I'm actualy not trying to argue with you because you have actualy started talking to people decent. You said you wanted to race him. I just think you should go to the track and do it.
The dyno tells you how much power your making. The track tells you how fast that power makes you. If you dont want people knowing what you run, then run no time like I said before.

Just do this.

Never said the carb really was no improvement only that it opened up little tunning secrets to the 4.9.... Actually 500cfm is a bit of a overkill since the stock Throttle body is only 350cfm.

And if I had to race my same car with a th 440 inside it against my 5speed.... Unless Im a awsome shifter it would be hard to outshift that auto the only advantage is I would be a bit lighter.... say about 120pounds.

But the higher stall TC allowed me to get better launches and retain the 2:73 gear ratio for high speed highway crusing Infact it's so nice that I have never seen this engine reach higher then 3200 RPMs in 4th gear.

I got your pm and it still stays the same.... I cannot race you illegally on the street.... I just can't afford to get caught.... Or worst... I rather hit the 1/4 mile down the strip and pick up our slips... So then it would be no excuses in who lost or whatever If we just did this on the street then it would be a he said this and that and this thread will grow to 20 pages.

Tell you what... I have a set date on when I actually start hooking up the turbo and since I got all my stick shift parts soo The turbo wont be going on for another 2 to 3 months after the stick shift install date. So you have a bit of time when you decide

And If I had nos the Only thing and I mean the only thing it would be used for is a ace...... Im not a expert on nos but im sure it does not do a stock 2.8 good at all

You seem to think you get hp out of a box, as in NOS, or a factory setup retrofit.

When you mod or hotrod an engine it takes alot of work before it is at it's 'sweet' spot.

First run at a track is just that. The first run. If I had an assortment of shooters, jets, cams, power valves, distributor springs, etc. available at the track, it would still take 3 runs with each setup, (likely 20+ runs over a couple of days), to establish any clear results.

You generally don't establish the speed the car is capable of until it is dialled in. A car can make more apparent power and still not produce across the power band like mine was doing with SBC jetting. Anybody who has done serious tuning knows the process.

Being dismissive is not intelligent and it does not prove your point. The carbed 4.9 is likely flowing alot more mix than a stock EFI setup, but probably not as much as that big Holley TB

I'll restate the obvious. Increase the flow of the engine and you increase hp and torque, NOS excepted.

So if you want to make your point, use somebody who has finished setting up their engine, not a guy in the middle of modding as your example.

Pick on the other carb guys who have the work finished and know exactly what they have not a guy in the middle of a mod project.

Arn

Oh really? I can only assume you have seen my car launch when on the bottle.

FYI. It dead hooks. No tire smoke nor wheel spin. this is on street tires and on the street by the way. And nitrous can be used in any gear. You dont' have to wait till the car is in 3rd gear or "at near full speed" to use it.

NOS at lower hp levels can hook up, but at the hp levels MT goes at, you'd be wrecking equipment and not hooking up right for certain.

Give a 2.8 drivetrain too much though, and it will break. No doubt at all. I've seen it happen.

I dont' think that at all. Which is why I have taken my car to an actual dyno to see whats happenign with it and tune from there. I dont' use a butt dyno like everyone else here does. i have spent countless hours on the dyno tweaking it to get the best power curve and a/f ratio as I can. Even after all this I can still do a bit more tuning to get into that sweet spot as you call it. It takes time on the dyno You can't do it with a butt dyno.

SH

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1986 Pontiac Fiero GT
Auto, soon to be 5 spd Getrag from 88 z24, Best 1/4 = 16.1 at 83mph, mods, wires, CRX intake, and power pulley. Planning Turbo 2.8 swap for a little more umph!!!!

8.9 1/8th and 14.2 qtr.

And these weren't even my quickest times either. These were also in my auto tranny 85 GT whiched weighed more then my current 88 formula and I know the formula is faster then my old 85 GT based on 3 things

Better gearing, more hp then my old 85, and the formula weighs less then my old 85 GT. All these combined make for a faster car.

Also you would never see my putting 125 jets in. its too dangerous and the engine cant' hold it for long. I dont' go higher then the recommended settings from NOS.

As you can see its quick off the line, quick to the 1/8th as well. ist my opinion that a stock 4.9 with auto tranny isn't going to do that. Which of course has been proven by several people here on the forum that with the auto tranny its not pulling these times.

SH