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Topic: Throttle body question..... (Read 2918 times) previous topic - next topic

Throttle body question.....

For those with experience....I now have a 70mm throttle body on the Sport with the Trick Flow Street heat intake. Is the 70mm t-body too big? I've had a 65 with the GT-40. Engine combo as follows...

GT40-P engine
TFS-1 cam
Ported heads with Trick Flow springs
Crane Gold 1.7 roller rockers
24# injectors and C&L Mass Air meter
BBK shorty headers

So, is the 70 too big?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Throttle body question.....

Reply #1 –
You might notice less pedal travel required to accelerate, but it would be slight and you will be fine. Is the opening in the upper port matched to 70mm?
[SIGPIC][/SIGPIC]88 t-bird: 5.0ho, gt40y, crane 2031, fms 1.7, paxton@5#, aod wide ratio, tci stall, performer rpm upper, 70mm bbk, pro m 60, 42#s, 3.73 7.5" posi, jba shorties, borla, upr x. 13.4 @ 104mph. cbaza, moates, tuned by decipha

Throttle body question.....

Reply #2 –
Yeah, the upper is also 70mm. I now have to correct a whistling from the t-body. I'll pull it and smooth the edges and drill a small hole in the plate.That should do it.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Throttle body question.....

Reply #3 –
70MM is not too big.

Throttle body question.....

Reply #4 –
Yeh it's to big!! Isn't bigger better?. Seriously, You can get use to the whistle ,it's kinda neat at times. Your right about in your build for a 70mm.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Throttle body question.....

Reply #5 –
Does it run better than the GT40 and 65mm?
88 Cougar LS 5.0 .030 over, ported E7s with GT40 valves & trickflow springs, Proform roller rockers, HO cam, removed air silencer, K&N filter, smog pump delete, 2.25" dual flowmasters, Pacestter H-pipe & headers, HO computer, 65mm TB, Explorer intake, 19# injecters, 3.45s, rebuilt posi, and TCI shift kit.

Throttle body question.....

Reply #6 –
Quote from: Bruce M;360853
Does it run better than the GT40 and 65mm?
What do you think?
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Throttle body question.....

Reply #7 –
Quote from: Kitz Kat;360854
What do you think?

I would think so, I guess what I meant was is it night in day or just a little. Basically is it worth $500+ for a new one.
88 Cougar LS 5.0 .030 over, ported E7s with GT40 valves & trickflow springs, Proform roller rockers, HO cam, removed air silencer, K&N filter, smog pump delete, 2.25" dual flowmasters, Pacestter H-pipe & headers, HO computer, 65mm TB, Explorer intake, 19# injecters, 3.45s, rebuilt posi, and TCI shift kit.

Throttle body question.....

Reply #8 –
I haven't actually had a chance to really test the difference yet. Had to go to work early, and cs afterward. I think I may have to re-set the timing. I always leave the distributor in place when I do an intake swap, but now, with a/c and all, I had to pull the distributor out. I marked it, and it may be dead on, but I doubt it. It's still running strong though. I'll pull the throttle body and roll the lip on it, polish it inside, knife cut the blade and drill a small hole in it. That should clear up the whistle, it did with my 65. I still have to grab a pic, but I think I'm going to wait til I do some cleaning under the hood.

I like it, but have to get used to the new look. It's (the upper) also a lot heavier than the GT-40 by a lot.LOL.

This intake is quite a bit bigger. It covers all of the driver side valve cover unlike the others I've had, and like I said, I can't use my strut tower brace now. Guess I'll have to polish my Explorer intake and use it. Just kidding. I'll polish it and sell it when I have the time. That money will buy a replacement brace eventually. 
I also had to buy replacement fasteners for the end studs. The factory supplied nuts require a special 1/4 inch drive 12 point 3/8 swivel socket. I figured it would be faster, cheaper, and easier to get standard nuts for it. They worked.

In the end, I think it gained a few horses and the throttle response is a little different as well. More as it happens.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..
 

Throttle body question.....

Reply #9 –
UPDATE.......I got off work a little after 3:00 today, had to do a couple of cs, then went to a friends machine shop so we could time the engine. It was set at 20.LOL.  Now it's at 12 degrees and running really strong. I hate the whistle, but other than that, it's great. I'll fix the whistle tomorrow or Thursday.Sometimes the Sport reminds me just how awesome she can be.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Throttle body question.....

Reply #10 –
No pinging at 20B? or was that after?
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Throttle body question.....

Reply #11 –
It was at 20 all the way to the shop, and on my local early driving. No pinging, plenty of power, just a super short hesitation when I'd take off normally.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Throttle body question.....

Reply #12 –
Was that before or after tdc?
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Throttle body question.....

Reply #13 –
I let Ray tend to it, and never asked. I'm thinking about taking it back and moving up to 14 degrees. I've heard a lot of people say that they likes that timing setting with the TFS-1 cam and other mods similar to mine. Suggestions?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Throttle body question.....

Reply #14 –
What are you running for total timing and when is it all in?
[SIGPIC][/SIGPIC]:ford:87 Turbo Coupe through the floor sub frame connectors, 5.8 swap Ford racing heads Harland sharp 1.6 rockers BBK shorty swap headers 2 1/2 BBk X pipe magnaflow ler's. Megasquirt 2 with 36lbs injectors on hurricane intake with 4150 throttle body.Tremec TKO 600 Quicktime blowsheild spec stage 3 clutch. 3.73 gears and still not done