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Old 03-19-2006, 05:53 PM
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Connecting rods

ok, well im sure that some of the regulars on this site have heard the same question that i have, but give me a break, im a newbie to the engine building scene. i recently had a motor taken to the local shop to have is cleaned, bored ect. one of the upgraded parts i asked for was new connecting rods because i didnt think that my stock ones were up for what i had planned. i am going of a build sheet for a 350, 428 horse, i forget at what rpm that is at. anyhow, somwhere thru the communication breakdown, they resized my old rods. money is tight on this one and im having a tough time bs'ing the wife any more, she knows me too well. will my stock rods be ok? what hp are thy good to. everything is ballanced. they came out of a 78 truck, 4 bolt, large journal crank and i had them install a set of federal mogul hyper pistons. any help is sure appreciated.

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Old 03-19-2006, 06:10 PM
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If they were done with some new strong rod bolts then I would worry about it much, I think most people underestimate how strong factory rods are. That being said, these days, a rod upgrade to some aftermarket rods is pretty cheap insurance if you plan on more power in the future.
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Old 03-19-2006, 06:10 PM
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I ran a 2 bolt block, stock rods, stock crank, cast flattop pistons on a combo one with good heads and a 4.88 gear, 4 speed, ect...
I dumped the clutch numerous times at 6-6500 rpm's and reved it to over 7 grand a few times and never broke anything except I bent a valve one time.
So unless your reving on a regular basis to 7 grand or so Id say you will be plenty fine. Hg
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