My setup is a 331 with tfs stage 2 cam, tea ported 205cc tfs heads, track heat tfs intake and a old school v-7 y trim vortech. The car made 480hp on the dyno at 5000 rpm at 10lbs of boost. We had to shut it off then bc it was running out of fuel, so I need 60lb injectors. I wanted to make a little more power then that, my question is do yall think its possible that I will make another 50 hp with the extra 1000 rpm once I get the fuel straitened out? I dont want to rap this motor higher then 6000rpm.
low on power
- Thread starter mkhalil83
- Start date
1, person who selected the cam and helped pick out the setup should be able to answer these questions.
2, the person doing the tune at the dyno should be able to give some imput as to how much hp was left on the table.
3, what's the goal? Racing dyno's or racing on a track. If you are going to race, simple hp doesn't always = fast track time. Unless you're just looking for hp bragging rights.
2, the person doing the tune at the dyno should be able to give some imput as to how much hp was left on the table.
3, what's the goal? Racing dyno's or racing on a track. If you are going to race, simple hp doesn't always = fast track time. Unless you're just looking for hp bragging rights.
Correct, dyno numbers dont really mean squat, hot rod did an article where they went to multiple dynos on the same day and got different results from each one.
Also, forgot to ask before, what fuel system are you running?
Don't forget transmision. Auto's tend to show lower hp numbers.
PS, You could through up the dyno readings just for fun. Might be helpful.
I am running 42 lb injectors and a 255 in the tank. This is a budget build and I am going to be tuning it myself with a moates quarter horse and a innovative lc1 wide-band. The cam is a off the self tfs stage 2 cam I had laying around. I know this cam isn't optimal for my setup but the funds were low at the time. I just figured with the heads I got on it (which flow over 300 cfm) would have made a little bit more power. I am thinking the blower I have is a little more peaky than your avg s or t trim so mybe I will make it up on the top end. I want to go a high 10 in a quarter thats my goal. I am not a dyno racer, but hey the more power the better.
Ok, now we have a goal. For everything you put in that motor, a custom cam doesn't cost much (reletive to all the other costs) and could really bring alot out of it. Plus with a custom cam you should get a few recommendations like the fuel system or whatever to get the most out of what you have. Not the place to skimp.
Also, there is soo much more to making 10 seconds than the motor. I read some article in either MMFF or 50 comparing mustangs. All high hp. I think one was 1000 hp. None had impressive 1/4 times. Street suspention and tires won't produce impressive 1/4 times. And a mild build will impress with everything else set up right. Want good 1/4 times on a budget, under the hood is not the place to look.
PS, for everything you put into that motor (including the heads and blower) getting the valvetrain and tune right could really bring that thing alive and leave you alot happier. I'd consider gather all details about that motor (all details) and paying a engine builder / cam grinder a consulting fee to give advice on how to improve.
a custom cam would be a big waste of money, he is at the limits of the stock fuel system right now. The lines arent going to go much over 500 at the tire no matter how much injector you throw at it.
With that power and a car that works, 10's should be plenty doable
Cobra912
Active Member
I was running 10.60's with less than a set-up as yours, C4, mild 331, small heads, .512 cam, 42lb, and only 7-8lbs of boost out of a pxton 1220SL, made 451/423 to the wheels through a T5 before C4
Yeah I was thinking about doing a fuel system like duel walbro pumps, 8an feed and stumped tank, but that's alot of money and I am a broke student. My buddy at the dyno said I could get away with 60's as long as I dont pulley it up anymore. I have had this car for 10 years and I have built it up as the funds have allowed. As far as suspension goes the car has control arms, sub-frames, 90-10 in the front 50-50 in back shocks and tires are m/t et streets on welds 15x10's. By tuning it myself I have gotten the car to idle better and fixed the hard starting associated with larger injectors. When I get the the 60's then I will do some track tuning and keep you all updated.
REALLY!!!!!!! Thats awesome, then there is hope for me. I have a T5 on this thing and am going to ride it until I blow it up.
Cobra912
Active Member
Yeah I am planing to just have fun with it as soon as I can get this lean condition figured out. The other thing is, when I got it back from the dyno I found out that the ground to the maf came loose. I wonder if that could have caused my lean condition? Whenever I get some more time I will do some more data logs. hahaha yeah I hope it stays together for a few good runs.
Mintsick
10 Year Member
Gonna have to agree with this one here, 480rwhp is a serious # in my eyes...if you're looking to primarily enjoy it on the street. If you're looking for all out 1/4 mile times then you'll likely have to give into the fact that a good tune/cam swap/fuel system upgrade is nearly mandatory as far as the engine is concerned. If it were my car sitting at 480rwhp and I wanted 10's I'd start working on the suspension and leave the engine somewhat reliable without pushing the limit.
at 480 at the wheel your way over 500HP crank, it takes about 50 HP to drive that blower at 5k rpm. Your maxed out on the block as well as your fuel system.
Yeah I am not going to push it anymore, I am going to leave the setup as is. The only thing I need to figure out is the fuel problem, I really dont want to go with a expensive fuel system just for a 1000 more rpm. I am going to see if 60's will work without having to throw more money at it. I have a couple of buddies that make 550 to the wheels still running stock fuel lines, so mybe i can get away with it. When I get tired of this setup then I will pull some money together for fuel lines and a 351w. Any input on if 60's will work would be appreciated.
