Connecting Rods, 89-98 5.9L 12 Valve

[Bobcat698]

I've been told that the 5.9L Marine 370 rods are the strongest in comparison to the 89-98 rods.
I'm told the 89-95 rods are slightly weaker, & the 96-98 rods are a bit beefier.

However, when I looked the parts up in quickserve, ALL of the rods from 89-98 show the same part number.

I'm guessing that they made changes over the years and strengthened the rods, then superseded ALL of the numbers to a single part number, which is potentially as strong or stronger than the 370 marine rods.

Anyone else have an idea, does this sound right?

 

[Muddin_dude06]

HMMM I don't know Garrett, are you tearing your blavk truck down again? I know Cunningham has some "Diamond-Lock" connecting rods but they are super expensive.

 

[Bobcat698]

HMMM I don't know Garrett, are you tearing your blavk truck down again? I know Cunningham has some "Diamond-Lock" connecting rods but they are super expensive.

Yep, engine is already at the machine shop

Plus we are building a few more engines. :evil

 

[AsTroSS]

According to my investigation all engines have same conrods (#3925232 ):
1.Marine Diamond 370 (1997) - 370hp
2. Ram 1994 - 160hp
3. Ram 1997 - 180 hp
4. Ram 1998 (12V) - 180hp
5. Ram 1998 (24V) -215hp
6. Industrial 1994 - 152hp
7. Industrial 1986 - 130hp

Do I have to continiue .... oke:


:evil


This info is based in engine serial numbers and Quickserve .

 

[THATpreston]

Keating has been working on some billet B rods. I think I have a photo at the house I can round up.

 

[Bobcat698]

I did the same investigation AsTross and found the same thing.. So I don't understand how the info I got came to be.

 

[9712valve]

how far horsepower wise do you have to go before rods might be needed? i would guess 800+?

 

[zstroken]

It is more of a torque limit, than a HP. Guys are pushing 1200+ with stock rods at higher rpm. The guys that are tweaking the stock rods are doing so at about 1000HP but at a max rpm less than 3400.