PM steel connecting rods?
08-24-2005, 08:03 AM
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Staging Lane
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PM steel connecting rods? Hey guys im asking this for my friends sake.
He has an older camaro with a crate small block 350 in it. Hes interested in buying a supercharger for it this winter but I recommended he find out what the engine can withstand first.
The weak point seems to be his connecting rods id guess but I can not find any information on these. It just says "PM Steel Connecting Rods" on his engine stats, and ive seen these come with many other crate motors but there are never any specs on em.
Anyone got some info on these?
He has an older camaro with a crate small block 350 in it. Hes interested in buying a supercharger for it this winter but I recommended he find out what the engine can withstand first.
The weak point seems to be his connecting rods id guess but I can not find any information on these. It just says "PM Steel Connecting Rods" on his engine stats, and ive seen these come with many other crate motors but there are never any specs on em.
Anyone got some info on these?
08-24-2005, 08:45 AM
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08-24-2005, 03:59 PM
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i dont think your going to have a probalem unless you plan on excessive amounts of boost, in which it probaly cant hold anyways. just get a small b&m style one or mabye a 671. shoot for around 6lbs of boost.
08-25-2005, 11:38 PM
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PM stands for powdered metal. Stronger than the "pink" rods back in the day. They come in the stock Lt1's and there's alot of guys on this board running the hell out of them.
08-27-2005, 01:25 AM
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As others have said, good fracture-cap PM rods are just as strong if not better than most old-school cast or forged rods. Sinter forging and fracturing is the future.
08-27-2005, 03:41 PM
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Horsepower doesn't kill rods normally up to a certain point, rpm is what twists and breaks them. I would think he'd be ok with those rods as long as he doesn't twist it up to a really high rpm with alot of boost. I'd make sure I had really good bearings and bolts though.
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08-29-2005, 05:08 PM
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pm rods This may sound crazy but I have used a single set of these rods for almost six years now in a 350 crate engine that has had several different combos of heads and cams. I have spun this motor to around 7,000rpm quite frequently on 150 hp worth of nitrous.
08-29-2005, 06:00 PM
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it depends, but I'd say they will hold up fine for what you have planned, but still not as nice as an aftermarket rod such as Eagle or Scat. They should hold 450-500 ponies, but the rpm is what takes the toll on them. Use good fasteners (ARP here) and they'll last longer.
Derek
Derek
