GT40 intake good enough?

91evilstang · 08-25-2001, 02:51 PM

I recently aquired a set of edelbrock preformer heads from a friend they are the 1.90 int valves any way im now looking into intakes and another friend of mine has a used GT40 for $400 and i was wondering if the GT40 would flow enough to be farily equaly matched with the heads.Money isnt a real big deal so $200 more for something that is going to preform alot better is worth it for me,but on the other hand if i can save $200 and have little or no diffrence compared to a new intake of a diffrent brand then COOL!Besides the GT40 looks really cool.Any imput appreciated.

------------------
91GT Flowmaster 2 chambers,off road H pipe,mac equalength headers,F303 cam,high lift valve springs ,svo 1.6 roller rockers,19*timing,410's,BBK cold air kit,hurst shifter, Pullys,World class T5 MSD 6al box. Ran 13.5@101 with stock headers and air box.

Unit 5302 · 08-25-2001, 04:36 PM

There is so very little difference in performance between the GT-40, Cobra, and the Explorer intakes, it makes it hard to justify spending the extra money on the GT-40. Yeah, it looks cool, but honestly there will be no performance gain from one to the other. Actually, if you want to get technical, all three use the exact same lower intake. The upper is the only difference.

Explorer used $200-250
Cobra used $250-300
Cobra new $400

It's up to you, but for performance, the TFS intake costs the same as the used GT-40 you are thinking of buying, and it will flow quite a bit better.

That aside, the GT-40 intake is a solid piece, and it will work just fine with those heads.

91evilstang · 08-26-2001, 01:59 AM

Thanks for the reply.So if i decided to go with a trick flow what size t/b would you recomend? thanks again in advance for any reply.

------------------
91GT Flowmaster 2 chambers,off road H pipe,mac equalength headers,F303 cam,high lift valve springs ,svo 1.6 roller rockers,19*timing,410's,BBK cold air kit,hurst shifter, Pullys,World class T5 MSD 6al box. Ran 13.5@101 with stock headers and air box.

exgmguy · 08-26-2001, 07:13 AM

The GT-40 will work well. It makes a lot of torque. Some of the other, newer intakes make more top end power but less low end torque. People generally only pay attention to the peak hp number and nothing below that.

I believe the best long runner intake available right now is the Holley systemax.

A 65 mm throttle body will do just fine.

FWIW, I run a GT-40 intake and a 65mm Motorsport throttle body.

------------------
1988 Mustang GT
11.8 @ 123 (7/14/01)
1992 BadAzz Wrangler
1993 Explorer

See my car at: www.mustangworks.com/cgi-bin/moi-display.cgi?179

cojonepony · 08-26-2001, 11:09 PM

I'm running the GT-40 and 65MM T-Body along with AFR 165 heads and its a nice, torquey, streetable combo not to mention that the GT-40 is the coolest looking EFI intake around IMHO. The long runner design helps out in the low end torque department.

fiveohpatrol · 08-27-2001, 12:27 AM

cojonepony, what kinda times are you running with that combo? and what cam do you have,the reason i ask is i have close to the same intake as you and will be going with the 165's as well when funds permit

------------------
88 Notch, B&M Ripper, 3.73's, Ported E7's, Explorer int. w/ ported lower, pulleys, 1.7RR's, BBK headers, off-road H-pipe, flowmasters, subframes, 65mm TB, March ram air ,MSD coil, U/L control arms, 155lph f/p, Crane Adj.FPR, Nitto drag radials, best 1/4--> 13.76@101.4 on a 2.17 60ft

1BAD89 · 08-31-2001, 05:46 PM

If you go with the Trick Flow intake the opening on the intake is 70mm, so I would get a 70mm TB.

------------------
1989 GT, 3:55's, full exhaust, 4 in. hood, Pro 5.0, Have many other parts 4 sale. All parts for sale now.

2000 Camaro SS-A4 =P

1989 Chevy S-10, EX. Cab-383(500+hp on motor), trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

http://www.geocities.com/i8urvpr/JM.html

Mach 1 · 09-01-2001, 09:56 AM

Thats not true, the 65mm is better all around for a N/A, mild street motor, regardless of intake opening size. If the TB were bigger than the intake opening, sure,you would have a problem, but being smaller makes no difference that you will notice, and the increased throttle response of the 65 mm TB is preferred.

And the trick flow opening is 75mm I thought?

------------------
1993 GT/AOD
'93 Mustang GT

LoneRanger · 09-02-2001, 04:41 PM

I own a Trick Flow intake on my '88 and it is a 75 mm opening, I went with a 75mm BBK/Edelbrock throttle body and spacer, and went with a Pro-Flow MAF meter to keep everything 75 mm and the thing is very responsive. I have owned a 65 mm throttle body (by Motorsport) and I didn't notice any difference in throttle response between the two other than I make more power with the bigger opening. I also have EEC IV mass air, Edelbrock aluminum heads with a 1.90 intake/1.60 exhaust, long tube headers and a Comp Cam and the thing screams! Jeff

08-25-2001, 02:51 PM	#1
91evilstang Registered Member Join Date: Mar 2001 Location: lafayette IN USA Posts: 48	GT40 intake good enough? I recently aquired a set of edelbrock preformer heads from a friend they are the 1.90 int valves any way im now looking into intakes and another friend of mine has a used GT40 for $400 and i was wondering if the GT40 would flow enough to be farily equaly matched with the heads.Money isnt a real big deal so $200 more for something that is going to preform alot better is worth it for me,but on the other hand if i can save $200 and have little or no diffrence compared to a new intake of a diffrent brand then COOL!Besides the GT40 looks really cool.Any imput appreciated. ------------------ 91GT Flowmaster 2 chambers,off road H pipe,mac equalength headers,F303 cam,high lift valve springs ,svo 1.6 roller rockers,19*timing,410's,BBK cold air kit,hurst shifter, Pullys,World class T5 MSD 6al box. Ran 13.5@101 with stock headers and air box.

