Will the GT-40 NOT P heads have EGR and AIR ports that will work with the stock Mustang's systems? I know the later Explorer manifolds do not have the EGR passage in the middle.
You could just look for an early 1996 explorer and see if it has standard GT-40 heads.
Will save you in cost over the P heads as you can use any standard Mustang header.
Still need to upgrade the springs
Will the GT-40 NOT P heads have EGR and AIR ports that will work with the stock Mustang's systems? I know the later Explorer manifolds do not have the EGR passage in the middle.
What about spark plugs can I carry over the ones I have on my car now they are NGK v power
Can I reuse my factory upper to lower manifold bolts or are they a different length
They (and the P's) do not have the thermactor air ports. Only the Cobra Gt-40's have the thermactor ports.
Both have the EGR passages. The later manifolds just don't have the passage.
I was hoping the earlier ones had the thermactor air ports. So this swap fails at a good emissions visual inspections and will throw the code for a clogged crossover pipe, right? Do we have any work around a for this missing feature?
I think I am guilty of derailing or at least side tracking. Sorry!
Re routing the AIR straight to the cats or capping off the unused outlet of the divertor valve should pass the sniffer, and only a Mustang/Ford savy inspector would notice the crossover pipe gone from way back there. But such folks still exist.
I do not know if the accessory bracket holes in the head line up with the cross over tube's bolt holes. If so. it would still look right. I do not think using JB Weld to hold the pipe on is a great idea.
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