What RPM you're shifting at

[calebdnehus]

Hi all, quick question. I have been reading about how the computer in the S550 can process well in the 7000 rpm's range. I just wanted to know what everyone considers "the MAX safe" rpm for stock internals? What are you shifting at and what mods do you have? I've got a VMP going on and I'm trying to decide where I want to have my WOT shift points at. Last car I had was a 16 and I didnt go much past 6800-7000 on an AED tune with full exhaust and E85.

 

[Shaun@AED]

Hit 8972RPM the other day spinning at the track. Data logged it, no valve float, no issues with VCT, no spark issues, etc.

 

[PaxtonShelby]

Holy schniekeys!

 

[barstowpo]

8000

 

[calebdnehus]

Hit 8972RPM the other day spinning at the track. Data logged it, no valve float, no issues with VCT, no spark issues, etc.

Good lord. I had to read that twice just to make sure I saw the numbers right. Thats a shit ton of RPM right there. lol

8000

I guess I've got some room over 7000 then from what yall've said so far.

 

[calebdnehus]

@barstowpo, do you run yours to 8000 on a regular basis? Also, are you still making power all the way to 8000 or does the dyno curve tail off a bit by then?

 

[barstowpo]

Regularly 8000. Pulls to the rev limiter at 8250 according to the butt dyno. My rear tires lasted 10,000 miles though.

 

[whatsup62]

7400

 

[blownbrainmustang]

I was shifting just prior to 8k on a CJ setup regularly


Sent from my iPhone using svtperformance.com

 

[calebdnehus]

Regularly 8000. Pulls to the rev limiter at 8250 according to the butt dyno. My rear tires lasted 10,000 miles though.

I'd say thats a hell of a fun car when your tires only last for 10k. Haha

 

[calebdnehus]

7400

I was shifting just prior to 8k on a CJ setup regularly


Sent from my iPhone using svtperformance.com

Well I shouldnt have problem going into the 7's then. I was wary of running up past 6800-7000 with the blower on it but the general consensus here seems to be they can handle it no problem.

 

[blownbrainmustang]

Well I shouldnt have problem going into the 7's then. I was wary of running up past 6800-7000 with the blower on it but the general consensus here seems to be they can handle it no problem.

I'm using a roush based blower and Shaun has me datalog to 7500rpm. I'm confident that he wouldn't have me do it if it wasn't safe

 

[calebdnehus]

I'm using a roush based blower and Shaun has me datalog to 7500rpm. I'm confident that he wouldn't have me do it if it wasn't safe

Shoot, I've had Shaun tune my last 2 cars. I'd run with anything he's told just because of how confident I am with his work. I plan on having him tune this VMP kit once I recover a little from buying it. Saw the other day beefcake having a sale on the same kit I bought from the VMP site. Would have saved me $500 if I waited until this weekend to buy from beefcake

 

[blownbrainmustang]

Shoot, I've had Shaun tune my last 2 cars. I'd run with anything he's told just because of how confident I am with his work. I plan on having him tune this VMP kit once I recover a little from buying it. Saw the other day beefcake having a sale on the same kit I bought from the VMP site. Would have saved me $500 if I waited until this weekend to buy from beefcake

Ouch! Even vmp is doing 7% off their whole site this weekend. Bad timing

 

[calebdnehus]

Dang right bad timing, thats the story of my life though lol. Cant fret on it now I guess, I would have bought it either way anyhow