4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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What is different with the engine that allows the Cobra to make 320 hp vs the GT 260? I'm not familiar with the 4.6 that much. I was thinking that in the future I'd replace my SN95 with the later model and was considering installing a Procharger and figured the Cobra had more hp to offer to begin with and maybe it's built better to handle the extra power.
Also any other specs for this model would be helpful or tell me the best place to find them will help too...such as stock rear axle, type trans, etc.
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First, let me state that 1999 Cobras had a recall because they weren't producing the right power numbers:
The recall addressed this with:
--New lower intake manifold
--New cat-back exhaust
1999 Cobra has 4 valves per cylinder (30mm exhaust x2, 37mm intake x2)
1999 GT has 2 valves per cylinder (36mm exhaust, 44.5mm intake)
--This is the single most important difference between the two.
I was reading that there is a cooling problem on the 4.6 heads, causing 7 & 8 to over heat. It's a flow problem and can be resolved but they said you have to pull the trans to do it. I would post the link but it's on another board and I don't think that would be to cool.
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