TB worth it?

JPstealth · May 5, 2009

I know there have been tons of threads on this but I am just hesitant since I am a poor college student. I have pretty much every bolt on except this. Its really not that expensive if the gains are right.

I do have a intake, larger MAF, and entire reichard racing manifold/plenum, from the previous owner. I know how the mani really doesn't help me being NA until high RPM's since it is for primarily boosted applications. So would a 75mm throttle body be advantageous to my set up or is it going to be that same maybe 5hp gain i keep reading about?

Gearbanger 101 · May 5, 2009

With your other bolt ons, a 75mm T/B would net you about 5-10hp at this point. If anything, the Reichard Racing manifold and C&L MAF Meter is probably the bigger waste at this point...but I realize they were on the car when you bought it. If you're looking for any real power beyond this point, I'd start saving for a real power adder like nitrous or forced induction. This is what's going to make all of your other suporting mods you've got up till this point really shine!

2003_GT · May 5, 2009

I think a 75mm is too big for a N/A applications, you wont really see much gains you might even lose some power at the top of the RPM band (i think so dont quote me on this) if you plan on stayin N/A just go with a 70mm i think that should be perfect

Hopefully some other stang members with a lot more knowledge and experience with such things will chime in :SNSign:

Pnyxprz02 · May 5, 2009

Dude you need to just buy a JLT cold air kit. It made a huge difference on my car. It relocates the mass air and filter into the fender. I felt a nice gain across the rpm band. I only have the 70mm tb, C&L intake, pullies, mac prochamber, flowmasters, 3.73 gears, and sct xcalibrator. You would really enjoy it.

Flghtmstr1 · May 6, 2009

I felt a nice gain with my Accufab TB and Plenum when my car was naturally aspirated. I went for the 75mm version btw.

Come to think of it, I still have that thing lying in my basement some where. Do you want it? PM me if you do.

d98gt · May 6, 2009

I don't believe that a 75 will result in poor performance by any means.

Just received my accufab tb/bbk plenum that I ordered off of ebay Of course I went with the 75 due to the blower.

ErikTheBeast · May 6, 2009

Im running a Trickflow 75mm and Plenum. Id say its worth it of course anything to make more HP is worth it in my book.

flstang65 · May 7, 2009

You certainly wont lose any power with a 75. I have a 75mm on mine, but that is becuase I plan on getting a blower eventually. If you plan on getting a power adder go with the 75, if not, I think a 70 shuold be fine.

Gearbanger 101 · May 7, 2009

There's no real disadvantage to going with the 75mm over the 70mm in this case. Flow will be improved (and probably warranted with that intake) and throttle response will remain as crisp as ever. Unlike OHV engines, modulars don't suffer negative side effects from large throttle body swaps. If you're going to buy one, go right for the 75mm.

joshjwc9 · May 7, 2009

Exactly...and they are usually the same price as a 70mm one. I have a Trickflow 75mm TB and Plenum on my GT.

squeak93 · May 7, 2009

I too am running a 75 and its screams from down low to up top.

scupking · May 7, 2009

Yup no reason not to go bigger, if I was in the market for a TB then I would go with BBKs new 78mm.

ErikTheBeast · May 7, 2009

scupking said:
Yup no reason not to go bigger, if I was in the market for a TB then I would go with BBKs new 78mm.

That thing looks sweet , but since the TB and plenum are one in the same your kind of limited as to what setups you can run.

JPstealth · May 7, 2009

hmmm, well it seems it might be worth it and having a srt4 pull on me tonight at 70mph is definitely pushing me even more now those things are pretty quick

scupking · May 7, 2009

JPstealth said:
hmmm, well it seems it might be worth it and having a srt4 pull on me tonight at 70mph is definitely pushing me even more now those things are pretty quick

I wouldn't think it would pull on you with you mods...

JPstealth · May 8, 2009

scupking said:
I wouldn't think it would pull on you with you mods...

not sure what was done to it but it wasn't stock.... loud ass turbo and exhaust

squeak93 · May 8, 2009

Srt's are VERY easy to get into the low 13's with very very high mph... Running those from a roll... almost always ends badly for a bolt on car.

Silverstang02GT · May 8, 2009

JPstealth said:
hmmm, well it seems it might be worth it and having a srt4 pull on me tonight at 70mph is definitely pushing me even more now those things are pretty quick

save up some money, add cams and he wont pull on you any more.

I have the accufab 75mm TB/plemum on my car

Flghtmstr1 · May 8, 2009

Most SRT4 drivers suck. You should be racing them at the dragstrip. I had a "buddy" with a 350 fwhp SRT4 who wanted to race me back when I was N/A. I said sure, and we went to the local strip. He ran a 13.8 @ 110 to my 13.6 @ 104

stangalator · Jun 26, 2009

if your engines were running at 100% efficiency (N/A of course) the most cfm we will need at 6000 rpm is around 480-500. When I was looking up the flow charts for the aftermarket plenums and tb, all of them flow over 500+ (besides C&L...) I think this is why the 70mm vs 75mm makes no difference in N/A applications. I can't find any cfm data on the bbk 78mm though...

TB worth it?

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