[JSH]

Originally Posted by Camaroking98

at sea level I would be hoping for 700whp.

700 x .8 = 560 actual in Lakewood (8000 ft. DA, 5800 ft. elev.) using std. 20% correction factor

Again, you can make 700 corrected with just valve train/heads, headers, and tune on 91/93 oct. and don't touch your blower or throttle body. Might have to put a tad larger lower on it.

[Evansa22]

Originally Posted by Camaroking98

Have not seen the cw3 build...can you link it here? I'm going with the cam because I figured that would get me an extra 50-100hp on top of the headers and intake but maybe I'm wrong?

What do you mean exactly by high side support?

Also what do you mean by "utilizing" the cam?

Do you really think the smaller pulley, LT's W/X-pipe, and intake would get me 700whp uncorrected?

Usually your high side rail will lose pressure first, which is the reason for a cam with a bigger fuel lobe, or better flowing high side pump and injectors. If you're not pushing enough power to need a higher fuel ceiling, then it's not necessarily needed. Cam will add some power, but the biggest thing to me is the added fuel. My high side was dropping around 660-680 whp with ethanol, so if you're running ethanol which you said you won't right now, or pushing enough boost to put you past that threshold, more fuel is needed.

[CW3SF]

The corrected (SAE) numbers will still be 25-40whp less than what the car would make at sea level because the supercharger will make about 2.5 lbs less of boost due to the altitude.

[Camaroking98]

Originally Posted by Evansa22

Usually your high side rail will lose pressure first, which is the reason for a cam with a bigger fuel lobe, or better flowing high side pump and injectors. If you're not pushing enough power to need a higher fuel ceiling, then it's not necessarily needed. Cam will add some power, but the biggest thing to me is the added fuel. My high side was dropping around 660-680 whp with ethanol, so if you're running ethanol which you said you won't right now, or pushing enough boost to put you past that threshold, more fuel is needed.

So am I screwed or something? I can order more if needed...but I thought I'd be fine.

[Evansa22]

Originally Posted by Camaroking98

So am I screwed or something? I can order more if needed...but I thought I'd be fine.

Not sure i understand your question. I would maybe throw a jms booster in there as it's cheap and will help with the lowside pressure. Next would be high side pressure which your addressing with the cam. Car should run good with a setup like yours, personally I'd upgrade the valvetrain while you're getting the cam done. Ethanol will help the engine run cooler and raise your octane once you're ready to go that route. I'd also install the flex fuel sensor while your getting these upgrades done (its cheap), you don't have to run ethanol with it but when you're ready to it's already there. Plus I believe the engine will run better being able to account for the ethanol that's already in 91 fuel. I'm no expert, this is mostly info I've picked up from this site and my tuner

[KingLT1]

Originally Posted by Camaroking98

I specifically just want to stay 91 just in case I do ever go on a road trip...I'm not all that familiar with the area yet, but once I'm comfortable I know there's a few E85 around so I might tune for that later down the line.

With my current mods, I don't need a fuel system upgrade do I? I figured since I'm not pushing for crazy numbers that I wouldn't need an upgrade with that...am I mistaken?

Really just trying for basic bolt on + cam lmao.

That is the entire point of flex fuel sensor. You can switch back and fourth between pump gas and E85 or any blend in-between. The ECM will adjust the tune on the fly. The caveat is you won't likely be able to just put pump E in the car without mixing some pump gas to blend the Ethanol percent down. E60 is really the sweet spot anyway for added octane and power gains. This is why it's not as popular as just installing a cam and pump gas...but imo it's the better way to go because the LT engines gain more consistent power from Ethanol then any other engine I have seen. You can also do a cam and E which is even better of course...either way imo these engines need E.

Bottom line is we can spitball dyno numbers all day...but dyno's don't tell the entire story. If you want repeatable consistent power from a stock blower LT4 car, then it needs E.

[JSH]

Originally Posted by KingLT1

Bottom line is we can spitball dyno numbers all day...but dyno's don't tell the entire story. If you want repeatable consistent power from a stock blower LT4 car, then it needs E.

How often do you adjust the tunes in your and your brother's cars?

[Camaroking98]

Bottom line is we can spitball dyno numbers all day...but dyno's don't tell the entire story. If you want repeatable consistent power from a stock blower LT4 car, then it needs E.

True, dyno is just a tuning tool after all. At the end of the day, I just want my car to run really solid and be reliable. I'd rather have 650whp and be as solid as a rock, than to try and push 700+ a break shit.

[CW3SF]

Originally Posted by Camaroking98

True, dyno is just a tuning tool after all. At the end of the day, I just want my car to run really solid and be reliable. I'd rather have 650whp and be as solid as a rock, than to try and push 700+ a break shit.

I made exactly 650whp SAE in Denver with regular Rotofab, Soler ported TB, ARH coated headers 1 7/8”, AWE catback, JMS Booster and flexfuel on an e70 blend. My local station blends to e70 at the pump so I didn’t have to do any mixing.

[Camaroking98]

Originally Posted by CW3SF

I made exactly 650whp SAE in Denver with regular Rotofab, Soler ported TB, ARH coated headers 1 7/8”, AWE catback, JMS Booster and flexfuel on an e70 blend. My local station blends to e70 at the pump so I didn’t have to do any mixing.

So there are a few e85 stations close to me. How much would it be to convert the car to e85? I know some people mentioned it earlier. Or how much for that whole flex fuel sensor that automatically retunes the car for whatever I put in?

[Camaroking98]

Originally Posted by KingLT1

That is the entire point of flex fuel sensor. You can switch back and fourth between pump gas and E85 or any blend in-between. The ECM will adjust the tune on the fly. The caveat is you won't likely be able to just put pump E in the car without mixing some pump gas to blend the Ethanol percent down. E60 is really the sweet spot anyway for added octane and power gains. This is why it's not as popular as just installing a cam and pump gas...but imo it's the better way to go because the LT engines gain more consistent power from Ethanol then any other engine I have seen. You can also do a cam and E which is even better of course...either way imo these engines need E.

Bottom line is we can spitball dyno numbers all day...but dyno's don't tell the entire story. If you want repeatable consistent power from a stock blower LT4 car, then it needs E.

So this flex fuel sensor and tune will give me e85 power if I pump e85 into it, and 91 power when I pump 91? And will adjust whatever power for whatever mix?

[arpad_m]

Originally Posted by Camaroking98

So this flex fuel sensor and tune will give me e85 power if I pump e85 into it, and 91 power when I pump 91? And will adjust whatever power for whatever mix?

Yes. The flex fuel sensor itself only provides a new alcohol % input signal to the ECM. The tune enables flex fuel usage, populates the necessary lookup tables and settings with accurate info.

The ECM can then always find the proper stoich value for the actual percentage of ethanol in the tank that the sensor reads, and adapts fueling based on the tables, triggers and volumes set in the tune, thus all its (lambda-based) fueling calculations will automatically be correct all the time between the set ethanol percentages (typically 0% to 85%).

As KingLT1 said, the rule of diminishing returns kicks in beyond E60, but since the energy density of ethanol is lower than that of gasoline, the more E you have, the more fuel volume the engine will need, so it may not be worth having enough (expensive) fueling capacity for E85, blending to never exceed E60 will give you almost all the achievable power.

If you want the convenience of being able to just pump/fill whatever fuel and never worry about blending, it will cost you, because you must upgrade the fuel system to a supply capacity sufficient even for E85.

[Camaroking98]

Car has officially been dropped off. Wish me luck gentlemen!!

[arpad_m]

Good luck

Also, your high density altitude will probably help go higher in E content than us valley and sea level dwellers.