Eagle 4340 5.7 rods - Hot Rod Forum : Hotrodders Bulletin Board
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Old 03-11-2008, 01:18 AM
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Eagle 4340 5.7 rods

Has anyone ever had any problems out of these? I got a great deal 300$ for a full set 5.7 and bushed. ARP2000caps. Any feed back on these is appreciated. Don't mind my smudgy finger prints on them.
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Old 03-11-2008, 06:57 AM
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You shouldn't have any problems with them. I use a lightweight 6" version of this rod in my LT1 stroker. 10K on the daily driven engine now, 450/500 HP/TQ with occasional romps to 6500 RPM or so.
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Old 03-11-2008, 10:22 AM
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I've heard of problems with the i-beam sir rods not staying round but nothing about the h-beams.
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Old 03-11-2008, 10:32 AM
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I used these in my 600 hp 496 BBC, 4.25 stoke 6.535 rods, 6500 rpm no problem and that is putting alot more stress on them then a small block ever will.

Here is a tip though, make sure you use plenty of lube on the bolts, the fine threads on those arp bolts tend to get galled and they are so hard that it is impossible to extract them.
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Old 03-11-2008, 10:53 AM
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Thank you for the tip on the ARP cap screws I had somewhat of a problem with ARP bolts that were super strong on a u-joint straps once I will take that advice and use it.
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Old 03-11-2008, 10:58 AM
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no problems got them in my 383 stroker had them also in the past in a 355 sbc no problem had them checked before puting in my 383 stroker and perfectly round good luck.
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Old 03-11-2008, 12:01 PM
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Check the bore in those eagle rods. I have found them little too tight and may have to hone them out little.
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Old 03-11-2008, 01:58 PM
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If it raises your comfort level, I'm using their 4340 H beams in a blown 383 with absolutely no issues. Following racecar's advice to you, I had them checked by a competent machine shop, I would with any critical component.
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Old 03-11-2008, 08:49 PM
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That does raise my comfort level a good bit, Thank you. I have a great machine guy recommended by both hotrod shops in town. I'm taking him the block and my crankshaft tomorrow. He has told me to bring my stock crankshaft in and hold off on ordering the scat9000. He seems to think that on a street motor that will not see above 6500 RPM a stock crank will be fine. What are any of your thoughts on this? The crankshaft looks good with no dings or anything and I removed it from the original motor w/ no journal blemishes to speak of.
Stock 400 SBC Crankshaft
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Old 03-11-2008, 09:12 PM
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Joe Sherman used to run the sh-- out of reworked Chevy 400 cranks.....and a lot higher than 6500. If your machinist knows his biddness, sounds like he does, then let him work his magic. He'll let you know if the crank is no good.
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Old 03-12-2008, 06:31 AM
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If your machinist knows his biddness, sounds like he does, then let him work his magic
That's what I'm tonkin 'bout...
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