Join Date: Dec 2008
Location: Schaefferstown PA
Thanked 15 Times in 11 Posts
Instead of using the factory head bolts the holes have been drilled and tapped for 12mm head studs which is a common need when you start adding more boost. A fire ring is a groove cut into the deck of the block around every cylinder hole. Then a special wire is laid in there flush. Its adds strength so you don't blow a head gasket. Most people with fire ring or oring the head but you can do both the head and the block for extra security. And the 53 is a casting number on the drivers side front of the block right above the oil pan flange. What this means is that the block was made it tupy brazil. There were a few different casting numbers and the ones from tupy or the "53" were said to have smaller coolant passages on the exhaust side of the block. Some guys had problems with them cracking right under the exhaust mainfold which then it didn't hurt the motor it just leaked coolant. You can stitch a crack back together with a welder. The ones that cracked just cracked. It doesn't matter if its a bone stock truck or a 1,000 hp truck. However not even close to half of the 53's produced cracked. They just have a name like toyota does right now. There's more info in the 24 valve stickies on 53 blocks. They one I have has not cracked and has around 135,000 miles on it. A new block from cummins is over $2,000. A used non 53 is going for about $800-$1000. I'm asking $400 because its a good block but just has a bad reputation.
1999 Dodge 24 Valve Cummins
P pump conversion with a 180 pump
Pump doesn't have a fuel plate, 4g springs, & full cut dv's, no afc, ect..
.093 fuel lines
Air Dog 165
custom ground cam
mahle pistons with .050 valve reliefs
balanced rotating assembly
8 x 11 injectors
ported head with 60lbs valve springs and 12mm studs
stage 5 east coast diesel bullit automatic trans.
triple disk dunrite torque converter
klienn train horns
Nubers with the twins and without header
12.7 quarter mile (then ht3b blew again)