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how do you know if you have the OEM stronger rod bolts

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Old 06-21-2012, 08:31 AM
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Default how do you know if you have the OEM stronger rod bolts

ok i was told that some year 2000 cars have stronger rod bolts than the 98 and 99. how would i tell which i have?
Old 06-21-2012, 11:36 AM
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I don't think it really matters. If you "need" stronger rod bolts, you might as well swap them out for ARP...I'm skeptical about Katech.
Old 06-21-2012, 05:43 PM
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Originally Posted by badazz81z28
I don't think it really matters. If you "need" stronger rod bolts, you might as well swap them out for ARP...I'm skeptical about Katech.
ARP needs rod resizing, Katech are same design as stock but higher tensile strength.
Old 06-21-2012, 07:05 PM
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Originally Posted by badazz81z28
I don't think it really matters. If you "need" stronger rod bolts, you might as well swap them out for ARP...I'm skeptical about Katech.
ive had katechs in mine for bout 5 years now.
Old 06-21-2012, 07:12 PM
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Originally Posted by john563
ive had katechs in mine for bout 5 years now.
Yes, ARP bolts require re-sizing, Thats why I wonder about Katech. How do they provide a stronger bolt (better clamping), would require more stretch because of higher tensile, yet don't require resizing?

Doesnt make sense to me.
Old 06-21-2012, 10:00 PM
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To answer You're question the first design bolts have a smooth straight shaft that is a little narrower than the second design bolts and the first design bolts use an insert that goes into the rod and they are a little longer . The second design bolts are a little fatter with what looks a little similar to the Wave-Lock ARP bolts on the shaft and they are a little shorter overall and the threads are a little shorter than the threads on the first design . Personally I kinda like the ARP bolts because they not only are stronger but they are longer going all the way into the threads on the rod making the rod a little stronger at the big end . But the stock bolts are good safely to between 400-450 whp and 6200rpm's . Oh ya the first design bolts the diameter of the shaft is a little smaller than the threads and the second design the shaft is the same diameter as the threads .
Old 06-21-2012, 10:43 PM
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Originally Posted by chrisfrost
To answer You're question the first design bolts have a smooth straight shaft that is a little narrower than the second design bolts and the first design bolts use an insert that goes into the rod and they are a little longer . The second design bolts are a little fatter with what looks a little similar to the Wave-Lock ARP bolts on the shaft and they are a little shorter overall and the threads are a little shorter than the threads on the first design . Personally I kinda like the ARP bolts because they not only are stronger but they are longer going all the way into the threads on the rod making the rod a little stronger at the big end . But the stock bolts are good safely to between 400-450 whp and 6200rpm's . Oh ya the first design bolts the diameter of the shaft is a little smaller than the threads and the second design the shaft is the same diameter as the threads .
Do you happen to have any pics?
Old 06-21-2012, 10:46 PM
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I have always doubted that there is any real difference with the stock rod bolts from year to year. I bought my 98 Z28 with 71,000 miles, went through 3 different cams and bolt ons, and cranked it to 6800 with the last two cams for over 40,000 miles, and it blew a head gasket at 147,000 miles...bottom end was solid!
Old 06-22-2012, 06:24 PM
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Only the 01+ cars have the stronger rod bolts because of the C5 Z06 having a higher redline and rev limiter (6750) while still having warranties to honor.

That said I tend to agree with moe above. Shoot there are 2 bolt LT1 guys who have been spinning their shortblocks to almost 7000, and they hold up for a reasonable amount of time. If those can, any LS1 certainly can survive 6800 just fine! I'd worry more about a good tune.

Jason
Old 06-23-2012, 08:19 AM
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My LQ4 in my Camaro still has the stock bottom end, including hardware. I spin it to 6800 regularly. Hasn't missed a beat yet, however, mine is a '07 model.
Old 06-23-2012, 02:45 PM
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something not to worry about. you want some good rod bolts, buy Katech.
Old 06-23-2012, 09:42 PM
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who sells katech?

i dont see them on summit-- and i noticed on the ws6 page they sell ARP rod bolts..

ARP are $150 how much are the katech?
Old 06-24-2012, 05:02 PM
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Katech is a sponsor on here...they sell Katech rod bolts.
Old 06-24-2012, 05:55 PM
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http://store.katechengines.com/conne...bolts-p25.aspx
Old 06-25-2012, 12:53 AM
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thanks-- now to decide which one to buy..



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