Generation III Internal Engine 1997-2006 LS1 | LS6
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how high to spin???

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Old 09-19-2006, 08:05 PM
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Default how high to spin???

mods are ms4, prc dual's, hardend pushrods, longtubes, ect... ls1 intake... cai... m6

how high should i spin the motor (Set rev-limiter)???
Old 09-19-2006, 08:51 PM
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According to TSP's website that cam peaks at 6400 rpm. Add another 400 rpm carry on before your shift point and then set the rev limiter 200 rpm above the shift point. So 7000 rpm.

At least that's how I always I figure it.
Old 09-19-2006, 08:58 PM
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LS1 intake?!?

That's going to kill your power up top anyways. If you had a 90/90, then go ahead and spin it to 7000 while gaining 40 hp.
Old 09-19-2006, 09:10 PM
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when i put my heads on a year or so ago, and had my car tuned at W2W, they spun it to 6,850.

Take into account that i also have a '98 and they have the shitty rod bolts....
Old 09-20-2006, 10:06 AM
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i spoke with my tuner and he ok'd 7k..

my car is being tuned today maybe as i type... should have my car back around 5pm... with a dyno sheet.... will post it if i have time today
Old 09-20-2006, 10:07 AM
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and yes i know im not going to make the best power cause i still have a ls1 intake... but intake/injectors/fuelpump are next on my mod list...
Old 09-20-2006, 10:57 AM
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https://ls1tech.com/forums/generation-iii-internal-engine/579005-t-rex-4400-stall-question.html

It is in there
Old 09-20-2006, 01:46 PM
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good lord. i hate spinning an LS1 up to 7k. that seems crazy. i set my shift like at 6200.
My limiter is at 6500. that might not be the right way to do it, but i value my bearings...
Old 09-20-2006, 04:25 PM
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Originally Posted by 99_Z_155
good lord. i hate spinning an LS1 up to 7k. that seems crazy. i set my shift like at 6200.
My limiter is at 6500. that might not be the right way to do it, but i value my bearings...
lol but my cam makes power too 6600rpm... motors can be rebuilt...
Old 09-20-2006, 04:32 PM
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motors might can be rebuilt, but that money will never be back in your wallet.
Old 09-20-2006, 04:36 PM
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Originally Posted by bjamick
motors might can be rebuilt, but that money will never be back in your wallet.
if you find the right races.... it might be...




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