1990 Ford Mustang

Tiny
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  • 1990 FORD MUSTANG
  • V8
  • 2WD
  • AUTOMATIC
  • 92,000 MILES
I have put GT40P head on this 90' mustang LX. These heads have no provision for the crossover coolant tube that runs un the back of the original head. What do I do about this problem?
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Tuesday, June 29th, 2010 AT 1:17 PM

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Tiny
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Hello and thanks for donating

This is a common swap. To fix that issue you will have to go with a different intake. You need the Explorer intake with part # ending in BA. This intake has EGR provisions and can be tapped for the ACT and coolant lines.
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Wednesday, June 30th, 2010 AT 11:48 PM
Tiny
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I have also installed a GT40 tube intake on the vehicle. I see no provision on the manifold for what you are referring to
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Thursday, July 1st, 2010 AT 1:48 AM
Tiny
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Sounds like you have an Explorer lower because if you got a GT40 from Ford Racing it would have those holes tapped. I'm thinking the holes are around 1/2 or 5/8" NPT, but you can tap it for any thread as long as the coolant line will still fit on the barb and you have enough metal around the hole.

You can fabricate this to make it work though. See what size coolant hose you need to fit the fittings on the egr spacer. Then go to Home Depot and find a brass fitting that is barbed on one end (the barb size has to be one that will take the same size coolant hose) and threaded on the other end. Get the one with the smallest threaded male end on it. That's the size tap you will need (to match the threaded end of the barbed fitting). The tap package will tell you what size hole you need to drill. Alternatively, the Cobras didn't come with any coolant lines to the egr spacer. You could simply block off the nipple from the metal tube, and cap off the nipples on the spacer and do without it completely.
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Thursday, July 1st, 2010 AT 1:04 PM
Tiny
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A while back Iasked you what I needed to do to install a set of GT40P heads on a Mustang. You said I wood need a GT40 intake that had a casting # ending in BA. I now have several of those so what do I do now. Also how do I remove all the old tubing on the side of the motor?
Thanks for any help.
Lou
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Thursday, September 2nd, 2010 AT 11:23 PM
Tiny
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http://www.2carpros.com/makes/ford/mustang
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Friday, September 3rd, 2010 AT 12:17 PM

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