tooter 2.7 intake manifold spacer...

i see what you are saying. Im just saying that your situation is a lil different. The reason you are getting that bucking while in 1st in 4lo is because of the torque. That gear is so low and has so much torque without the added engine torque that just the slightest amount of throttle is either adding a lot more torque or taking it away very fast. Unless you have a clutch to ride then you really have a limited way of controlling that and even then you have to be on top of your driving skill game to execute if properly and often. In Tooters case, the added torque is helping him get into a gear that doesn't already have a huge amount of torque and instead of the truck wanting to die because it has no power, its instead creating enough power to keep it running and pull it into a higher torque range. Hope that made sense

 

Thats why theres a group buy feeler to get the same header tooter has. I emailed lce today waiting on a response.

 

riding the clutch while offroad is a must. IMO it creates an advantage over an A/T. It allows you to control how much power you want to put down and at what time you want to put it down. Def takes some learning and getting used to but once you learn to control the truck with the clutch and not just the gas or brake pedal, it makes rock crawling much much easier. Not only controlling the truck on uphill or climbing situations but also using the clutch to control your downhill situations. Huge advantage over an a/t

 

Thanks, rex. I'm glad you corrected me on this point.
I'm not a rock crawler. In fact I never drive off road. I mistakenly thought Hagen had trouble getting moving in first and was using more gas pedal to keep from stalling.

Yes. So far it's no test at all.
I've only offered my own subjective driving feelings. Doing a dyno test with the spacer, and comparing it to the dyno test without it will give a much more accurate indication of the gains than my subjective impressions.

That's totally correct. Mods working together can increase the results more than the sum of each one done alone.

The Injen intake can't account for any gains since that design is routinely condemned by everyone here for not being a cold air intake, and is generally regarded as a performance negative since no one else here runs one except me. I got this particular intake because it has only one fixed mounting point, and was a snap to relocate when the spacer moved the throttle body.

So that leaves the header as the only difference from stock since I'm running the stock 2.7 exhaust system. The header did significantly lower the torque curve by 500rpm, and I believe that it accounts for most of the low end toeque gains.

That's also true. So far there's only:

1. URD bone stock 2.7 dyno chart

2. my 2.7 with intake and header dyno chart

And soon to come, my 2.7 with intake, header, and spacer dyno chart

So the only people who would see exactly the same gains with the spacer would be those who were also running an LCE header. And they would likely enjoy even more gains than I have, if they're running a cold air intake.

 

Well put, rex.
With 3.31 rear end street gearing and no hi/low box my first gear is relatively high when compared to 4X4 gearing. Even though it wasn't really a problem before, now it's much easier to creep off the line at very low rpms without stalling.

 

I'll guess that LCE will come up with a deal. They'd have to be crazy to turn down the opportunity to sell a batch of headers. I'm totally happy with mine. Even at full price I still consider it a good deal because of how well the engine runs with it.

 

I was told they stopped production a while back due to lack of interest/return per sale and then started again, the lce worker i talked to said he will try to hammer out a deal with the others at lce and get back with me in a day or so.

 

What would it take to make my Taco's dyno sheet look like this?

 

what was that dyno from?? That's a lot of torque at low rpms.

 

A D4?

 

It wouldn't surprise me if there was only one guy making them. If there is, you're going to make him really busy!

 

It looks a lot like my Duramax. It peaks at 1600rpms lol.

 

Kinda like you tw is going to make you really busy.

 

2006 LLY with the 2nd level Bullydog tune.
That was the "LLY" that was 100% LBZ except for the tune.

'06 Duramax = 18mpg, 6.6l engine, 8,000lbs 4x4 CCSB
'03 Tundra = 16mpg, 4.7l engine, 4,500lbs, 2wd AC

 

I've got the 07 classic body style lbz I didn't realize the lly peaked so late. Sorry for stealing your threadtooter.

 

No, please continue. I'm totally intrigued.
Can you post a pic of the vehicle with that dyno chart. My first guess was that was a marine engine.

 

Tooter you said that injen intake wasn't an improvment but it just might help a little with mpgs. It my small block racing books there is a couple paragrahs about how warm or hot air is better for cruising around and driving normally but you want cold air for wide open throttle.

 

It didn't. The dyno operator was having trouble getting good readings below 2300. Mustang dyno, dunno what the deal was but we tore it up on that dyno day. Must have run 30 trucks.

 

And when things don't go quite so well...
http://personal.linkline.com/rlockyer/llybad.wmv

 

hp = ( tq * rpm ) / 5250

Those lines are not the hp and tq for the 2.7. As the hp and tq values should always be equal at 5250 rpm. For any engine.