Cobra Replica Intake

[Mafia Mustang]

Hey guys,

I bought a polished cobra replica intake for my 1990 5.0 I installed it on the engine I had just built and it leaked coolant out of my exhaust when I started it . I suspected it to be the heads or the block so I got an 86 block with the heads on it and installed the intake and when i started it the same thing ( talk about a bummer lol ) so I think the lower intake was machined wrong or something .
well i just bought a gt 40 lower intake off e bay will the upper intake bolt to this??

Thanks you guys I value your input.:SNSign:

 

[GTOreturns]

yeah I think there the same.

 

[fritzPSD]

yes a GT-40 and Cobra lower intake are the same.

 

[4G-KDMP]

Hey guys,

I bought a polished cobra replica intake for my 1990 5.0 I installed it on the engine I had just built and it leaked coolant out of my exhaust when I started it . I suspected it to be the heads or the block so I got an 86 block with the heads on it and installed the intake and when i started it the same thing ( talk about a bummer lol ) so I think the lower intake was machined wrong or something .
well i just bought a gt 40 lower intake off e bay will the upper intake bolt to this??

Thanks you guys I value your input.:SNSign:

it will bolt right up.

 

[71swing]

I would find the source of the problem before investing more money. What if it is not the intake. Then you just bought a gt40 lower which is the same as the one you have for nothing. would be a waste of a few 100$.

FOR EXSAMPLE: back in day when I was rebuilding my motor out of my first mustang. I made the mistake of hooking the coolent line for the back of the egr spacer to a vacumm sorce for the intake. It sucked the water right out the tail pipe.

So I took it all back apart to find the problem. I rebuilt this same motor three time in 2 days to only find out that I had 2 hoses switched around.

 

[Blandnuts]

Listen to what 71swing said.... Check those coolant hoses

The coolant tube on the passenger side lower intake would need to be capped off. You don't have the spacer on the cobra intake that's found on the regular 5.0 intake. This spacer has collant running through it, so you might of hooked these up to a vacuum line.