay of babbitt.

This is what they say about V series:
We feel
the "V" series are a great choice for performance
bearings. "V" series have found their way into
nearly every form of motorsports with virtually no
problems. These bearings are still a tri metal
bearing, however they use a lead indium overlay
instead of the babitt in the above bearings. Lead
Indium has amazing properties. It has a super low
surface friction coefficient or lubricity, meaning
wear at startup before the engine can develop oil
pressure is greatly reduced. It can withstand and
operate at higher temperatures for longer periods
of time. It will resist flaking and peeling under
extreme loads better than any other bearing. It
has the highest resistance to corrosion of any
bearing material, and it does all this while still
having unsurpassed properties of embeddability,
conformability and fatigue strength. And the best
part is just because these perform so exceptionally
in a racing environment, there is no reason they
can't be used with equal success in a street car or
in milder performance engines as well.

And this is there statement for H series:
Originally
developed for Nascar racing, H series are made of
TM-77 material, however they are not flash plated
with the lead/tin apparently in an effort to help
them seat better. They also have enlarged
champhers to help them clear bigger crankshaft
fillets. They also have a medium level of
eccentricity. A good overall performance bearing.

Many members here have built high performance engines and I was hoping to learn from what they learned and used. 
Thank you.

[Challenger340]

"P" Eccentricity, as everyone should know by now....stands for a "greater degree of Change" in the Bearing Thickness, from it's thickest point in the middle....over to each parting line(thinnest Point.)
"P" Bearings are built this way....to allow for Fastener "Stretch" under load at rpm....which causes the housing bores to elongate and "PINCH" at the parting line....hence why the "P"'s are thinner there to allow for this.

I won't get into the rest of them here....H, M, V....etc., etc., suffice to say talk to your Machinist. If he gives ya dumb stares....WALK AWAY !