cycletech

iTrader: (5)

I am building a 355 motor. I have stock rods with arp bolts installed that have just been redone. I also have eagle I-beam rods that are forged 5140 steel that are out of my 383 motor that broke the crank. which rod would be better to put in 355 with 11 to 1 compression engine. Running trick flow 62cc aluminum heads. Insight is most appreciated.

96lt1m6

iTrader: (31)

Nothing wrong with the stock rods with ARPs installed! If you already have aftermarket rods and all 8 are in perfect shape after your eagle crank broke go for it.......

Jerry Clayton

are the eagles 5.7?

and is the 355 already balanced with the stock rods???

D&A Machine Shop

At 11 to 1 you are at the limit for the stock rods, but the Eagles need to be checked by a machine shop before you use them since they have been through a broken crank.
Ask them to check them for straightness and have the small and big end checked.
A crank breaking can do some weird things to rods.
Are the Eagle rods a 5.7 length or a 6 inch?

Andy

1963SS

The Eagle 5140 rods are probably their SIR rods and are good for about 500 horsepower.....according to Eagle. The stock rods and ARP bolts are too. It's pretty much a lateral move and neither one is much better than the other. Your choice.

cycletech

iTrader: (5)

they are 5.7 rods, but i could just sell the eagles, if stock rods are just as strong.

BLK95-Z

iTrader: (2)

Ive got eagles in my 355

cycletech

iTrader: (5)

well, i just realized my pistons are set-up for 3.48 stroke, and stroke of eagle rods are 3.75, so stock rods it is! eagles are up forsale.

Jerry Clayton

it isn't the stroke of rods--its the center to center length----however your eagles are maybe 6.0 long and stockers are 5.7

93v8clone

The eagle rods are all ready and better than stock , by the time ya install bolts and remachine the big ends and so on your into a brand new set of rods anyway !!! Why use stock when eagle is way better and has the a.r.p bolts in em

1963SS

The Eagle rods are 5140 steel (not 4340 ) and are rated 500 HP. The stock rods can do the same (500 HP) and they've just been re-worked and new ARP bolts are installed. Also, the stockers are as good as the Eagles and remember that the Eagles came out of an engine with a broken crank. They will need at least checked. That's already been done to the stock rods.

I like Eagle stuff and have used a lot of it with no failures but in this case, with limited funds, the stock rods would be a better choice. IMHO

93v8clone

Well seeing as quick reading owned me lol ill agree

cycletech

iTrader: (5)

thanks, for the help! Yes, my stock rods have been reworked and arp bolts already installed.