RE: Dist mods

["Westerlund, Ken" <kwesterlund@xxxxxxxxxx>]

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Hi Don,
I was thinking of doing the the distributor mods per the Old Reliable
but keeping the vacumn advance (to increase MPGs on the freeway).  I
thought I might tigthen the allen screw in the vacumn advance unit to
make sure it is only active during light throttle situations.  Any
suggestions?
The engine has:

*	Comp Cams Xtream Energy XE262H cam (Duration at .05 is 218 and
224 degrees) (lift is .462 & .470) 
*	Hooker Competition headers and dual 2.5 inch exhaust 
*	Mopar performance electronic ignition with chrome box
*	Stock iron heads (452?) 
*	Stock 1972 440 pistons 
*	Mopar performance unsilenced air cleaner 
*	Stock dual plane intake manifold (I have a performer RPM Plus
that I may put on)
*	Demon 750 CFM carb
 
The transmission has:
*	Shift kit 
*	Stock high-stall converter 
*	4.2 lever

The car has 3.23 gears and 29" rear tires (may go to 3.55 down the
road).
The car is strictly street driven and used as a daily driver with some
street racing.  

Thanks,
Ken

-----Original Message-----
From: Don Dulmage [mailto:big-d@xxxxxxxxxxxx] 
Sent: Thursday, January 20, 2005 8:34 AM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Dist mods

Dist mods still need to be done whaether you elect to use the vacuum
advance or not.. It can be done either way but the bottom line is you
need |(with anything other than a very mild cam) 34 to 36 degrees total
advance and you need it earlier with a cam. 
A 400hp 440 would be hard to do. A bone stock one with a set of headers
would be already there. (375 + 25 HP) and the combo could use a stock
distributor as delivered from the factory. 
The addition of a good intake (IE Performer RPM) would add easily anothe
25 HP and that would ot affect advance requiremnets. A cam under 500
lift would not normaly have enough Duration to require full distributor
mods (but not always) but would benifit from a quicker advance curve. 
Anything past that will really wake up with distributor mods. 
So why not tell us what cam you have and we could give a better answer. 
Any cam other than stock or an RV cam requires more intial without
adding more total. This really really wakes up the engine , makes it
easier to drive and puts the bottom end back in the engines power range.

I hope this helps. Still the decision is yours. If you are happy with
your idle quality, your bottom end performance and general perfomance
then that is fine . However if it wants to stall when in gear and you
have to keep giving it gas to keep it running and it is a dog out of the
hole to about 2000 to2500 RPm then do the dstributor. 
Don 

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