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New rods for my 572?

Posted By: 70satelliteguy

New rods for my 572? - 12/07/14 05:25 PM


I've had this combination together since 09 and it is time!
My Mega block needs 30 over and the BME 396 Aluminum rods have 339 passes on them. This includes some Nitrous passes with 300 HP hits.
70 B body 3600 lbs.,727 w/brake,Dana 4:10,14 in. Goodyears. mid 9's high 8's on juice.

Can someone recommend a replacement rod? I would like to put another aluminum one in there but I am retired now and am looking for something that will last longer.
Thanks Mike

Posted By: MR_P_BODY

Re: New rods for my 572? - 12/07/14 05:51 PM

GRP.. quality material used in them
Posted By: dvw

Re: New rods for my 572? - 12/07/14 05:56 PM

Quote:


I've had this combination together since 09 and it is time!
My Mega block needs 30 over and the BME 396 Aluminum rods have 339 passes on them. This includes some Nitrous passes with 300 HP hits.
70 B body 3600 lbs.,727 w/brake,Dana 4:10,14 in. Goodyears. mid 9's high 8's on juice.

Can someone recommend a replacement rod? I would like to put another aluminum one in there but I am retired now and am looking for something that will last longer.
Thanks Mike





That's good to hear. My 572 has BME 426 forgings. 203 passes in 2 years. I'm going to run them one more season.
Doug
Posted By: GTS340

Re: New rods for my 572? - 12/07/14 06:00 PM

R&R aluminum rods
Posted By: 70satelliteguy

Re: New rods for my 572? - 12/07/14 06:18 PM

If I could get a good price on Aluminum I would go with them again but as I said I would like to maybe go with something less expensive in STEEL . In realize if I subtract the difference I would not be saving much but I am looking at down the road in a few more years and having to replace them AGAIN!!
Thanks Mike
Posted By: qwkmopardan

Re: New rods for my 572? - 12/07/14 07:03 PM

Callies Compstars are decent, bang for the buck. Oliver, Crower, Manly,Carrilo are all good rods, but are in the price range, or higher, than BME Aluminum, but will likely last as long as 5 sets of Aluminum rods. Remember switching from alum. to steel you will be putting Mallory metal, [$$$$], to balance the crank, because the steel rods will be a couple hundred grams, [each], heavier. You could spend $5000+ and get a set of Crower titanium rods and have the strength of steel and the weight of aluminum.
Posted By: Al_Alguire

Re: New rods for my 572? - 12/07/14 08:28 PM

GRP or MGP are the best options IMO. We just recently pulled the engine in the Cuda to freshen it. The GRP rods in it had 404 passes on them. The engine makes just under 1100hp and this is typical. We pull them at 400 laps no failures.
Posted By: John_T_Brown

Re: New rods for my 572? - 12/08/14 04:12 PM

Quote:

GRP or MGP are the best options IMO. We just recently pulled the engine in the Cuda to freshen it. The GRP rods in it had 404 passes on them. The engine makes just under 1100hp and this is typical. We pull them at 400 laps no failures.




MGP if you want to spin it HIGH and HARD!

Attached picture 8355286-MilanPoints.jpg
Posted By: EchoSixMike

Re: New rods for my 572? - 12/08/14 04:17 PM

My 505/B1/Megablock took three pieces of Mallory going from GRP to top of the line Manley steels. Mine's mostly a street motor on E85. A solid hit on N2O plus decent heads makes me think aluminum rods are safer just for soaking up some stress. A refresh is way cheaper than driving over the crank. S/F....Ken M
Posted By: 70satelliteguy

Re: New rods for my 572? - 12/08/14 09:34 PM


I do not spin the motor very high. With 4:10's it traps around 6500 on motor and just at 7000 on juice which we only use a few times a year on heads up events. I am tempted to run them another year(339 on them now) but I am not a gambler even though I don't know anyone who has broken an Aluminum rod.
Mike
Posted By: camastomcat

Re: New rods for my 572? - 12/08/14 09:39 PM

Quote:


I do not spin the motor very high. With 4:10's it traps around 6500 on motor and just at 7000 on juice which we only use a few times a year on heads up events. I am tempted to run them another year(339 on them now) but I am not a gambler even though I don't know anyone who has broken an Aluminum rod.
Mike





Wow, I do...me. And lot's of other people too. You got good use out of those and I would replace them....JMO.
Posted By: NOM36

Re: New rods for my 572? - 12/08/14 11:17 PM

I am currently putting together a 572 with GRP rods.

Do you guys let the engine brake in shutdown area or shift to neutral?

I am using a reverse pattern shifter so not much of an option.
Posted By: MR_P_BODY

Re: New rods for my 572? - 12/08/14 11:39 PM

Quote:

I am currently putting together a 572 with GRP rods.

Do you guys let the engine brake in shutdown area or shift to neutral?

I am using a reverse pattern shifter so not much of an option.




If you spin it high RPM it is advised to use the clean
neutral... I didnt have it in my trans and I was gonna
spin mine to 9000+... but it was a smaller cube engine..
the clean neutral just gives more life to the rods
Posted By: NOM36

Re: New rods for my 572? - 12/08/14 11:50 PM

Ok, I only plan on running 7000rpm.

Heard similar about high rpm. I'll be lucky to put 60+ passes a year down anyway. Replacing every few years won't hurt the pocket too much.
Posted By: MR_P_BODY

Re: New rods for my 572? - 12/09/14 12:02 AM

Quote:

Ok, I only plan on running 7000rpm.

Heard similar about high rpm. I'll be lucky to put 60+ passes a year down anyway. Replacing every few years won't hurt the pocket too much.




GRP told me you can get WAY more than the old 300 runs
on them... if I have the clean neutral and werent spraying
I could think of 600 passes... but I dont know about
that number... and I was gonna use LIGHT pistons
Posted By: sc301v

Re: New rods for my 572? - 12/09/14 03:41 PM

Taking mine out this weekend ... They only have 617 passes on them in 3 years. They are GRP standard series 6.950 long.2.200 big end and .990 pin.. Trap at 6900 and shift at 6800.

I think if the oil system is up to par the bearings stay good in turn helps the rod live.. Rods usually don't break just because they do..There is normally another malfunction that helps the rod break.
Posted By: 70satelliteguy

Re: New rods for my 572? - 12/09/14 05:29 PM


"Wow, I do...me. And lot's of other people too. You got good use out of those and I would replace them....JMO."

camastomcat Could you elaborate about your rod breaking
Thanks Mike?
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