Came in the blue TRW boxes, looks like 80-s probably 90s?

Stamped on every rod Reconditioned for TRW.

New hone to fit small end, resized big end. Not sure if they put new bolts in? Not sure if they were magged? None have any signs of grinding for balance.

If I use these I will have the assembly balanced.

Would these live at 325-350hp in a street driver with low gears and kept under 5500? Pistons are middle of the road in weight, forged oem no dome 318 so probably a bit heavier then cast but not as heavy as the old TRWs or the 340 forged. Really not wanting to replace bolts and resize.

Thanks as always.

Trw factory reconditioned rod
350 hp shouldn't be a problem lighter the piston the better

Don't be afraid... these are forged rods... 6500 no problem.

I would have them magnaflux and check for roundness and proper size on both ends as well as center to center lengths before deciding

Mopar cast pistons are not light , 383/440 anyway , I bought forged replacements and they weigh pretty much the same as the cast they were replacing .

350HP , those should be more than adequate. I can't imagine them having the big ends resized and them not changing the bolts , do you have a stock original rod to compare the bolt markings ?

Those aren't high strength steel rod bolts, put a set of ARP rod bolts in there and they'll be fine.

They are simply reconditioned rods from the box by whoever trw used or bought from. Big ends check out good, small ends just have the new bushing pressed in and needs honed to fit. OEM type rod bolts if not oem, not sure if they are new or not.

If these as they are are not up to the task of a meager approx 350hp and 5500 from time to time as they are now I cant see spending the money for arp bolts and the machine shop costs to RnR them and then possibly have to resize already resized rods since they will still be the weakest link in this project.

I just weighed a oem cast and yes, a bit heavy... heavier then even a domed hyper of the same bore I used in a different project.

I remember in the 1980s the 3 letters TRW invoked awe and envy- the gold standard was "TRW forged pistons." While excellent quality it seems the creation in the 1990s of the ultra lightweight forged piston really made the old Gold Standard TRW piston obsolete.

I help several friends drag race 340 motors with the stock rods shifting around 6400 up to 7000 RPM with no major failures. I did get to freshen one motor and build another NHRA legal 1971 340 for a couple who raced a 1971 Challenger with th e340 motor and 727 built by Pro Trans with the lightweight internals, one motor made 420 HP at 5600 RPM with J heads and the other motor made 430 HP at 5700 RPM with the earlier1968/1970 X heads. We tested three different cams in four different ILC on all three cams I learn a little from that deal
Linda Myers drove the car and would shift the original blue printed stocker motor at 6400 RPM with a Isky cheater cam , the one I built with a sharp nose Lunatii stocker cam liked to be shifted at 7000 RPM

FWIW I'm running the lighter weight and smaller 273 rods in my 340...

A lot of hard passes over the last ten years shifting at 6800 with no issues...

My motor should be around 350 h/p...

Those rods that Mr Potatohead has actually are 273 rods!

YEARS and I mean 45'ish we had issues with the ARP bolts tweaking the big end out of round after resizing with the ARP bolts. When loosening and retorquing the bolts they would distort. The consensus at the time was the bolts were too hard for the rod. Using Mopar performance bolts resolved the issue.
I am only mentioning this as if you do change the bolts to ARP.'s or other brand you should have the rod's rechecked. If they are out, resize, loosen, retorque, and verify they are still rounds.
probably be OK to use as is with the limited RPM they'll see. Might be worth having them checked though

And the same rods in the 72 and back 318s and even a couple poly 318-s it seems. I did not think many would visually of thought they were more then that. The rods are the same PN and weight as the 72 318 block I took apart to use. The forged pistons are within 3 grams of the 72 cast pistons and using the 3.31 stroke they are very low compression but with the 3.45 stroke crank from way back (simple offset ground 318-3) makes for a nice right at zero deck setup.