To put the V8 TB on the V6, i already have the throttle cable. But does the TV cable come off as a unit, or do I have to undo the white clip, and hope i put it back where it should be?

How long does it take? It's just popping off the TV cable, transferring sensors, and reinstalling TV cable isn't it?

How does the throttle cable link to firewall. I remember looking at it and not being able to find a way to pop it loose from engine side.

 

Anyone?

 

Sorry, my truck is a manual so I have no TV cable but I know my V8 TB came off a truck with an automatic, and there is a third stud on the TB linkage for the TV cable. You should be able to just slide the TV connector off the old TB and put it back on the V8 TB. I would think there would be no need to adjust the TV cable or remove it from the firewall but I have no experience with the TV cable or automatic transmissions.

Someone else here will probably know. Or check the service manual for info on it.

Jimmy

 

dakota-durango.com has a bunch of info about the swap. just look over there. i personally dont know anything about it.

 

So from what I read over there, It's a straight forward swap. I just need to take off all the extra restrictive crap off the top of the TB, and turn the 1" TB spacer into a venturi to gain back the bottom end. I think i can do that without destroying the die-grinder bit.

I have the 1" spacer, from what I can tell, The bigger CFM loses bottom end, but that can be gained back via the venturi. So I think I can die-grind the spacer into that general shape. Then grind all the tabs and what not off the top of the TB, and feather the ports a little.

 

This is going to be one big mass tune-up. The TB is just the first thing..

Throttle body swap w/ new MAP sensor
fuel injector cleaner
new air cleaner
spark plugs

in that order.

Dad's gone to San Antonio for work, so im gonna ****** the fuel treatment, TB gaskets, and MAP sensor on my way to work, and put the TB on when I get home.

For those wondering why I bothered with the TB spacer- I see alot of people that say they lose bottom end and gain top end with the bigger TB, which is true due to the venturi principle. Even though the V8 has a venturi, it's not small enough to make up the lost bottom end without effecting the desired top end. So I machined out the first 1/4" of the spacer. Because the TB angles out from the venturi point, and I machined that angle even further out (1/8" increased radius), but I left the spacer at it's existing diameter, and ground out the first 1/4" of "thread" on it. That way as the air de-venturi's out of the throttle blades, it hits a restriction from the TB spacer's slightly smaller diameter, then travels over the "threads" that were pre-existing in the spacer, before going into the manifold. This basically creates a second venturi, in theory, which should decrease the vacuum at the throttle blades (bacause the vacuum is being pulled at the spacer), causing the computer to dump more fuel in via the MAP sensor, picking up the bottom end. This is all theory. On paper and in application, it may mean $#%^. But we'll see.

So here's the result of about 1 hour of grinding:

 

So the swap was easier than I predicted. And I can't believe the size difference in the butterflies. I'll see how it does on the way to work today.

The hardst part for me was the throttle cable. It was siliconed in on the engine side like nobody's business. Had to cut all the silicone, then on the pedal side, crush the tabs with vise-grips and beat it out with a screwdriver. That took about 10 minutes. Getting the old TB out, swapping the IAC and TPS (i bought a new MAP, $100 that i put on it last night), putting the new cable in, all that took less time than it took to get the stock cable out. sheesh. But all in all, it was easy and quick.

 

Here's the butt dyno report-

To be fair, I did splurge the $100 for a MAP filter with the TB change.

The butt dyno wants to know why I didn't do that before. It picked up all across the board. It gained a little bit from idle to 2,000 RPM. But from 2K onto the shift point, it gained stuff I didn't know existed. The overhead computer didnt change much, so I don't think fuel economy was hurt any (again, MAP change could affect that). Also noticed the throttle spring was significantly lighter.

Big difference. Night and day.

 

Thanks for the report on your findings, I am thinking about swapping my TB out for a larger V8 model TB as well. I am having some odd "sluggish" problems when I get into the gas, but still not as bad as what it was before I cleaned the TB out.

 

Check your MAP sensor. They tend to err. I'm sure there's a good set of numbers for testing somewhere.