Edelbrock TB

1595 Views 20 Replies 7 Participants Last post by AsScLoWn, Jul 21, 2002

Thyg0d

Discussion Starter · Jul 15, 2002

Found a TB for the 3.8 SC and if I'm not a total idiot... (DON'T ANSWER THAT!!!)
they sell a TB that fits to 5.0 at supercoupeperformance.com that fits both engines...

The thing is that I can buy the Edelbrock TB here in Sweden..
A lot easier...

So.... Am I an idiot or not?

Thanks!

Reg's/
/Per A

1 - 20 of 21 Posts

Cheetah

· #2 · Jul 15, 2002

No your not

It's a standard TB for a SN95 Style Mustang, which happenes to have the same bolt pattern as the 3.8 SC... the throttle linkage is somewhat different FROM what I've been told... I have one I just havn't had a chance to compair it... I suggest going with a standard 5.0 mustand 94-95 TB from your fav manufacturer

Jim

Thyg0d

Discussion Starter · #3 · Jul 16, 2002

Hmmm..
But I want to go big... =)
meaning 75mm or something...

Is there one for the 94-95 mustang that fits mine?
With Throttle linakge and all... .

Thanks!

//Per A

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Cheetah

· #4 · Jul 16, 2002

Yes

They sell 65mm, 70mm and 75mm , threw summit , from BBK

Part #'s

65mm - BBK-1522
70mm - BBK-1523
75mm - BBK-1524

Yes they'll fit... yes the linkage is right... Enjoy

If you need more help feel free to ask

Jim

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Thyg0d

Discussion Starter · #5 · Jul 16, 2002

Thanks!

Going on the next order from summit...

Hope my company gets my salary right this time...
Got $1500 less than I should have last month...
That hurts!

Well..
Thanks again!

Reg's
//Per A

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Blown306

· #6 · Jul 16, 2002

My SN95 BBK 70mm Throttle Body did not have the same linkage as the factory TB on my 93 5.0...I needed to graft the original linkage onto the new TB.

Also, 75mm is way too big for a n/a engine. You don't need it. Like Lonnie says in another post, stick with 65mm. More is not better...even if you are going to supercharge someday, 75mm is probably still too big unless you're building a Pro-5.0 engine and not telling us, then it'll be too small

Here's a question, does anyone know the flow ratings of throttle bodies in CFM's? Maybe that's a better (easier) way to look at it and put it into perspective...

Werty

· #7 · Jul 16, 2002 (Edited)

This is what he is reading off of www.supercoupeperformance.com. This is listed in the 5.0 section.

"70mm 5.0L Throttle Body (with new gasket)
This throttle body is specifically designed for the 5.0L and 3.8L SC engines and has the correct throttle linkage.
A terrific upgrade to the induction side of your engine.
Get rid of that puny 60mm stock unit."

I thought that the SC had different linkage. I could be wrong.

Here is the picture they have:

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Werty

· #8 · Jul 16, 2002

I just posted a tread asking for a pic of a SC TB on SCCoA. That will take care of this.

Blown306

· #9 · Jul 16, 2002

That linkage looks the same as the 5.0, it's got the hole up top for the TV cable...

Thyg0d

Discussion Starter · #10 · Jul 17, 2002

Thanks everybody...

Would 75 mm be too big?
That's odd... I thought since I'm going to be S/C:ed
with exactly the same setup as you Blown306
I really thought I needed a 75mm TB...
I mean... It's alot of air that has got to pass there..
Well...
I seems that even I can make a mistake...

Hope the SCCoA guys help... Really want some more air... =)

Blown.... If you've got time and want to...
Could you tell me what you've done to your engine
Well... Your whole car... Since you've pretty much got
the setup I want perhaps I could learn from you...
So I don't make any more mistakes...
One is enough...

Regards
//Per A

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Werty

· #11 · Jul 17, 2002

here is the pic I got on SCCoA:

now that doesn't look like the 5.0 T-bird linkage at all.

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Blown306

· #12 · Jul 17, 2002

Werty, that looks like the 5.0 linkage to me (as far as the connection points anyway, can't see the orientation)...it's got the rubber grommit for the TV cable and the ball for the throttle cable. The SN95 linkage looks much different than that. If I find the SN95 linkage I'll snap a pic and post it.

Thygod, all my mods are on my readers rides page - My Ride

The 70mm has done good for me (running about 9psi currently) good throttle response etc...after I get some more initial tuning done, I will be upping the boost to @ 15. At that point, I'll need more injector. The bottleneck will be the lower intake, not the 70mm TB...

If you can't get the air through (i.e. lower intake, cam, valves, heads, headers, exhaust) then it is not necessary to have an oversized TB or MAF.

Would you put a 70mm throttle body on a lawnmower? Of course not. Why? Because the lawnmower engine can only process so much air. Same concept here. If you can flow the air (if the TB is your bottleneck) then go with the larger one. If not, you are wasting your money.

There are some real good threads out there about oversizing the TB and it's effects...I think Lonnie and Jerry have written some good posts about the subject. I haven't even gotten into the potential drivability problems with MAF and TPS readings, etc, not jiving and such...

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Blown306

· #13 · Jul 17, 2002

Here's a pic of the SN95 BBK 70mm TB...the linkage is very different and will not be a direct bolt on. The linkage will have to be swapped out with the original. As you can see, there is no hole for the TV cable. Other than that, it does have the correct mounting for the intake, IAC and TPS.

The pic is on Summit's site, search on throttle body to find it.

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Skidonenko

· #14 · Jul 18, 2002

I have talked to Lonnie had he said the SC TB has a diff bolt pattern that bolts to the intake, he is swaping the linkage for me off of a used motorsport 65mm.

Josh

Thyg0d

Discussion Starter · #15 · Jul 18, 2002

So the conclusion is that there isn't one 70mm Tb that fits a 302...?
Direct bolt on I mean....

That didn't make it easier...

But if I go with the SN95(What's that? Mustang?) TB and reuse
my old linkage it would work...
Is it hard or is it like on my old Volvo... Just two screws???
The linkage comes of and bolts back on the other???

Sorry to be souch a pain in the @ss but I can't return parts...
Gotta get it right the first time...

´

And I'll check your ride out Blown306...
Guess you've got some nice things under that hood...

Thanks a lot!

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Blown306

· #16 · Jul 18, 2002

Thyg0d said:
So the conclusion is that there isn't one 70mm Tb that fits a 302...?
Direct bolt on I mean....

Well if Josh/Lonnie are correct, then there isn't a direct bolt on. I have not seen the SC TB in person...looks like the linkage is correct, but the bolt pattern is different apparently.

That didn't make it easier...

It's a T-bird...nothing is easy when it comes to modifying it

But if I go with the SN95(What's that? Mustang?) TB and reuse
my old linkage it would work...
Is it hard or is it like on my old Volvo... Just two screws???
The linkage comes of and bolts back on the other???

Not quite...see comment above. SN95 is 94-95 Mustang, they have the 5.0 with the T-Bird style intake. To swap the linkage, you will have to grind off the welds and re-weld it to the new shaft. Luckly, the shafts are the same size. They're square, so you have a 1 in 4 chance of screwing it up if you don't pay attention to the orientation of the linkage. MIG weld the linkage back on the new TB. I had my body shop do it for free. Any muffler place could do it as well for you.

Sorry to be souch a pain in the @ss but I can't return parts...
Gotta get it right the first time... ´

It's scary grinding on a $$$ new part...as soon as you touch it the warranty and return policies are out the window...but take your time and it'll be fine. I used a Dremel tool with a metal cutting disc.

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Cheetah

· #17 · Jul 18, 2002

Hmm question. Know I ask cause I don't know... is it nessicary to run a TV Cable with a fully manual valve body? I guess you'd still have to adjust the pressure huh??

Jim

Skidonenko

· #18 · Jul 19, 2002

id think so, if you didnt ming a neck braking shift on the 1-2 in traffic you could just pull the cable on the tb end all the way out

Josh

BosNA302

· #19 · Jul 19, 2002

Hey guys, no you don't need to run a TV cable with full manual valve body... in fact if you do (on the lentech units anyhow) it willl screw with your full manual control. The full manual VBs work on a fixed line pressure... and yes, I can chirp my tires going from 1-2 and 2-1 lol but full manual ROCKS... the only problem is that you don't get engine braking in second which sucks... but Art Carr supposedly just released a new switchable auto/manual AOD VB... check it out and let the group know... I'm happy with my lentech even w/o the engine braking in 2nd, gives great control

-Jim A.

Cheetah

· #20 · Jul 19, 2002

Acctually I'll be buying that ArtCarr Valve Body so I'll let evertyone know how it works...

Jim

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