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Rev limit question for all Ecotecs!

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Old 08-13-2012, 01:34 AM
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Rev limit question for all Ecotecs!
What's the highest I can rev with stock balance shafts and stock crank?I have forged pistons,eagle H beams,ARP head studs/rod bolts/ ZZP 82# valve springs and retainers.Stock cam.Just curious what it can handle with that hardware.
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Old 08-13-2012, 06:55 AM
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bump
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Old 08-13-2012, 07:33 AM
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7k isnt enough for u

u could probably hit 7400, since u have engine work
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Old 08-13-2012, 11:25 AM
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I'm already there when I was on stock internals and now.
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Old 08-13-2012, 11:52 AM
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GM says 7500 or higher and you should run neutral balance shafts. They also say you should swap valve springs at 7200 though so take it for what its worth lol
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Old 08-13-2012, 11:59 AM
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ouch so no 8 grand on stock internals? lol
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Old 08-13-2012, 12:14 PM
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My rev limit was set up to 7400......
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Old 08-13-2012, 12:16 PM
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Do a Nuetral Balance Shaft or a Dalance Shaft Delete and you can go past 7500.
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Old 08-13-2012, 12:25 PM
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Im going up to 7600 this week.Im on ZZP 82# valve springs already.
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Old 08-13-2012, 12:30 PM
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We carry 94# Super Tech Springs if you need more
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Old 08-13-2012, 12:33 PM
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LolI think the 82#ers are good enough and they are brand new ....well 2,000 miles lol
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Old 08-15-2012, 12:27 AM
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Why you wanna rev so high anyway? Lol m62 isn't exactly known for being efficient that far up top
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Old 08-15-2012, 12:56 AM
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something im testing out.
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Old 08-15-2012, 02:10 AM
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Originally Posted by 1LowLS
something im testing out.
Do work!
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Old 08-15-2012, 02:44 AM
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5million
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Old 08-15-2012, 02:50 AM
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im built and have 82# valve springs and im only going to spin to like 7500. I dont have NBS.

PS, Im an big turbo LNF
Last edited by FrossB; 08-15-2012 at 02:50 AM. Reason: Automerged Doublepost
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Old 08-15-2012, 04:58 AM
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I'm a small blower 2.2L semi built and studded.Just seeing if the extra rpm will help keep me in 3rd through out the 1/4 mile instead of hitting 4th at the very end.And I'm also seeing if the higher rpm will keep me more in the powerband.I have a ported head as well.If not then I will shift earlier.Just a test until it hits the dyno
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Old 08-15-2012, 05:17 PM
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FYI your blower RPM will be ~17K at 7600 with the 2.9
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Old 08-15-2012, 10:44 PM
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Pretty sure 7500 is the magic number without doing balance shafts.
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Old 08-15-2012, 10:45 PM
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I take mine to 8 but i got NBS..id say 7400ish without
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Old 08-16-2012, 06:21 AM
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Originally Posted by SS1
ouch so no 8 grand on stock internals? lol
i did that for 2 month

1-2 gear it is fine 3 is to limit


the trouble ll be more the synchros than the valvetrain
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Old 08-16-2012, 07:24 AM
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My valvetrain should be good up to 7600.Im at about 11 psi.
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Old 08-16-2012, 12:24 PM
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Originally Posted by huckernage
i did that for 2 month

1-2 gear it is fine 3 is to limit


the trouble ll be more the synchros than the valvetrain
Que?
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Old 08-16-2012, 12:39 PM
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You have to learn french to understand that lol.He's from french canadia
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Old 08-16-2012, 12:43 PM
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aye
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