Scat 4340 I-beam cap screw rods whats the good, bad, and the ugly on these? I can get these set up for floating pins for $259. They would be going in a 350. Im looking for a good alternative to stock rods. I don't want the heavy H-beams. My engine will be sprayed as my last engine was. I was starting to sweat over the stock rods. The biggest hit would probably be 175 shot on a 400-425? horsepower engine. Just think I have done the same with the stock rods. :eek:

I think they're the best deal out there, for around $250 you get "4340 rods" with ARP bolt, a way better deal then the eagle cheap metel junk everybody runs. I think its the best rod for the money by far, most 4340 rods are $500+. A buddy of mine with a 500+hp 383 sprays a 200-250 shot on these and hasnt had a problem, but thats probably pushing it.

BOTTLED MOUSE
Just had a coustermer bring in a set of those rods,looks like a nice set of forgings these ones have the 7/16 cap screws and may have to clearance the bottom of the cylinders a little.
I think its a very good piece and will be fine for your application.

Originally posted by 67RS502:
eagle cheap metel junk Thanks for the warning...I'll be sure and wear full body armor and a helmet when I fire my engine for the first time, as I'm sure now that my rods will fail and send the pistons flying out of the block.

In defense of the Eagles, I've run several sets on smallblocks at or near the 450 - 500 hp level with no failures, big blocks pushing over 600, same thing. That said, Scat has a new design rod that they call Pro Mod or something like that. They look a lot like a Crower or Lunati. I used a set on my current 400 build, 6 inch, had to do NO grinding on the pan rails and the top shoulder of the rod is recessed to clear standard core diameter cam. They're not much more than the ones you're looking at and are some really nice pieces. It was worth it to me to have 'em drop in without grinding the block. HTH

so how is it the eagles are cheap and the scats are not? this would be news to me, and quite a few other guys i know.
i'm running a set of the "cheap" eagle i beams in my 406, and havn't had a "block failure" due to one yet, guess i'm just lucky?
my machinist has used both scat and eagle in his motors (own personal) and likes them both. he had eagle i beams in a blazer with a 406 that ran 9's with a 250 shot, all season long, for two seasons, never a failure. my buddy ran eagle h beams in his 8 second big block nova, and they are still alive and well almost four seasons later.
so i guess what i'm saying is, what evidence do you have that eagles are a lesser quality than scat? i'm curious to hear it. i know several guys including myself that have had great luck with them. and that actually goes for scat as well, i have heard no real bad stories about them either.
just my .02

I was just saying that the eagle sir rods that everyone loves (for some unknown reason to me) are 5140, a weaker metal and cost way more then a Scat 4340 rod (as cheap as $229). So I just dont see why someone would pay a $100 more for a weaker set of rods, when the Scats are such a good deal for the $. That would be like buying stock axles for $250 when you can get some Moser's for $220.
Get my point. Nothing wrong with running the eagles or stock rods - I've seen SBC with stock rods go 7500 all the time, but nowadays good rods are so cheap, why not get a good set of rods?

FYI - I paid $229 for Eagle Capscrew Floating Pin I-Beams w/ARP bolts.

Got n/p with the scat I-beam cap screws I got from

http://cgi6.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dynoflo1

They were closer to 320 at the time.

If I did it over again id consider a set of lunati promods.. less$400 but probably a little closer tolerance on the side clearance (mines kind of high, probably also related to the CAT crank).

i see your point, but heres mine. the eagles or the scats are an excellent choice for the combo listed, and at least when i bought my rotating assembly, the price was exactly the same. the reason i went with eagle was my machinist liked and had used more eagle cranks with zero problems. and thats not to say he has problems with scat either.
but no matter how you look at it, both rods are very good middle of the road pieces, easily good to 600 horse (hell i believe they are both rated at 550), which seemed to fit the combo listed and mine as well. if i wanted a great rod, i wouldn't hesitate to spend the cash on one, and it wouldn't be scat or eagle.
so while i appreciate your point/opinion i just take exception at describing them as "junk", when for the coin, they are BOTH one hell of a deal. hell factory rods are tough as nails when prepped well with a good rod bolt, i too have seen more than one factory rotating assembly spin 7k+. have you ever seen an eagle rod fail? i havn't and lots of the motors i know of are surely exceeding the rated horsepower of the rod.
well, just my .02 again (guess thats .04 now ;) ), no offense taken or intended, just voicing my opinion graemlins/beers.gif

He, He!!

Junk metal pile, small bolt, 283 rods went above 7,000rpm in my unbalanced junk 301 ALL the time!!!

What's all the fuss about our SB rods???

pdq67

Eagle = junk? I dunno about that one. I personally know of a few guys using setups like this on BBC and SBC running in the 8's.

I just bought a Eagle 4340 3.75" stroke crank, Eagle 5.7" 4340 rods w/ARP L19 rod bolts to go along w/my SRP blower pistons..should easly hold 1000hp (not that I will be close to that..well..about 200hp away..hehehe)

The Scat and Eagle rods as already mentioned are both good.
I agree with 67RS502 the Scat are less $ I`ve used 6.0" Scat rods that were $189.
I put a set of Eagle SIR 6.0 rods in a 383 and absolutly no grinding anywhere.
My last 383 I used Scat 6.0" capscrew rods real nice BTW, but I had to grind all over the place for clearance.

I`m going to put Eagle SIR`s in a 383 I`m now doing just to not have to grind so much.

On the CRANK side of things the Eagle cranks do not have a real good reputation and it`s generally accepted that the Scat cranks are better.

PDQ the old factory stuff was fine but the new aftermarket pieces are made with a much wider selection in lenghths and material and features that the factory parts just don`t have.

And try and price out a set of GM bowtie rods or L-88 rods talk about "sticker shock" :eek: