GT-40 lower intake question (small ports)

Dark_5.0 · 01-28-2002, 07:34 PM

The intake ports on my heads are 2 inch, The ports on my intake are 1 3/4 inches.

Do I need to have my lower intake ported for good performance or will it run fine like it is.

What gasket are people running with the GT-40 lower?

I thought the ports on the GT-40 lower would be at least as big as the ports on ported E7's

avbcon12 · 01-28-2002, 08:07 PM

you must port it! if you dont you will get a lot of turbulance and thats not good. you want to port it to maximize velocity.

of the top of my head i think the biggest gasket you can get it a fel pro 1262 (i thinks thats the number)

dont even waste your time putting the intake on if the ports are that different.

hope i helped,
adam

01-28-2002, 07:34 PM	#1
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	GT-40 lower intake question (small ports) The intake ports on my heads are 2 inch, The ports on my intake are 1 3/4 inches. Do I need to have my lower intake ported for good performance or will it run fine like it is. What gasket are people running with the GT-40 lower? I thought the ports on the GT-40 lower would be at least as big as the ports on ported E7's __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

01-28-2002, 08:07 PM	#2
avbcon12 Registered Member Join Date: Jul 2001 Location: West Bloomfield, MI Posts: 391	you must port it! if you dont you will get a lot of turbulance and thats not good. you want to port it to maximize velocity. of the top of my head i think the biggest gasket you can get it a fel pro 1262 (i thinks thats the number) dont even waste your time putting the intake on if the ports are that different. hope i helped, adam __________________ 90 GT black/ grey leather ported GT-40 heads w/ 1.7RR, Cobra intake w/ ported lower, 24# injectors, 190LPH pump, 75mm Pro-M MAF, 65mm TB, K&N panel, BBK long tubes, Off road H-pipe, 2 ch. Flowmaster, Black magic fan, Kirban FPR, 180 deg. T-stat, 3.73's, Steeda Tri-Ax, 130 amp alt. Accell 8.8 race wires/cap/rotor, motorcraft plugs, Factory Five suspension, etc etc etc.... http://avbcon12.stangnet.com

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