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Old 12-17-2013, 02:10 PM   #1
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revving concerns

is it safe to rev a 3.7 to 7600 rpm on stock internals?
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Old 12-17-2013, 03:04 PM   #2
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I think redline is at 7K for the V6.
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Old 12-17-2013, 03:05 PM   #3
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I wouldnt think that would be too good for your engine
Do you have a tuner ?
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Old 12-17-2013, 03:11 PM   #4
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Why do you need to rev that high anyways?

I believe the v6 power band starts to drop at 6k-6.5k
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Old 12-17-2013, 03:13 PM   #5
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I have a tuner and i set my rev limit on neutral at 4900 just so it can get loud enough and when the rpms drop theres not so much crackling
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Old 12-17-2013, 03:21 PM   #6
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You should be safe on a n/a engine, considering I've had my redline set at 7500 rpm for over 20k miles and it's been fine.

But with your mods I would be weary of revving it that high. Do some datalogs and see what your a/f ratio looks like at those RPMs.

On a side note, if your revving your car to 7600 rpm with a supercharger and nitrous, I should be perfectly fine revving my car to 7500 rpm with just minor bolt ons.

---------- Post added at 02:21 PM ---------- Previous post was at 02:19 PM ----------

Quote:
Originally Posted by xhgwx View Post
Why do you need to rev that high anyways? I believe the v6 power band starts to drop at 6k-6.5k
Peak power on the v6 is at 6500 RPM. It holds within 10 hp of peak power all the way to 7500 rpm. Revving that high is worth it when racing so that you can take advantage of the hp up top from 6.5-7.5k. Even though it's not building more power, it's still making more power than if you were to upshift at 6500 rpm and land in the 4500 rpm zone.
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Old 12-17-2013, 03:23 PM   #7
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I'm fully bolted on with a procharger but I just got an updated Dyno tune. and I noticed when I floor it or launch it the rpms go the whole way to 7600. at one point I saw it go to 8000. I'm nt sure if this is safe.
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Old 12-17-2013, 03:40 PM   #8
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Revving

Could you explain DATALOGS. I just got a tuner but not installed (car in Storage) but understand that is part of tuner. How do you get it (DATALOGS) and what will it show.


Thanks.............
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Old 12-17-2013, 03:47 PM   #9
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Quote:
Originally Posted by 13 stang22 View Post
I'm fully bolted on with a procharger but I just got an updated Dyno tune. and I noticed when I floor it or launch it the rpms go the whole way to 7600. at one point I saw it go to 8000. I'm nt sure if this is safe.
Not safe. Your tuner forgot to set a rev limit so there is no rev limit. 8000 is to much for a 3.7. 7500 rpm would be the safe limit to me
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Old 12-17-2013, 04:25 PM   #10
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okay thanks. I knew something was wrong.
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Old 12-18-2013, 12:31 PM   #11
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Since he forgot to do that I would make sure he did everything right so you don't end up with a blown engine
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Old 12-18-2013, 12:53 PM   #12
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I know. I have an appointment tomorrow. it was weird cause on a roll is floor it and my engine would rev without going any faster for a few seconds and then shoot off like a bad out of hell. it feels cool but wrong at the same time.
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Old 12-18-2013, 01:07 PM   #13
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The tune is definitely messed up In that case. Don't beat on the car until you re tune it.
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Old 12-18-2013, 01:17 PM   #14
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do you think there has been any damage to my engine since this tune has been on? I've gunned it quite a bit.
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Old 12-18-2013, 01:48 PM   #15
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Quote:
Originally Posted by 13 stang22 View Post
do you think there has been any damage to my engine since this tune has been on? I've gunned it quite a bit.
Lol well stop gunning it. Catastrophic damage hasn't occurred yet so I say you should be in the clear. If it didn't pop yet, it's not going to pop now from what you did in the past. Plus it seems like the tuner got the tune dialed in pretty well if you revved the car out to 8k with a procharger and didn't mess anything up.

Wait for the retune to gun it, make sure the air to fuel ratio is spot on. It sounds like the tuner just forgot to set some basic things, but he has the rest of the tune pretty well down if your revvin to 8k and nothing has happened so far.

Does it even still have power from 7500-8000 rpm? I would think the heads would choke out from the airflow from your supercharger.
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Old 12-18-2013, 01:50 PM   #16
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I honestly can't tell. when it revvs that high I feel more of a kick - like more of a seat of the pants feeling. It feels similar to my truck which had a little over 800 hp. the acceleration obviously isn't close but the feeling is if that makes sense
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Old 12-18-2013, 01:53 PM   #17
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Lowkey your making me want to set my rev limit to 8k if you have yours there with a supercharger and it's holding up good.

I remember you have the 4.10 right? What does your 1st, 2nd, and 3rd gear go to @7500 rpm? I'm putting in 4.10's this week.
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Old 12-18-2013, 01:55 PM   #18
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what do you mean?
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Old 12-18-2013, 02:45 PM   #19
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Quote:
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what do you mean?
Like what mph does each gear go to? Like 1st goes to 30 mph et cetera
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