Mustang GT Throttle Body

96-04 4.6L SOHC car engines. (i.e. Mustang, Crown Vic, Marquee)

What modification is needed to make this tb work with the 2.5 uim (svt)?

Pretty sure this will only work with the SVT UIM, as the opening is slightly larger (full 65mm) than stock. I know when I got my max extrude honed stock UIM back however, that they had opened up the inlet some (65-67mm range). For those of you on stock UIM's, it's not going to improve things. Thing being that your TB is nearly the bottleneck that your stock UIM is.

Massiv.

i got mine off of a 98 mustang. the big mod for this is to switch the way the throttle plate opens. the actually bore is a pretty close match to the svt uim.

Anybody have a picture of one dissasembled? I bought one in peices and think I am missing a spring

there is only 1 spring

I know about the one spring, I just think its the wrong one. Looks to small to me. Anyone have pics?

As far as i know, you disassemble the 65mm tb, disassemble SVT tb and reasemble 65mm tb using svt shaft with 65mm throttle plate, and svt spring, rotor and tps.

Right, I bought mine disassembled already. Only think to work out is the spring.

OK, i'll take pics when i do mine

Originally posted by: nandalora
OK, i'll take pics when i do mine

Click to expand...

Great, thanks! :banana:

what kind of extra gains do you get using this larger tb.

I would say don't upgrade to a 65mm t/b unless you have a very "well-breathing" 3.0L It is not necessary for any 2.5L unless they are force induced. The t/b is not a much of a restriction as people think, so be sure you need it before just throwing it on and expecting gains. I talked to Terry Haines about this for 1/2 an hour the other day. The larger size brings in more volume but with less velocity and you don't want to decrease intake velocity because it causes cylinder filling issues.

-Nick

Any pics of the tb apart yet

I was messing with it last night, but it will take some time to make the swap. I'm camping this weekend so I won't be able to. Maybe I'll have some time next week. It's more involved than just swaping the throttle cam/rotor assymbly from the SVT. You have to use the cam from the Mustang T/b cause the o-rings to either side of the butterfly are too close together on the SVT. Anyway, you have to either mod the Mustang throttle rotor or swap it with the SVT one. I'm not sure which way I want to do it yet. I'll do it and take pics next week.

-Nick

No dissasembled pics?

Sorry, I'll post some tonight. But what do you need to see?

-Nick

If you have have any pics of everything dissasembled all layed out, would be nice. As well as a close up of the return spring. Thanks alot man.