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Author Topic: Visual differences  (Read 744 times)

Stan Paralikis

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Visual differences
« on: September 26, 2008, 06:32:52 AM »

If you're looking at pictures of a big block motor in a car, what clues do you you look for to determine if it's a B or RB block? Commando12008-09-26 11:34:16

Stitcherbob

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« Reply #1 on: September 26, 2008, 07:52:21 AM »

Distance from DS valvecover to brake booster or MC is one quick way.....

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Snotty

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« Reply #2 on: September 26, 2008, 10:50:36 AM »

That's how I usually notice too.  Also, the water temp sending unit is sometimes in different places.  But, if looking in person, I look at the data block right away.
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Stan Paralikis

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« Reply #3 on: September 26, 2008, 12:10:58 PM »

Quote from: stitcherbob
Distance from DS valvecover to brake booster or MC is one quick way.....
Man, you'd need one sharp eye for that.  There's only a 3/4" difference.
I need YOUR glasses. 

Leaburn Patey

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« Reply #4 on: September 26, 2008, 06:19:30 PM »

RB has a flat pad between the ps pump and water pump housing.
Usually,there are numbers/letters stamped on it.
B does not have this feature.
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Snotty

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« Reply #5 on: September 28, 2008, 10:16:21 AM »

Quote from: CBarge
RB has a flat pad between the ps pump and water pump housing.
Usually,there are numbers/letters stamped on it.
 
That's true of the early Bs, but not the later ones.  The 400 I have in my backyard has the ident pad.  It was that I was refering to in my previous post.
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Scott Preston

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« Reply #6 on: October 01, 2008, 05:42:19 PM »

If you have this block,and can prove with the secondary codes that its a "B" motor with "RB" stamp pad,I would like to see it and see pictures of it too.In 35 years of building motor motors,I have never seen what you are stating.If you can,post the casting number,and all the secondary codes on the pad,so I can decode the motor.Mrmopartech from:MYMOPAR.com
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Snotty

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« Reply #7 on: October 02, 2008, 02:47:40 PM »

Let's be sure we are talking about the same pad...
 
In the front of the motor before the intake manifold, just to the right of the thermostat housing - yes?  It's on the '75 400 I have, and I've also seen it on many 383s, including the one from a '65 Plymouth I took the AC bracket off of. 
 
I don't see the mystery.  But to satisfy your curiosty I'll take a picture of the motor.
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Stan Paralikis

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« Reply #8 on: October 02, 2008, 03:39:58 PM »


Steve

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« Reply #9 on: October 02, 2008, 05:00:34 PM »


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Matt Aker

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« Reply #10 on: October 02, 2008, 05:06:28 PM »

Me thinks that Snotty's "'75 400" is an idustrial 440 from an airport tug or an air-raid siren...
 
Alast, we wait...
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Scott Preston

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« Reply #11 on: October 02, 2008, 06:55:46 PM »

Is it possible to have a special block from mother mopar,from a industrial,special applacation unit,sea going unit,truck,any thing is possible with these people and Could happen.I want to see it,decode it,and diesect it as much as possible to be sure,and rule out any human error,and note the block on out site as well.I would ask for the stroke of the crank for one,if the motor is apart,and take down the numbers on the crank.As this has got we going through every mopar race manual and all the thousands of books I have,mrmopartech
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Snotty

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« Reply #12 on: October 04, 2008, 09:58:00 AM »

Ladies and Gentlemen, I am here to inform you that Altzeimer's has taken over the once fertle mind or the Rev. J. Scott Allred.   He will answer no more questions on this subject.
 
Dr. C. Moore Butz
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Snotty

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« Reply #13 on: October 04, 2008, 10:00:45 AM »

That 400 motor has an ident pad on the left side of the distributor, behind the water pump housing.  How I knew that motor was a 383 is now a mystery.  I still have the AC bracket and it fits on the 400.
 
Pictures of my 400 would not have helped in the crank, etc, because it has the wrong crank in it, whcih is why it's sitting in my back yard.
 
Sorry boys.
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Stan Paralikis

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« Reply #14 on: October 04, 2008, 01:05:46 PM »

I was waiting for everyone to finish their popcorn before I posted this...
 


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