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ls1 rev limit?

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Old Jul 9, 2010 | 02:50 AM
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Default ls1 rev limit?

right now i have a stock internal ls1 and i have a hypertech chip that i have set at 5800rmp and max if wanted is 6600rpm. what is the max this engine can safely rev too? i will be installing a cam shaft soon 1500-6800rpm its a 222/226 597 598 lift. so will i be able to spin 6800 with stock crank pistons rods etc?
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Old Jul 9, 2010 | 05:01 AM
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Stock bottom end yes, but you will need valvesprings, and should get titanium locks and keepers
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Old Jul 9, 2010 | 05:12 AM
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Originally Posted by BFarrier
right now i have a stock internal ls1 and i have a hypertech chip that i have set at 5800rmp and max if wanted is 6600rpm. what is the max this engine can safely rev too? i will be installing a cam shaft soon 1500-6800rpm its a 222/226 597 598 lift. so will i be able to spin 6800 with stock crank pistons rods etc?
I believe the stock motor quits making power at 5700rpm. Yes the stock internals can handle 6800.
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Old Jul 9, 2010 | 06:24 AM
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I bet with the new cam, your peak HP will be more like 6200-6400. When you get tuned, check your dyno chart for peak HP and shift accordingly. The crank and rods in these LS1 engines are tough. I'd say the rod bolts are the weak link, but they should handle maybe up to 6800 rpm.
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Old Jul 9, 2010 | 09:27 AM
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Stock with nothing done like completely stock I would not do more than stock rev limiter. The stock equipment is very week and you will experience valve float at around 6500 rpm.
Once you change your cam, springs pr and so on if you do not change your rod bolts I would stick to no more than 6500 rpm. If you change your rod bolts then 7K is about your limit. Like stated prior the cam you have will peak around 6200 to 6400 and then start to fall off.
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Old Jul 9, 2010 | 09:35 AM
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Originally Posted by tg580
I believe the stock motor quits making power at 5700rpm. Yes the stock internals can handle 6800.
not prior to 2002 you spin a 2001 and older that high and you will be taking ur motor home with ur internals in a bag.
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Old Jul 9, 2010 | 12:04 PM
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yeah i will be getting dual valve springs as well and now possibly rod bolts we have a 360ci sprint car spec engine my buddy built in his 70 1/2 camaro and rev limit is 8k that sucker screams and is one of the most crisp engines i have ever heard il have to get a video of that sucker a post if for you all its pretty amazing.
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Old Jul 9, 2010 | 12:04 PM
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so stock ls1 with the cam i want dont spin over 6500 to be safe with stock rod bolts?
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Old Jul 9, 2010 | 12:06 PM
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with the stock cam i wouldnt spin over 6k there is no point
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Old Jul 9, 2010 | 06:43 PM
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upgraded springs, p rods, and lifters...

7400 here
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Old Jul 9, 2010 | 06:57 PM
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I shift at 6950...limiter set at 7200 ...whole valvetrain is upgraded but totally stock bottom.
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Old Jul 9, 2010 | 07:01 PM
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Originally Posted by 02*C5
not prior to 2002 you spin a 2001 and older that high and you will be taking ur motor home with ur internals in a bag.


If you found them all!
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Old Jul 9, 2010 | 07:09 PM
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I plan on shifting my 99 stock bottom end at 7k. Not worried about it. Well, not really..
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Old Jul 9, 2010 | 09:09 PM
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Originally Posted by BFarrier
so stock ls1 with the cam i want dont spin over 6500 to be safe with stock rod bolts?
I would not but you can do what ever you want I have a 7K rev limiter shifting at 6800 and my tps/ws set at 6600 she has 100K+ miles on the clock and still running strong. Just had a 2.3 KB Built motor Lightning for a midnight snack the other day.
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Old Jul 9, 2010 | 09:11 PM
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Originally Posted by Paint_It_Black
I plan on shifting my 99 stock bottom end at 7k. Not worried about it. Well, not really..
You haven't upgraded the rod bolts yet?
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Old Jul 10, 2010 | 12:46 PM
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Originally Posted by 02*C5
You haven't upgraded the rod bolts yet?
Nope. I'll do that with the K-Member. Hopefully it takes a couple hundred 7k shifts before it decides to scatter
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Old Jul 10, 2010 | 02:00 PM
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Originally Posted by Paint_It_Black
Nope. I'll do that with the K-Member. Hopefully it takes a couple hundred 7k shifts before it decides to scatter
LOL good luck I know you've invested more than just money into that car.
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Old Jul 10, 2010 | 06:11 PM
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Originally Posted by 02*C5
LOL good luck I know you've invested more than just money into that car.
I do, I have a lot in it, and the LEAST of which is money!

I was just working with a drag sim program and lowering the shifts to 6700 instead of 7000 is going to cost me .13 and 1 mph, so I will probably live with it there as I was shifting at 6500-6600 for 2 years with no problems. Going to 4.10's will pick that right back up though.
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Old Jul 10, 2010 | 10:13 PM
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Originally Posted by Paint_It_Black
I do, I have a lot in it, and the LEAST of which is money!

I was just working with a drag sim program and lowering the shifts to 6700 instead of 7000 is going to cost me .13 and 1 mph, so I will probably live with it there as I was shifting at 6500-6600 for 2 years with no problems. Going to 4.10's will pick that right back up though.
it's all in the converter for a4 cars...if m6 I agree gears help...

shift that bitch in the sweet spot...

**** I pulled 1.38 60ft with a 100% stock 10 bolt...oh yeah with 3.23 gears...

I would be more worried about getting some bad e85 vs shifting at 7k...
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