i appreciate it Thunderstruck. It was street tuned (tweaked from the dyno tune) while driving very moderately. From a 25-30mph+ roll, throttle is great. I am taking it back up to have him check out bottom end tuning. Might go MAF. Not sure the thought behind no MAF other than I was told it is more important on boost vs N/A tuning.

 

I see the problem here. You guys think its ok to throw money in the trash due to poor cruising economy. Thats all this is- a cruising economy point of view I am sharing. The 3-speed stuff is all terrible for taking 3000 miles journeys across country. That is why it is not a "street car". My definition of a street car is a reliable one... silent... and goes 3k miles with reasonable fuel savings (or whatever, 150k 250k and so forth).

Just because I can light a pile of money on fire in my front yard each day driving a 3-speed... doesn't make it a smart decision. But yeah , of course you can do it! do whatever you want...

 

The trans is everything. I'd rather have a 8-speed than a 3-speed. Why do you think the auto manufacturers are moving toward more gears? Lol they are all idiots right? Silly them, they should just change the rear gear ratio! Think of all the money they would save! Quick, call them and tell them they are idiots for adding more gears!

 

Yes, I have experience with this. Went from a stock converter to a 10" 3800stall TCI in my 1983 Camaro behind a 355 N/A and 2.73 rear gear, and it got dog slower, night and day. The converter wasn't able to do... whatever it is they do when the gear is right. I'm not a converter expert but I am sure you can ask one why it happened, the trick is gearing needs to match. plain and simple.


If the vehicle is used for racing purposes only you dial the rear gear to max MPH and RPM for the intended application (1/8, 1/4, 1/2, 1, 2 miles racing). You can't just throw random stats for 1/4 mile cars only and say its a "shame" or whatever.

Street cars.... the rules change. If you truly favor economy, you have way more work to do than just choosing the best gear for max MPH/RPM in final racing gear. You need to actually test the car, drive it at different speeds and find the best(low) injector duty cycle, with the highest vacuum signal, the best EGT and so forth. There is alot of calculation involved. The weight and rolling resistance of the vehicle determines how much gear you can sneak out from under it (to reduce engine RPM) without ruining its performance in the (1/8 1/4 1/2 etc) whatever the application is when its not just driving around economically.

And a huge waste that is, something I do not support or advise, but I am poor so that is probably why. In my mind nobody is that wasteful; thus they do not exist as examples (they are poor role models for your own vehicle if you intend to achieve economy value points) try not to learn from poor examples, it leads to terrible ideas being fostered by the masses. or something.

 

^^^ why are you such an *******? Lol

 

Have none of you been on a powertour? Shitloads of 3speed autos. Cruising long distances.

4speed autos will fit in my car, but the 6 speed, 8 sleed etc, not even close. If you want an economy car, go get a prius or a volt.

My car is a street car, with a th400. With the 3.08s I can get 18mpg if I want, which is as good as I did in a 2010 Camaro with a 6 speed.

But I'm glad the thread got taken over to fight about mpg. Didnt realize this was the prius forum.

 

They are moving toward more gears because they have to try to satisfy the government and tree huggers. They have to get better economy and less emissions at the same time. Not everything is for performance and if you knew more about the evolution of motor vehicles you'd know this, It's been happening since the late 60's.

 

He's simply the most amazing idiot I've ever seen. He and Karl Pilkington should travel the globe together.

 

Karl Pilkington is amazing, I never laughed so hard due to someone that is genuinely himself. The moaning of life is his new series.

 

Through my th400 I can cruise at 50mph at 2200 rpm, and also hit 100mph on 2nd at 6200rpm with my 3.08s.

 

It sounds like you need more gear to wake that car up. Like a 3.36, 3.55, 3.70.

 

This is a summary of gears, it outlines everything I could think of that might be important to have a viewpoint on transmissions in 2016 in general for all vehicles, whether performance or economy biased, or both. The fuel economy aspect of tuning is considered "advanced", injector phasing and lean air fuel ratios with considerable timing tuning (via logs with EGT and injector duty while using cruise control) keeps the combustion chamber and plug cleaner (less carbon byproduct) and help the engine produce less wasted energy in temp rise (the engine can stay cooler) and of course the better fuel use per time (gallons per hour or miles per gallon etc..) are all benefits to economy tuning (its not just for Priuses. It is for every engine that you care about).

 

Are you on drugs?

 

Ever heard HOT ROD drag week ?

 

original poster. you ever read this article ?
http://www.hotrod.com/articles/ls-cam-test-comparison/

kinda goes into detail about what your experiencing.

 

I meant, they don't put them into actual cars you buy new anymore. Not that you couldn't find them lol. I know you can throw a rock and hit a 3-speed.



rofl like I would be ok with doing this without caffeine and so forth

 

Less gears does not necessitate a faster vehicle. The problem is your think is eco minded. Most of the 3 speed people are all about most efficient power for the least cost. Your correct in thinking that fuel economy is affected by the additional gearing. Generally have overdrive will lower the rpm into a more efficient area but it has to do with the rear end ratio as well. How about your 8 speed with 5.13 gears vs the 3 speed with 2.29 ratio?

What transmission eats up more power via frictional losses or just amount of extra weight? A 2 speed power glide or the 8 speed in your odd diagram.

 

Got a retune 2k rpm and under. Added more timing and a little fuel. Roasts the tires away now and much livlier.

 

Good to hear, Now maybe kingtal0n will quit trying share his infinite wisdom!

 

Glad to hear you got it figured out!