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08-25-2001, 04:36 PM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	There is so very little difference in performance between the GT-40, Cobra, and the Explorer intakes, it makes it hard to justify spending the extra money on the GT-40. Yeah, it looks cool, but honestly there will be no performance gain from one to the other. Actually, if you want to get technical, all three use the exact same lower intake. The upper is the only difference. Explorer used $200-250 Cobra used $250-300 Cobra new $400 It's up to you, but for performance, the TFS intake costs the same as the used GT-40 you are thinking of buying, and it will flow quite a bit better. That aside, the GT-40 intake is a solid piece, and it will work just fine with those heads.

08-26-2001, 01:59 AM	#3
91evilstang Registered Member Join Date: Mar 2001 Location: lafayette IN USA Posts: 48	Thanks for the reply.So if i decided to go with a trick flow what size t/b would you recomend? thanks again in advance for any reply. ------------------ 91GT Flowmaster 2 chambers,off road H pipe,mac equalength headers,F303 cam,high lift valve springs ,svo 1.6 roller rockers,19*timing,410's,BBK cold air kit,hurst shifter, Pullys,World class T5 MSD 6al box. Ran 13.5@101 with stock headers and air box.

08-26-2001, 07:13 AM	#4
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	The GT-40 will work well. It makes a lot of torque. Some of the other, newer intakes make more top end power but less low end torque. People generally only pay attention to the peak hp number and nothing below that. I believe the best long runner intake available right now is the Holley systemax. A 65 mm throttle body will do just fine. FWIW, I run a GT-40 intake and a 65mm Motorsport throttle body. ------------------ 1988 Mustang GT 11.8 @ 123 (7/14/01) 1992 BadAzz Wrangler 1993 Explorer See my car at: www.mustangworks.com/cgi-bin/moi-display.cgi?179

08-26-2001, 11:09 PM	#5
cojonepony Registered Member Join Date: Feb 2000 Posts: 132	I'm running the GT-40 and 65MM T-Body along with AFR 165 heads and its a nice, torquey, streetable combo not to mention that the GT-40 is the coolest looking EFI intake around IMHO. The long runner design helps out in the low end torque department.

08-27-2001, 12:27 AM	#6
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	cojonepony, what kinda times are you running with that combo? and what cam do you have,the reason i ask is i have close to the same intake as you and will be going with the 165's as well when funds permit ------------------ 88 Notch, B&M Ripper, 3.73's, Ported E7's, Explorer int. w/ ported lower, pulleys, 1.7RR's, BBK headers, off-road H-pipe, flowmasters, subframes, 65mm TB, March ram air ,MSD coil, U/L control arms, 155lph f/p, Crane Adj.FPR, Nitto drag radials, best 1/4--> 13.76@101.4 on a 2.17 60ft

08-31-2001, 05:46 PM	#7
1BAD89 Tubbed and Juiced Join Date: Mar 2001 Location: Tulsa, Oklahoma Posts: 1,861	If you go with the Trick Flow intake the opening on the intake is 70mm, so I would get a 70mm TB. ------------------ 1989 GT, 3:55's, full exhaust, 4 in. hood, Pro 5.0, Have many other parts 4 sale. All parts for sale now. 2000 Camaro SS-A4 =P 1989 Chevy S-10, EX. Cab-383(500+hp on motor), trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more! http://www.geocities.com/i8urvpr/JM.html

09-01-2001, 09:56 AM	#8
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	Thats not true, the 65mm is better all around for a N/A, mild street motor, regardless of intake opening size. If the TB were bigger than the intake opening, sure,you would have a problem, but being smaller makes no difference that you will notice, and the increased throttle response of the 65 mm TB is preferred. And the trick flow opening is 75mm I thought? ------------------ 1993 GT/AOD '93 Mustang GT

09-02-2001, 04:41 PM	#9
LoneRanger Registered Member Join Date: Aug 2001 Location: Sterling Heights, MI, USA Posts: 13	I own a Trick Flow intake on my '88 and it is a 75 mm opening, I went with a 75mm BBK/Edelbrock throttle body and spacer, and went with a Pro-Flow MAF meter to keep everything 75 mm and the thing is very responsive. I have owned a 65 mm throttle body (by Motorsport) and I didn't notice any difference in throttle response between the two other than I make more power with the bigger opening. I also have EEC IV mass air, Edelbrock aluminum heads with a 1.90 intake/1.60 exhaust, long tube headers and a Comp Cam and the thing screams! Jeff