Re: IML: found more numbers on 413 engine

[FltSgt@xxxxxxx]

Smitty

Here is the number one item to lookat on your heads.  The valve cover 
retaining bolts/ studs.  Do you have four ?  If you do, then, this means you have the 
most likely the original heads.   But MoPar or any one else did not like 
these heads.   From the marine division of MoPar they had a head which had six 
attaching points to hold on that leaking valve cover.  The marine head also 
flowed better air than the first series head that you have on your 413 powered 
Imperial ( or 383 powered whatever ).  The casting number of the last and best 
flowing heads for the big block MoPar engine is number 4006452.  If you find a 
set of thes heads the rocker arm assembly needs to be kept with the heads for 
the first series rockers will not fit anything except the first series.

                                       Rodger & Gabby
                                       Colo Spgs

'47 De Soto Custom w/Fluid Drive & passenger door mounted swamp cooler
'62 Crown Coupe w/std A/C & Auto-Pilot
'66 Le Baron w/dual A/C & reverbed AM/FM
'70 Overlander - InterNational Dbl
'77 D150 w/360, NP 4 Spd, 12 Bolt Axle, OEM Buckets & etc


-----------------  http://www.imperialclub.com  -----------------
This message was sent to you by the Imperial Mailing List. Please 
reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be 
shared with everyone. Private messages (and attachments) for the
Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx
To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm