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What RPM should I be shifting at?

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Old 11-15-2010, 02:03 AM
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Default What RPM should I be shifting at?

Ok so I just ordered a Harlan shift light from frost for only $55 bucks so now I need to know what is a good shift point for my 1998 Camaro Z28. It is a all M6 bolton car mods are as follows:

K&N FIPK
Ported TB
LS6 Intake
UD Pulley
Free Mods
LT Headers
ORY
Custom Flowmaster catback
Mail order tune from FROST

What shift points are majority of you shifting at with similar mods?
Old 11-15-2010, 02:08 AM
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i shift at 6800. u will get a lot of different answers with this. 7000 is about as far as you want to go if ya feel lucky until you get stronger rod bolts lol. there are people who shift at 7000 or a little more and havent had problems, but thats really pushing it imo.
Old 11-15-2010, 02:14 AM
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damn correct me if I'm wrong but that seems a little high for a stock LS1, but like I said correct me if I'm wrong Kind of a newbie to the LS1 engines.
Old 11-15-2010, 02:20 AM
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thats what i thought at first. at first, i would shift around 6500. but everyone i know runs their cars to around 6800-7000. if your car has high mileage, you might stay a little lower, but otherwise it'll handle it
Old 11-15-2010, 02:26 AM
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hmmm, any other opinions.
Old 11-15-2010, 02:26 AM
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stock springs cant handle that up grade them and push rods then 6700 in the max with stock rod bolts
Old 11-15-2010, 02:28 AM
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Originally Posted by Cold06
stock springs cant handle that up grade them and push rods then 6700 in the max with stock rod bolts
Kind of what I was thinking.
Old 11-15-2010, 09:09 AM
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Originally Posted by 1sicss
hmmm, any other opinions.
Yeah I got one. Anyone who tells you to spin your stock motor to 7k is a fool. A damn fool. The stock valvetrain is barely adequate for stock rpms, let alone 7k, and the stock cam and everything else about the motor isn't designed to make power that high anyway. Also, are the so called advisers gonna buy you a new shortblock when you sling a rod or spin a bearing. Yeah right.

Listen to the post below.

Originally Posted by Cold06
stock springs cant handle that up grade them and push rods then 6700 in the max with stock rod bolts
Old 11-15-2010, 09:56 AM
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Originally Posted by ls6firebird
i shift at 6800. u will get a lot of different answers with this. 7000 is about as far as you want to go if ya feel lucky until you get stronger rod bolts lol. there are people who shift at 7000 or a little more and havent had problems, but thats really pushing it imo.
Please do not give advice for cammed cars to those asking about stock cars...his stock cam is nothing like your MS4 cam with upgraded pushrods and valve springs.

He has a 98...I wouldn't spin past 6500rpm period with those rod bolts.

IIRC peak rwhp for stock cam is around 5600-5800. You want to shift just a little after peak. Keep it well under 6500 for sure.

Sure someone will chime in, could also search I'm sure it's been asked before.

Last edited by thunderstruck507; 11-15-2010 at 10:02 AM.
Old 11-15-2010, 10:06 AM
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I didnt know K&N made a FIPK for LS1 F bodys. Anyways, I dont see any benefit to shift any higher than 6500 on a stock valvetrain.
Old 11-15-2010, 11:31 AM
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Stock valvetrain I would say even lower than everybody else, 6100-6200rpm. There's no power any higher with the stock cam.
Old 11-15-2010, 03:21 PM
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Originally Posted by thunderstruck507
Please do not give advice for cammed cars to those asking about stock cars...his stock cam is nothing like your MS4 cam with upgraded pushrods and valve springs.

He has a 98...I wouldn't spin past 6500rpm period with those rod bolts.

IIRC peak rwhp for stock cam is around 5600-5800. You want to shift just a little after peak. Keep it well under 6500 for sure.

Sure someone will chime in, could also search I'm sure it's been asked before.
Do the later LS1's have different rod bolts? Just asking
Old 11-15-2010, 03:53 PM
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Originally Posted by GIVE EM' THE BIRD
Do the later LS1's have different rod bolts? Just asking
yes


Before th cam i was shifting my car at 6K on th nose
Old 11-15-2010, 03:56 PM
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Originally Posted by GIVE EM' THE BIRD
Do the later LS1's have different rod bolts? Just asking
I don't believe so, but someone else may chime in that knows better.

As for the original question. I've got to agree with the others that have stated to keep it below 6500. Myself, with the stock valvetrain, would set the limiter to 6400, and shift points at 6100. There's no sense is risking serious damage. If you can't pay to fix it, then don't risk it. Stay safe, and enjoy the car.

Good luck.

Brad
Old 11-15-2010, 04:21 PM
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Originally Posted by GIVE EM' THE BIRD
Do the later LS1's have different rod bolts? Just asking
Absolutely yes they do
Old 11-15-2010, 05:21 PM
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Originally Posted by camz28arro
stock valvetrain i would say even lower than everybody else, 6100-6200rpm. There's no power any higher with the stock cam.
yes what he said
Old 11-15-2010, 05:22 PM
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Originally Posted by 01ssreda4
Absolutely yes they do
What about them is different? Just stronger bolts, or a different design? The car I'm Gettin is an 01, I'm assuming it would have the better ones... So if I got a medium cam in the future and wants to spin it to 6600 with the proper valvetrain would the bottom end hold up fairly well? I use to spin my LT1 to about 6400 with just a little spring work and it held up great. Just curious. I've never seen the inside of an LS1 in person. I formerly was a Toyota mechanic.
Old 11-15-2010, 06:10 PM
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Yes the 01 have the newer style bolts.
Old 11-15-2010, 06:54 PM
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Originally Posted by camz28arro
Stock valvetrain I would say even lower than everybody else, 6100-6200rpm. There's no power any higher with the stock cam.
This would be max because with your stock cam and and LS1 intake you are already past peak HP.

01-02's have the stronger rodbolts that are not as prone to stretching causing a spun bearing. MOST of the time these are fine to 7K. FWIW I spun my old H/C/I 98 346 to 6500 for 2 1/2 years before a broken #7 ringland did that motor in...
Old 11-16-2010, 02:30 AM
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let us know what you think of that shift light. I want one, but i keep spending my money on everything the previous owner touched.


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