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Re: Big block 440 rod casting numbers
[Re: torqueaddict]
#771436
08/11/10 02:40 PM
08/11/10 02:40 PM
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Joined: Jan 2003
Posts: 3,505
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,505
DFW
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The six pack rods ended in 906, or was it 908? Either way, they looked like this rod. That number looks like a late-1950s number, probably the LY rod that is the standard rod.
Floyd Lippencott IV
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Re: Big block 440 rod casting numbers
[Re: torqueaddict]
#771439
08/11/10 04:03 PM
08/11/10 04:03 PM
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Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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It's a term for that particular rod, look at it again , there should be an LY ON it , think it's opposite side of that number you posted . How much HP can it take , no clue ,I don't know the history of the rods you have. But with the advent of cheap chinese junk rods it's not much more expensive to buy a NEW rod made from stronger material that hasn't had 35 years or more of unknown use/abuse.  
Last edited by JohnRR; 08/12/10 03:57 PM.
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Re: Big block 440 rod casting numbers
[Re: JohnRR]
#771440
08/11/10 05:14 PM
08/11/10 05:14 PM
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Joined: Jan 2003
Posts: 21,083
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,083
Niles , Ohio
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I agree by the time you have them reconed ARP bolts resized you will have almost as much as a new aftermarket rod.They are a strong rod for factory.Im pushing close to 600HP on mine and its seen 7K quite a bit.I have Ross pistons so that cuts a lot of weight.I have one that came out of my 440 thats bent quite a bit.It was still spinning to 6500 and never cut loose.Rocky
Chrysler Firepower
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Re: Big block 440 rod casting numbers
[Re: JohnRR]
#771448
08/12/10 02:56 AM
08/12/10 02:56 AM
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Joined: Jan 2003
Posts: 931
dulcich
super stock
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super stock
Joined: Jan 2003
Posts: 931
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Quote:
It's a term for that particular rod, look at it again , there should be an LY cast into it , think it's opposite side of that number you posted .
How much HP can it take , no clue ,I don't know the history of the rods you have. But with the advent of cheap chinese junk rods it's not much more expensive to buy a NEW rod made from stronger material that hasn't had 35 years or more of unknown use/abuse.
Well, John, let's get the facts straight here... you will not find LY or anything else "cast" in the rod.
-dulcich
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Re: Big block 440 rod casting numbers
[Re: torqueaddict]
#771449
08/12/10 08:02 AM
08/12/10 08:02 AM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
I have stated previously what my goals are: 450-500 hp 500-600 fpt. And no track action, thats it really. I would only build a street motor, I am not really interested in track racing. And as cheap and reliable as possible, if I can use the stock rods,then thats great. I am really just fact finding and picking the brains of you mopar vets since I am such a noob
I've heard that the common casting #1851535 "LY" 440 rods are capable of 500HP when prepped right, e.g. magnafluxed, shot peend, ARP bolts, etc.
I also read in the 2009 Amsoil/Mopar Muscle Magazine Engine Challenge that the engine builder who won the challenge used "LY" rods. His engine made 580HP.
As for myself, I had been contemplating the purchase of some aftermarket Chinese made rods, e.g. Eagle, K1, Scat, 440Source, RPM, etc. But with the current condition of Chrysler as we once knew it and the demolition of the historical St. Louis manufacturing facility where my 69 Road Runner was built, it's kind of left me feeling a bit sentimental towards Ma Mopar and the Made In America Chrysler Corporation of old.
So I just happened to see a set of LY rods for sale on PAWs eBay store for $148.00 with free shipping. The Stage II PAW prepped rods are checked for straightness and cracks, shot peened, reconditioned, fitted with ARP rod bolts, and balanced as a matching set. For a street engine making 500HP or less I don't think you can go wrong with a deal like that.
I just got the rods yesterday and am pleased with them.
PAW eBay store - link
For other information on Mopar Big Block connecting rod casting numbers, check out:
http://www.440source.com/stockrods.htm
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Re: Big block 440 rod casting numbers
[Re: dulcich]
#771450
08/12/10 10:00 AM
08/12/10 10:00 AM
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Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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Quote:
Quote:
It's a term for that particular rod, look at it again , there should be an LY cast into it , think it's opposite side of that number you posted .
How much HP can it take , no clue ,I don't know the history of the rods you have. But with the advent of cheap chinese junk rods it's not much more expensive to buy a NEW rod made from stronger material that hasn't had 35 years or more of unknown use/abuse.
Well, John, let's get the facts straight here... you will not find LY or anything else "cast" in the rod.
-dulcich
Steve I could swear I have seen it on those rods in the past, but if I'm wrong it won't be the first time and it certainly will not be the last.
Since you are the mopar engine guru  why don't you tell us all why the rod is called an LY rod ?
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Re: Big block 440 rod casting numbers
[Re: JohnRR]
#771451
08/12/10 02:03 PM
08/12/10 02:03 PM
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Joined: Jan 2003
Posts: 3,505
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,505
DFW
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Since the rods are FORGED, I agree that the numbers aren't CAST into them. Technicality I know, but I think that's what was inferred from the earlier post.
Back to the studio...
Floyd Lippencott IV
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Re: Big block 440 rod casting numbers
[Re: mr_340]
#771452
08/12/10 03:55 PM
08/12/10 03:55 PM
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Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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Quote:
Since the rods are FORGED, I agree that the numbers aren't CAST into them. Technicality I know, but I think that's what was inferred from the earlier post.
Back to the studio...
Yes I see now , a pretty lame attempt at humor on the part of dulchic
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Re: Big block 440 rod casting numbers
[Re: JohnRR]
#771453
08/12/10 05:18 PM
08/12/10 05:18 PM
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Joined: Jan 2003
Posts: 931
dulcich
super stock
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super stock
Joined: Jan 2003
Posts: 931
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Quote:
Quote:
Since the rods are FORGED, I agree that the numbers aren't CAST into them. Technicality I know, but I think that's what was inferred from the earlier post.
Back to the studio...
Yes I see now , a pretty lame attempt at humor on the part of dulchic
Well, John, you don't want to be spreading misinformation like that on a public forum; of course if you were talking about Pontiac rods, then you would be correct. 
-dulcich
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