3500 intake+exhaust

[3100GAGT]

Is it possible to swap out a 3500 upper intake manifold to a 3400
Also can you use the exhaust manifolds off the 3500 or do you need a new oil pan? in the way of oil filter? just wont fit.
Can you drop the pan without the sub frame?
I have a high flow cat hacked in so the cat is not a problem.
Thanks Guys

[Doubt_Incarnate]

i think there is a threa here involving that, do a search and see if it turns up. one of the biggest things is the tb bolts on differentyly, and the 3500tb is "fly by wire" so you probably cant use it. and i remeber something about making a IAC adapter. it bolts on a little differnt and i think there may be a clearance isue or 2, v6h.o. i think has a thread.


here ya go

http://www.60degreev6.com/index.php?name=PNphpBB2&file=viewtopic&t=4193&highlight=

[Froggx]

I'm doing this so hopefully I can be of a little help.
The throttle bodies are completely different. 10 minutes and a power drill will make a stock 65mm ford mustang 4.6 throttle body fit excellently. I got one with a TPS for less than $10 shipped on ebay. I think I spent more time grinding off the Ford logo on the TB after a guy at the hardware store that I was lying to him when I told him it was a GM plenum than I did modifying the TB to fit onto the plenum. The linkage swings in the opposite direction so you will have to find someway to hook up the throttle cable, should not be too much of a problem. Also, we had to make a special IAC adapter, you can likely get one from RacerX11, he did mine.

[Mars]

I did it :





I used a Ford racing 70 mm TB...



Had to port the heck out of it, but it looks like it will flow pretty darn well.

MArty's famous IAC adapter...



I still haven't ground the "FORD" off my TB, you can see it in the last pic. I think I will leave it there...

If you want, I can snap some pics of the Throttle cable braket, I basically cut up 2 of them and welded them to make one again... Works flawless.

As or the 3500 exhaust, well, i dont think anyone has tried it yet.

[RacerX11]

That setup looks great. I like the color of the plenum. Did you end up grinding on the TB neck to clear the fuel pressure regulator?

Marty

[Mars]

That setup looks great. I like the color of the plenum. Did you end up grinding on the TB neck to clear the fuel pressure regulator?

Marty

I am using phenolic spacers between the UIM and LIM, so it wasn't an issue. clears by enough... You can see them in pic #2. I took a tiny bit off, but not much, I don't even think it was necessary.

Just got word that my new blower has made it's way to my postal box... OHHH man, I can't wait to go pick it up.... :P

[Froggx]

I had to do grinding on the TB neck to fit my FPR, it's no big deal though, 5 minutes with a carbide and most of it was spent walking to the engine and checking clearances than walking back to my work area.

I would love to see what you did for the throttle cable as I'm currently scratching my head on this one.

[Mars]

I had to do grinding on the TB neck to fit my FPR, it's no big deal though, 5 minutes with a carbide and most of it was spent walking to the engine and checking clearances than walking back to my work area.

I would love to see what you did for the throttle cable as I'm currently scratching my head on this one.

Ahh, I just remmbered. I had to modify the TB itself. I removed the part that the cable "rides" on. I then rotated it about 180* and re-attached it on via pop rivets.

So, now the cable doesn't have to point towards the engine, BUT can now point away... Much like stock, SAVE that you dont pull "upwards" you make it pull "downwards"...

Not the easiest thing I ever had to explain, but try to visualise it..lol

MS PAINT :



grey is the TB
Red is the TB shaft
Yellow is the butterfly
Green denotes cable routing
black "half moon" in the part the cable rides on
black line in the tb cable braket...

That should explain it...

[Froggx]

I understand what you mean with that. I'm going to have to wait until the motor is in the car I guess because the cable in the car comes from the direction that the ford TB swings stock but I have no idea how I am going to get it to run under the plenum which seems to be the only way to come from that direction.

[Fiero11]

My intake measures 66mm. Your TB was 65mm. Is the TB outlet bigger then 65 or 66mm? How big? Is this why you had to grind the manifold?

[Mars]

My intake measures 66mm. Your TB was 65mm. Is the TB outlet bigger then 65 or 66mm? How big? Is this why you had to grind the manifold?

If your talking to me, my butterfly in the ford part is 70mm.

[Fiero11]

My mistake. I read the froqqx post as your post.

[Froggx]

You have to grind the the manifold because the throttle body neck hits the fuel pressure regulator.

[firechiken]

What were your numbers before the swap, Mars? I'm assuming the 14.41 on your site are with the 3500 plenum. By the way, your car looks real nice.