GT40 or Truck upper?

redrider · 12-03-2000, 08:24 PM

I have a 347 short block with ported polished performer heads, Cobra ported polished intake, BBK 1 3/4 long tube headers.

I would like to know if I should replace the Cobra upper with a GT40 or Explores truck intake. Please advise.

Thanks
Red Rider

WADS56 · 12-03-2000, 09:47 PM

Why don't you just port the hell out of the cobra intake that you have? I'm not sure, but I heard that the cobra upper will flow more then the gt40 if you get it fully ported. That will save you money for more mods.

------------------
blown347,free breathing heads and exhaust, solid roller cam, tremec,moser axles, 4.10's, role cage and all the other stuff.
11.8 @ 115 very untuned

macx · 12-03-2000, 11:11 PM

from whatI understand, the explorer is about the same as the Cobra, both of which flow more than the GT-40 which is a little more of a torque / mid-rpm range manifold. If you really want to do something with your Cobra, check into having it extrude-honed.

95mustanggt · 12-04-2000, 10:25 AM

I thought that you could not put an Explorer upper with a Cobra lower...

------------------
White 1995 Mustang GT
Dynomax Cat-Back
Custom H-pipe
K&N Filters w/o Air Silencer
My 1995 Mustang GT

02-04-2001, 03:10 PM

Quote:

Originally posted by 95mustanggt:
I thought that you could not put an Explorer upper with a Cobra lower...

The Explorer, Cobra, and GT-40 all have the same lower intake, GT-40 lower intake. So the three uppers are interchangable

5.0 Coupe · 02-04-2001, 04:48 PM

I used the GT 40 upper intake and was not very impressed compared to the Cobra "Extrude Honed" intake. Comparing the two I did managed to get another 15hp out of it. I had them gasket match to a Felpro 1250 and had the Edelbrock heads ported to match. The GT40 is a nice looking intake, but you can't do much with it.

------------------
89 (GR40 Griggs)Hatch
89 Coupe
90 Coupe

12-03-2000, 08:24 PM	#1
redrider Registered Member Join Date: Apr 1999 Location: seffner, Florida, usa Posts: 95	GT40 or Truck upper? I have a 347 short block with ported polished performer heads, Cobra ported polished intake, BBK 1 3/4 long tube headers. I would like to know if I should replace the Cobra upper with a GT40 or Explores truck intake. Please advise. Thanks Red Rider

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12-03-2000, 09:47 PM	#2
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	Why don't you just port the hell out of the cobra intake that you have? I'm not sure, but I heard that the cobra upper will flow more then the gt40 if you get it fully ported. That will save you money for more mods. ------------------ blown347,free breathing heads and exhaust, solid roller cam, tremec,moser axles, 4.10's, role cage and all the other stuff. 11.8 @ 115 very untuned

12-03-2000, 11:11 PM	#3
macx Registered Member Join Date: Oct 1999 Location: Gordonville MO USA Posts: 448	from whatI understand, the explorer is about the same as the Cobra, both of which flow more than the GT-40 which is a little more of a torque / mid-rpm range manifold. If you really want to do something with your Cobra, check into having it extrude-honed.

12-04-2000, 10:25 AM	#4
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	I thought that you could not put an Explorer upper with a Cobra lower... ------------------ White 1995 Mustang GT Dynomax Cat-Back Custom H-pipe K&N Filters w/o Air Silencer My 1995 Mustang GT

02-04-2001, 04:48 PM	#6
5.0 Coupe Registered Member Join Date: Oct 2000 Location: Tulare, CA Posts: 83	I used the GT 40 upper intake and was not very impressed compared to the Cobra "Extrude Honed" intake. Comparing the two I did managed to get another 15hp out of it. I had them gasket match to a Felpro 1250 and had the Edelbrock heads ported to match. The GT40 is a nice looking intake, but you can't do much with it. ------------------ 89 (GR40 Griggs)Hatch 89 Coupe 90 Coupe