RE: 400 stroker

[Earl Helm <earlh@xxxxxxxxxxxxxx>]

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Don,

Why? Most of the rotating parts are going to weigh the same. 
Why give up the cubic inches? With only a .220 difference in 
stroke from the larger arm, I am uncertain your going to gain 
any reliability on the RPM side with equal weights. 

If you take advantage of the .220 and add that to the rod length,
then your starting to make sense. You would get the LR up to 
1.9. With iron heads, this would give you the most time at TDC,
and reduce the standard detonation issues. Not to mention this 
thing should be a tractor. Should pull stumps with the long rod. 
The longer rod would give you the desired effect on the piston 
pin, by reducing stress. Letting you get by with cheaper parts. 
I have not done the math, but I will bet with custom long rods, 
you could pin the 0 deck height thing perfect. 

Just probing the German mind... Give me more of your thoughts....

Earl 

-----Original Message-----
From: Don Dulmage [mailto:big-d@xxxxxxxxxxxx] 
Sent: Thursday, September 08, 2005 5:46 AM
To: 1962to1965mopars@xxxxxxxxxx
Subject: 400 stroker

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We are currently playing with a 400  stroked to 426.
3.53 stroke .
Stock 400 pistons can be used and they will be at or close to .00 deck. 

(We are making ours from 440 cores  as this is a full race engine , roller ,
alum heads etcetc but the original idea was to take a 400 block and make an
easily duplicated inexpensive engine that would produce good power. )

With a hydraulic cam in the 525 to 533 range for lift (minor flycutting of
piston would be necesary over 520 )
and duration at .050 around 253 deg and a decent set of iron heads (2.14/181
with pocket porting and ccing to 80 ccs) and proper springs, 500 plus hp
should be easily attained. 
Crank is the biggest expense. We use a 383 steel core and it costs about
$350 Canadian  to stroke it to 3.53.
The rest is all normal stuff. 
These 400 motors are surprising when given a chance . The 400 may be the
sleeping giant of the mopar camp. 
With  a stroke not much different from a sb bowtie they will rev all day
without hurting themselves. The huge bores sure help breathing, but the
smaller cubes cut the iron heads a bit of slack.  
Don
Author of
Return to Deutschland (True Adventure)
Old Reliable (Mopar)
http://stores.ebay.ca/Don-Dulmage-Enterprises
[Non-text portions of this message have been removed]

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Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 



bOyW3N.