stuck Posted March 17, 2009 Share Posted March 17, 2009 Hi all, Hoping somebody on here can save me a lot of time and weeing about. Before I drop the 4.6 in and then worry about exhausts can anybody give me a few pointers please? Can I use the standard exhaust from a 3.5 EFI or will this be too restrictive? If not can I use an aftermarket P38 system (not sure if it will foul on anything) And if I can't use any of the above what can I use? Sorry for all the questions but I'd rather get what I need in advance. Many thanks, Mick. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted March 17, 2009 Share Posted March 17, 2009 P38 manifolds are much different and may not fit (also last time I looked on eBlag they were £££ for some reason ), I'm running tubular headers (probably only designed for a 3.5 or 3.9 though), the stock 3.9 cast manifolds are reckoned to be about the best and not difficult to get hold of. Unfortunately a cast manifold just fouls my engine mount so I had to stick with the headers. Quote Link to comment Share on other sites More sharing options...
stuck Posted March 17, 2009 Author Share Posted March 17, 2009 Cheers for that. Would have thought tubular headers would have been better that the 3.9 castings, you live and learn. Mick. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted March 17, 2009 Share Posted March 17, 2009 Bling != better performance, at the end of the day it's some tubes for the gas to go down so no reason some holes in a casting need be any worse than some holes down some toobs I believe Nige's super-bling JE manifolds start life as stock 3.9 items. Quote Link to comment Share on other sites More sharing options...
q-rover Posted March 18, 2009 Share Posted March 18, 2009 I have some spare 3.9 manifolds if you want them. B) Quote Link to comment Share on other sites More sharing options...
stuck Posted March 18, 2009 Author Share Posted March 18, 2009 I have some spare 3.9 manifolds if you want them. B) I may very well take you up on that! I'll have a rummage in the garage on Friday and will PM you if I can't find anything. Mick. Quote Link to comment Share on other sites More sharing options...
q-rover Posted March 18, 2009 Share Posted March 18, 2009 Well I'm coming to the UK in April and can bring them over. Quote Link to comment Share on other sites More sharing options...
steve_d Posted March 19, 2009 Share Posted March 19, 2009 I have some 3.5's in Hampshire but do not know if they would work. Steve Quote Link to comment Share on other sites More sharing options...
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