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Rotating Assembly for My Charger?

Started by BLAM, March 09, 2007, 09:21:07 AM

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Chryco Psycho

I too have never seen a cooling problem with the Mopar siamese blocks unliek the Chev 400 small blocks  :brickwall:

BLAM

Well I got my ultrasonic inspection data back for my block.  The data below shows the wall thicknees if I have to go 55 over bore, which is what the machine shop thinks will be required to square everything up.  These are calculated thicknesses=measured thickness-0.0125".

I would like recommendations on using this block for my planned 4.25" stroke 7.1" rod 600hp to 650hp motor build plan!

1970 440HP block calculated bore thickness at a 55 over bore.

Cylinder #8          Top          Middle          Bottom                    Cylinder #7          Top          Middle          Bottom
Inside                .3175         .3385           .4065                      Inside                .2975         .2705           .2885
Outside             .2655         .1885           .1995                      Outside              .2555         .2755           .3225
Front                 .1885         .1625           .2065                      Front                 .2275         .2035           .2165
Rear                  .3945         .2885           .2655                      Rear                  .2625         .2485           .2685

Cylinder #6          Top          Middle          Bottom                    Cylinder #5          Top          Middle          Bottom
Inside                .2615         .1955           .2345                      Inside                .3075         .2435           .2625
Outside             .3245         .3445           .3875                      Outside              .2845         .2915           .3765
Front                 .1585        .1355           .1525                      Front                 .1895         .1705           .1945
Rear                  .1725         .1465           .1525                      Rear                  .1745         .1215           .1425

Cylinder #4          Top          Middle          Bottom                    Cylinder #3          Top          Middle          Bottom
Inside                .2945         .2235           .2575                      Inside                .2905         .2375           .2515
Outside             .2785         .2915           .3975                      Outside              .2575         .2595           .3065
Front                 .1495         .1425           .1445                      Front                 .2035         .1655           .1945
Rear                  .2155         .1885           .2095                      Rear                  .2505         .1485           .1615

Cylinder #2          Top          Middle          Bottom                    Cylinder #1          Top          Middle          Bottom
Inside                .2675         .2385           .2765                      Inside                .3575         .3055           .3015
Outside             .2995         .2975           .3295                      Outside              .2975         .2865           .3345
Front                 .2545         .2395           .2575                      Front                 .2925         .2595           .2785
Rear                  .2395         .1795           .2045                      Rear                  .1895         .1495           .1705


So would you build this block or replace it with a new MOPAR Performance siamese block that I asked about on an earlier post?

Thanks!
Andy
RLTW - "We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm." - George Orwell

firefighter3931

Andy, just to clarify ; when you're referring to inside vs outside....what exactly is the point of reference. I usually see a sonic check chart with each cylinder from an overhead view and the numbers posted on all 4 sides top to bottom. Just want to make sure of what i'm looking at. The major thrust side is the critical dimension.....the passenger side cylinder wall on both banks.

Thanks, Ron
68 Charger R/T "Black Pig" Street/Strip bruiser, 70 Charger R/T 440-6bbl Cruiser. Firecore ignition  authorized dealer ; contact me with your needs

BLAM

Hi Ron

Sorry!  Inside refers to lifter valley side of the block and outside would be the exhaust manifold side.  So in the case of my table the outside measurements on 2,4,6, and 8 along with the inside measurements on 1,3,5, and 7 are the thrust sides.

Thanks

Andy
RLTW - "We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm." - George Orwell

firefighter3931

Andy, want to sell me that block  :D  ;D   Looking at those numbers  have to say i'm impressed......that's probably the best OEM block sonic check that i've ever seen. I see no problem using it for a 4.25 stroke build......i would use it in a heartbeat. Some MP aftermarket blocks don't look that good !  :P

I haven't checked my 75 block yet but i'd be tickled pink if it looks anything like yours !  :icon_smile_big:



Ron
68 Charger R/T "Black Pig" Street/Strip bruiser, 70 Charger R/T 440-6bbl Cruiser. Firecore ignition  authorized dealer ; contact me with your needs