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V6 Throttle Cable on 4.9L Swap by jstricker
Started on: 07-06-2004 11:49 PM
Replies: 6
Last post by: jstricker on 07-07-2004 12:50 AM
jstricker
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Report this Post07-06-2004 11:49 PM Click Here to See the Profile for jstrickerSend a Private Message to jstrickerDirect Link to This Post
When we did the 4.9L swap into the Finale we were told that we needed the 4 cylinder throttle cable and it would bolt right up. No problem, I have 3-4 cylinder parts cars. Problem was, none of them would work. I found out later that you need a LATE 4 cylinder throttle cable, but we needed it NOW, so I made the 6 cylinder throttle cable work and it worked fine.

The first thing you need are some cable swage fittings. These can be found at a GOOD hardware store. Most likely you're going to need the smallest ones they have. I'd suggest that you get a few of them so you can practice crimping them so you know how far to crimp as you can go too far. Your primary one that you need is a double cable swage and it looks like the one on the left in the following two pictures.


Neither of the pictures above show the proper sized swage fitting because the bigger ones photograph better, but they look identical except for the size of the holes for the cable and the overall size of the fitting.

These pictures show two fittings, one a double hole fitting and one a single hole fitting. The double is the one you want to use to make a loop in the end of the throttle cable.

Here's a picture of the V6 throttle cable. Start by cutting the metal loop at the end of the cable off leaving as much cable as possible sticking out of the sheath. You want to cut JUST THE METAL LOOP OFF and no more cable. Make a nice, clean cut on the cable so it doesn't fray. A good, sharp pair of diagonal cutters will work just fine.

Now you need to make a loop in the throttle cable. Pass it through the swage fitting, loop it, and then through the other hole so it looks like this

Lay the cable and loop in the 4.9L TB with the plastic in the stock 4.9L retainer and check your length. You want it to lay in there easily. You have a LOT more travel on the throttle pedal and cable than you need for the 4.9L, so as long as it lays in there nicely, you'll be fine. If you can, make it so the loop just lays in loosely and you have excess sticking out behind the swage.

Now you need to swage (crimp) the fittings. This is not unlike crimping an electrical connector. The fittings are soft aluminum and the small ones you'll be using are easily crimped with electrical crimpers. In fact, you need to be careful that you don't crimp too tight and break the fitting. Just get a nice, tight crimp. You might want to buy some extra fittings (they're very cheap) and practice before you do your cable.

If you have enough cable sticking out behind the fitting, you can use a single hole fitting and crimp it on there as well so that you know it will never come loose. These fittings are small enough they will lay in the groove of the 4.9L throttle body actuating cam.

I used a stainless steel, button head, allen machine screw that I cut off to the proper length with a standard nut and a star washer. I also put a drop of loctite on the threads. Remember to pass the screw THROUGH the loop of the cable. I also used the screw to size the loop when I made it so that I knew the screw would slip through the loop easily when I got ready to put it on the throttle body.

We've driven the car about 1500 miles so far and almost 300 on track day at Wheatstock and the screw and cable show no signs of wear. You'll get full throttle well before the throttle is on the floor so you might want to fab a throttle stop at the pedal to keep from stretching and abusing the cable.

BTW, you can also use the simple, single hole fitting to take up the slack on your stretched throttle cables in stock applications. Just cut the stock end off and put the new one on. You can double them up if you think you need to, but once properly swaged, they're almost impossible to get off.

John Stricker

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$Rich$
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Report this Post07-06-2004 11:53 PM Click Here to See the Profile for $Rich$Send a Private Message to $Rich$Direct Link to This Post
the "AOS" aluminum Oblong Sleeve is that the one on the left is actually called, i work with these every day and We actually have Thousands in every size from the absolute smallest to the verry largest, if you tell me the actual dia. of the throttle cable ill send you the correct size which will work better and look nicer
and the smaller ones are called Button Stops, i also have every size avab.

[This message has been edited by $Rich$ (edited 07-06-2004).]

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jstricker
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Report this Post07-07-2004 12:15 AM Click Here to See the Profile for jstrickerSend a Private Message to jstrickerDirect Link to This Post
Rich,

I knew you worked with this stuff but didn't realize you did the tiny ones, I thought you only dealt with the big cables.

It's really pretty simple to do, if you exercise some care and don't over crimp them. I don't recall the size as I stumbled on them at the hardware store and just got the three smallest sizes there, the littlest one was a perfect fit for the cable.

One thing I can't stress enough is to get a very nice, clean cut on the cable. If you fray the end, it's a real PITA to get through the fittings. Rich can tell you about cable splinters, they're no fun.

John Stricker

 
quote
Originally posted by $Rich$:

the "AOS" aluminum Oblong Sleeve is that the one on the left is actually called, i work with these every day and We actually have Thousands in every size from the absolute smallest to the verry largest, if you tell me the actual dia. of the throttle cable ill send you the correct size which will work better and look nicer
and the smaller ones are called Button Stops, i also have every size avab.

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FieroMaster88
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Report this Post07-07-2004 12:26 AM Click Here to See the Profile for FieroMaster88Send a Private Message to FieroMaster88Direct Link to This Post
Cool! Thanks for the info! If the 87 coupe in the jucnk yard doesnt have a throttle cable I'll probably do this.
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$Rich$
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Report this Post07-07-2004 12:26 AM Click Here to See the Profile for $Rich$Send a Private Message to $Rich$Direct Link to This Post
 
quote
Originally posted by jstricker:

Rich can tell you about cable splinters, they're no fun.

John Stricker

see next post

[This message has been edited by $Rich$ (edited 07-07-2004).]

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$Rich$
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Report this Post07-07-2004 12:30 AM Click Here to See the Profile for $Rich$Send a Private Message to $Rich$Direct Link to This Post

$Rich$

14575 posts
Member since Dec 2002
 
quote
Originally posted by $Rich$:

we work with every size from 1/64th i belive all the way up to 1-1/2" in everything from import steel , domestic steel, Junk ass Fiber core, Galvanized aircraft cable (GAC) and stainless, even Vinal coated and PVC coated, Vinal is avab. in all colors
you name it I have it !!
i also have Nylon rope but i personally dont work with that stuff, people dont bellive ya much when you tell them that Nylon rope slings are stronger than steel but they are by far
i draw blood atleast once a day, today i sliced my Fore arm open on a pice of wire from 1-1/2" Dia. ( the biggest we stock),
6x37 wire rope

it was a tow cable that was 185' long, and had small 3 turn thimble eyes on each end, , ya know your workn with big sh!t when you pick up a chunk of 1-1/2" and try to brade a small eye in it, it'll kick your arse every time

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jstricker
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Report this Post07-07-2004 12:50 AM Click Here to See the Profile for jstrickerSend a Private Message to jstrickerDirect Link to This Post
Don't ask me how it did THAT double post

[This message has been edited by jstricker (edited 07-07-2004).]

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