450 rwhp mark

[chaseevans72089]

Ok guys.. I need advise... I have searched and searched and read many post about n/a or FI and everyone got off subject and annoying. I am very aware of the on3 turbo kit and I love the kit and the price. I also have read up on all of the blower kits.
So I know if I decide to go FI i will either go with on3 turbo kit or frpp 550 blower kit. My question is that my car is an 09 GT/CS with 55,000 on it and when i get the money to do all of this I will probably have close to 80k miles on it. So If i go with either of these kits am I putting myself at a very high risk ruining my stock block or is the risk the same no matter the miles. I am very aware that nobody on this forum has blown there stock engine with frpp tune on the blower. And i have read of one guy blowing his with the on3 kit. So i know both are reliable if properly tuned. I am in the birmingham alabama area and i dont know of any good tuners but i will find one before i start building. So please give me imputs on if daily driving these kits with these high miles is dangerous. I really just want 450whp to be same on my block. Keep in mind that I haved searched so no bashing please

 

[JoshK]

1. This belongs in Chit Chat

2. Made about 420 rwhp(mustang dyno) with the on3 at 6psi on my car.

3. Datalogging and email tuning is easy.

 

[johnnyv8]

I just did an On3 install (make sure you have 07+coolant setup) with 90k on the clock and I'm waiting for a dyno tune. I"ve done a lot of research and talk to a lots of people about the "safe" limit. It seems that 440-460 is a safe limit, but imo, it's still a ticking bomb. I will be building another motor and hopefully will have it done in a year. The most recent guy to blown his motor with the on3 kit I believe was nasty08 and he hand the kit on there for I believe 10k and end up pushing 490hp.

 

[chaseevans72089]

sorry im a noob! but thanks

I just did an On3 install (make sure you have 07+coolant setup) with 90k on the clock and I'm waiting for a dyno tune. I"ve done a lot of research and talk to a lots of people about the "safe" limit. It seems that 440-460 is a safe limit, but imo, it's still a ticking bomb. I will be building another motor and hopefully will have it done in a year. The most recent guy to blown his motor with the on3 kit I believe was nasty08 and he hand the kit on there for I believe 10k and end up pushing 490hp.

yea i believe he is the one that i was reading about. Im going to try to keep it around 450 and build another engine in the process also. Thanks

 

[stkjock]

MOVED

also

I advise you to seek advice..... so we can give you proper input

keep it under 450 and dont rev it to 6500+ you should be ok

 

[808muscle]

Email tune with datalogging is fine. Its what I have done with my m90 setup. When going FI there will always be risks whether the motor is new or one with some miles on it.

 

[AbdullaGT500]

There's no way to determine what the limit is, many people have blown the engine with 400 whp. It's a combination of tune, fuel, weather, rpm, etc that can cause it to blow. Keep the RPM below 6000, and make sure you have a solid tune and it should last a little while. If you don't want to rebuild it, then don't put a blower on.

 

[Swarzkopf]

Keep the RPM below 6000

I disagree....keeping it under 6500, sure, but at 6000 RPM it doesn't seem like the risk outweighs the reward.

Personally, I've been spinning my blown stock 3V to 6300 on the street and 6500 at the track all summer and haven't had any issues (knock on wood).

 

[Riptide]

Kenne Bell at least is pretty clear in their documentation. 6500 is a no-no according to them and overspinning it is one of the easiest ways you can break the stock rods.

That said I totally agree - people get away with it all the time. IMO there is a higher risk of failure past 6000 but it's questionable just how much higher the risk is.

 

[fdjizm]

Just remember than 450whp on a turbo is not the same as 450whp on a supercharger.
It's the torque that will kill your stock stuff.

 

[GT33]

On my stock motor on 7psi made 450rwhp. And I bent a few rods my first outing at the track. I had numerous of street runs and racing. I launched off the 2step and it just didn't take it anymore lol.So IMO its 50/50.

 

[benjytps]

If you do not have the funds to rebuild/replace/repair your engine and/or other components then do not boost it to 450 HP. Throw 6-8 lbs on it with a TVS and enjoy for a long , long , long life!

Once you start pushing the power you need to have the means to maintain those power levels.You will break parts if you use the 450 hp you plan on making.

 

[Riptide]

Marc S made a ton of power on his stock shortblock for years with lots of track use and it never blew on him.

But I've also heard of stock engines blowing up on dynos with less than 400whp.

To some degree it's a gamble. You get lucky and have a stronger engine or you get unlucky and end up with one of the weaker ones from the factory.

 

[Swarzkopf]

It sounds noobish, but I think it's worth nothing that there are two separate routes to failures here:

1. The stock 3V just isn't strong enough to withstand much more than 450-500 RWHP. At this point and beyond the rods become more and more likely to fail.

2. A bad tune combined with forced induction can take the motor out well below the "horsepower limit". If it's running lean and knocking at 390 WHP, the motor is more likely to take a dump then if it's dialed in at 440 WHP.

Use a safe, conservative tune with power levels below the recognized limits and you'll probably get thousands and thousands of miles out of it.

 

[Riptide]

One reason I'm sticking with the KB tune even if I could squeeze more out of it otherwise. Should be a pretty safe tune and I'm hoping to make this stock motor last for a few years before I build it or sell it for something else.

 

[fdjizm]

I think some people get the false hope that the 3v holds like 550whp, because they hear of one dynoing at that, yet what they don't get to find out is that the person almost never races the car lol. (obviously it's going to be OK when it never sees 550whp again ever.)

 

[Vapour Trails]

HP limit thread # 1,387

It's all in the toon, brah

Seriously though, if you are looking for reliability, the FRPP kit is the way to go.

 

[chaseevans72089]

thanks guys. I have read up and decided I am going to buy a forge rotating assy. Use my block and then go with the on3 kit. For the price of both is around the same as getting the blower plus i push it up to about 15psi and hopefully at the 550 mark. Now im going to be trying to find a good tuner around birmingham, alabama. If anybody knows of ones that are good or ones to stay away from then please chime in

 

[AbdullaGT500]

I disagree....keeping it under 6500, sure, but at 6000 RPM it doesn't seem like the risk outweighs the reward.

Personally, I've been spinning my blown stock 3V to 6300 on the street and 6500 at the track all summer and haven't had any issues (knock on wood).

With a Centri, the higher rpm the more boost you're making, so most people will take it higher with a centri. As opposed to a blower, which makes full boost instantly. I have my Shift light set to 5800 so I won't take it too high up with my whipple.

 

[burkem]

James Henson is a good tuner from what Ive heard. Ive had my car on his dyno but he didnt tune my car. He has tuned some very high hp mustangs though.
http://www.hensonperformance.com/