Met up with an SRT-4...

CamaroKillZ28 · 02-28-2006, 11:28 PM

Yah man you at least have to let your powerband expand up to 5300rpms...i shift around there or a lil higher...6 is too high, you arent making enough power up there with a stock cam. Next time just let him have it....good luck and happy hunting!

**pewter02z** · 03-01-2006, 12:35 AM

You should take him if you start shifting atleast in the 5500+ range. I can imagine how far in rpms you are dropping shifting that early.

**ss~zoso~ss** · 03-01-2006, 03:26 AM

yea that is not the proper rpm range to race something that quick, that'd 'be fine if you were racing a civic or any kind of slower car

**mogs01gt** · 03-01-2006, 03:43 AM

wow talk about driver error. You should easily walk that neon when you pull the gears high in the power band.

**woodymaro** · 03-01-2006, 09:56 AM

no offence butDUDE SHIFT AT 6G'S AND STOP PUTTING IN 87 OCTANE!!!!

**gettin sideways** · 03-01-2006, 01:59 PM

wow, how can you shift at 4500max and think your gonna win? i dont mean any offense or anything but honestly...

**EE1983** · 03-01-2006, 02:49 PM

EDIT: Listen to these guys, shift at 6! Youll smoke his ass next time

CamaroKillZ28 · 03-01-2006, 04:08 PM

6 is too high....Im telling you that a stock cam doesnt make enough power at that rpm, most after market cams stop making power after 6000....thats just what I have read, but you def need to shift higher 5500 is a good solid shift

lee1rbc · 03-01-2006, 06:46 PM

If you had a better tach I would say shift at 6200rpms, but do to f-body tachs reading slow I would shift at 6000. My car stock was 291rwhp at 5400rpms. At 6200rpms I put down 275rwhp. At 4500rpms I put down 275rwhp. If you take the car up to 6100rpms you will nvr fall below 275rwhp. If you shift at 4500rpms you will nvr go above 275rwhp. 87 oct???? lol

**LS1Power06** · 03-01-2006, 06:54 PM

yeah definetly try shifting up around 6K. it will keep the revs up much higher in the torque band the next gear. SSmoke that SRT-4s ass and show him what an F-Bodies ass looks like!

RyAn

lee1rbc · 03-01-2006, 07:01 PM

Wow, I just did a little math and if You shifted from 4500rpms from 2nd to 3rd You would drop to around 3200rpms. That's about 170rwhp. I would love to see the look on your face the first time you shift 1st to 2nd at 6k. Just make sure Your not on a tight road with alot of parked cars.

CamaroKillZ28 · 03-01-2006, 09:11 PM

Originally Posted by lee1rbc

If you had a better tach I would say shift at 6200rpms, but do to f-body tachs reading slow I would shift at 6000. My car stock was 291rwhp at 5400rpms. At 6200rpms I put down 275rwhp. At 4500rpms I put down 275rwhp. If you take the car up to 6100rpms you will nvr fall below 275rwhp. If you shift at 4500rpms you will nvr go above 275rwhp. 87 oct???? lol

Wanna explain y you would shift so high when your losing horsepower...am i not clear on something, I know an a4 shifts at 5800!

**wzup1000** · 03-01-2006, 10:34 PM

Well I remember an earlier post about bending stock pushrods at over 4500 rpm, so I was doing the safest thing that I thought possible...

I cant remember exactly who posted it, but it was on ls1.com... anyways like i said i am pretty new to this car, but thanks for the input...I guess ill call that srt back out!!!

**LS666** · 03-02-2006, 01:27 AM

Would GM do that, I mean, really, put in POS pushrods like that? Shifting that low you never let your motor work. At that RPM it's just getting started and your cutting it off.

lee1rbc · 03-02-2006, 11:29 AM

OK this is why You shift at 6000rpms. For this explanation lets just say that when the car shifts it drops 2000rpms. Below is a reading of my car on the dyno.

3500rpms 210hp
3750rpms 225hp
4000rpms 245hp
4250rpms 260hp
4500rpms 275hp
4750rpms 285hp
5000rpms 295hp
5250rpms 305hp
5500rpms 305hp
5750rpms 300hp
6000rpms 295hp
6250rpms 285hp

Now my peak power is at 5500rpms, but if I shift at 5500 I will drop to 3500rpms (210hp). Now, If I dont shift until 6k I will start to loose hp but I will still be over 285hp. Also when I shift I will only drop to 4000rpms(245hp). Ideally if the valves didn't float at 6,300rpms I would shift at around 6400rpms. That would keep my power above 260hp.

CamaroKillZ28 · 03-02-2006, 12:04 PM

yah...hmm maybe ill start shifting a lil higher, I just didnt see it justified out like that before, thanx for the info...its good to know!

lee1rbc · 03-02-2006, 12:26 PM

Also when I had 3.42 installed I had my shift points changed to 6000rpms.

15yrs ago I had a 88 5.0 and I would shift at 4200rpms because thats what peak hp was. But then I let this ex drag racing mechanic who built AHRA pro stock motors in the 60s and 70s drive the car. He starts running up first gear 4k then 5k, then 5500rpms. I yell out, why aren't you shifting!?!? And he said, its still pulling.

**wzup1000** · 03-02-2006, 10:22 PM

Thanks for the info...

**mogs01gt** · 03-03-2006, 05:28 AM

Originally Posted by wzup1000

Well I remember an earlier post about bending stock pushrods at over 4500 rpm, so I was doing the safest thing that I thought possible...

I cant remember exactly who posted it, but it was on ls1.com... anyways like i said i am pretty new to this car, but thanks for the input...I guess ill call that srt back out!!!

that happens when you over rev, like missing a shift.

**Danger731** · 03-03-2006, 05:52 AM

too soon a shift, my power band starts to break 300 rwhp at 3800 rpm, at 4500 it's still climbing, give your car a chance.

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