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I agree the conecting rod pic is of little to no value. I may not call it retarded but it is of very little overall value. The V8 rods will be smaller due to shorter stroke and smaller bore. The I6 has a resonably close total displacement to the Chevy and Ford but has 2 less cylinders. It would need to be bigger in bore and or stroke to achive this, therefore the rod would also be bigger. Bigger is not alaways better. It equates to more rotating mass wich results in slower alowable revs. I have not heard of any rods breaking in Duramaxses or powerstroks, but I have heard of input shafts breaking in Dodge autos. That is the reason for the bilit input shaft. On the rod pic everyone points out that the Cummins rod cap is at an angle and trys to say it is for strength but that is not the case. It is at an angle to alow it to come out of the cylinder bore from the top. The Dmax and Powerstroke rods are strong enough to handle what they where designed for, and so was the Cummins rod. The dmaxes are new tecnolagy and new materials while the Cummins is a very old design and was desighned so big because the materials available at the time needed to be that big to handle the load the motor was designed for. It is probobly heavier than it needs to be for use in a truck but it was designed for industrial uses and has been converted for automotive use. where as the Dmax was desighned for use in a truck.
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Originally posted by bkrukow
I agree the conecting rod pic is of little to no value. I may not call it retarded but it is of very little overall value. The V8 rods will be smaller due to shorter stroke and smaller bore. The I6 has a resonably close total displacement to the Chevy and Ford but has 2 less cylinders. It would need to be bigger in bore and or stroke to achive this, therefore the rod would also be bigger. Bigger is not alaways better. It equates to more rotating mass wich results in slower alowable revs. I have not heard of any rods breaking in Duramaxses or powerstroks, but I have heard of input shafts breaking in Dodge autos. That is the reason for the bilit input shaft. On the rod pic everyone points out that the Cummins rod cap is at an angle and trys to say it is for strength but that is not the case. It is at an angle to alow it to come out of the cylinder bore from the top. The Dmax and Powerstroke rods are strong enough to handle what they where designed for, and so was the Cummins rod. The dmaxes are new tecnolagy and new materials while the Cummins is a very old design and was desighned so big because the materials available at the time needed to be that big to handle the load the motor was designed for. It is probobly heavier than it needs to be for use in a truck but it was designed for industrial uses and has been converted for automotive use. where as the Dmax was desighned for use in a truck.
I agree the conecting rod pic is of little to no value. I may not call it retarded but it is of very little overall value. The V8 rods will be smaller due to shorter stroke and smaller bore. The I6 has a resonably close total displacement to the Chevy and Ford but has 2 less cylinders. It would need to be bigger in bore and or stroke to achive this, therefore the rod would also be bigger. Bigger is not alaways better. It equates to more rotating mass wich results in slower alowable revs. I have not heard of any rods breaking in Duramaxses or powerstroks, but I have heard of input shafts breaking in Dodge autos. That is the reason for the bilit input shaft. On the rod pic everyone points out that the Cummins rod cap is at an angle and trys to say it is for strength but that is not the case. It is at an angle to alow it to come out of the cylinder bore from the top. The Dmax and Powerstroke rods are strong enough to handle what they where designed for, and so was the Cummins rod. The dmaxes are new tecnolagy and new materials while the Cummins is a very old design and was desighned so big because the materials available at the time needed to be that big to handle the load the motor was designed for. It is probobly heavier than it needs to be for use in a truck but it was designed for industrial uses and has been converted for automotive use. where as the Dmax was desighned for use in a truck.
Thats the long version, I agree.....
And if one was to have a truck pull-off, I doubt connecting rods would break in either....
Originally posted by fountain1fan
hey bkruow why doint you go get a chey and hook to my ctd and see how week yor pos chey is
hey bkruow why doint you go get a chey and hook to my ctd and see how week yor pos chey is
RamV Sorry to be so long winded but sometimes I get started and cant quit.
Funny stuff guys..... The "strong enough" con rods in the 2003 7.3 PSD were changed to a "new stronger material" design that were proven and known to bend with as little as a 50 Hp chip. Weight savings and cost helped out in that adventure. The new 6.0 is not even fair to discuss.
If you have seen a new connecting rod from the CTD, the design has also changed significantly to achieve those "revs"
all the V-8 converts wanted. Revs are great if you want to shift gears all your life, oh wait, they made an Allison for that...LOL.
Its funny that the input shaft isn't the weak link in any of the trannys untill you are pushing over 800 Ft-lbs. That is a Null point..
If you have seen a new connecting rod from the CTD, the design has also changed significantly to achieve those "revs"
all the V-8 converts wanted. Revs are great if you want to shift gears all your life, oh wait, they made an Allison for that...LOL.Its funny that the input shaft isn't the weak link in any of the trannys untill you are pushing over 800 Ft-lbs. That is a Null point..
I've seen the 48RE put down 557 HP on the Dyno Tranni all stock! Thats no sloutch! I have seen the Allison have problems in high horspower applications but if i did it again I would skip the stick and go for the 48RE.
Besides the the Chevy is _utt ugly! After a couple years it has not grown on me.
Besides the the Chevy is _utt ugly! After a couple years it has not grown on me.
The advantage of heavy rotating mass. When you are at your speed it keeps the momenium going smother and longer when you hit hills, and does not allow your power to fade quickly. I.E like my dang gasser does.


