What's the RPM range and shift point?
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5.4 swap intake options?
- Thread starter blackandblue223
- Start date
What's the RPM range and shift point?
Cobra R lowers can be gotten for $600 and uppers can be made. However, the R intake cannot be used with Navi or C heads.
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Im quite aware of this. The last complete 00R intake I saw on Ebay for sale was 5k.
It was listed for $5k, but what was it's selling price? I just sold a cobra R lower with a Billet, one-off upper for $1k.
It was listed for 5k, it didnt sell. :lol: The same guy keeps posting that thing for sell on Ebay and it hasnt sold that Im aware of but it isnt on there anymore. So it either sold or he is holding onto it for a while before he relists it.
BTW, what else you have laying around?
thats called unobtanium...lolHere's what you need.
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FR500 heads, ported, OS valves and matching custom intake - 2003-04 Mach 1 Registry Owners Club
ironhand is the guy u want to talk to. seriously....he can make anything.
how is ironhands kmember not real? dont think u know what u are talking about.
yeah i know i was looking at your car and u still needed to make a tiny notch in the coil cover to clear master cyl. Other than that it was pure sex.
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I fixed it so now that isnt a problem. That was my own fault and now that isnt needed to clear.
Too much stuff.
Can you shoot me a pm on any 5.4 parts, cams, intake, etc?
I'll do that tonite.
I'd like to be shifting in the higher 6ks or 7k just like my 4.6. I'm kind of just looking for any info about the swap that I can. I don't really know my options for cams, intakes, and heads. I know there's tons of threads about the swap out there, but they all have the same broken link to another thread in them. If any of you guys can give me more info in general, or point me in a good direction, I'd really appreciate it.
You'll want peak power to occur no earlier than 6300 if you plan to shift at or above 6500. Intakes that won't work for you are the stock Cobra and 5.0 intakes. Those that will work are the Boss 302 and Boss 260/290 and also a 5.5" short runner (with adapters they runner length is 7". The 7" intake will reduce mid range power but will allow shorter duration cams to be used.
Regarding cams, when installed at the correct LCs, you'll need intake cams with at least 225 degrees duration to get peak power to occur in the 6k. range.
Now I know the Boss 302 intake seems to be the cheaper option out of those, but I know it's not a direct bolton. What exactly is needed to make it work? Thanks for the info by the way. Any idea what kind of power/torque a good, streetable, n/a 5.4 setup would make?
An inexpensive 5.4 intake option, well two actually - Ford Mustang Forums : Corral.net Mustang Forum
There isn't a 5.4 running with the Boss intake yet, but there should be soon. You can make 400/400 with a stock cobra intake/adapters, 11:1CR and mild cams. When compred to a stock intake a Boss 260/290 intake would make more up top but less tq.
What about heads? Am I better off with my 01 cobra heads, navi heads, or is there some better option?
my first choice would be 03/04s and then either the navi or 99/01s.
This is what you need.
No notching, no super glue, no adapters.
An intake kit designed for exactly what you want.
No notching, no super glue, no adapters.
No notching, no super glue, no adapters.
An intake kit designed for exactly what you want.
No notching, no super glue, no adapters.
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Yes, if someone was to choose the easy way out they could go this route and besides, the Boss 260/290 intakes look so darn good. See how they compare to the hideous and extremely lightweight Boss 5.0 intake on the right? Disgusting isn't it?
Seriously, the Boss 5.0 intake is a great option and very inexpensive if you have the ability to do the work yourself or have access to someone that can help.
The option Birdman offers is a bit more costly and weighs about 5 times more but it is a bolt on that matches up perfect to C heads. However, on Navi headed engines it's ports are way to small which causes a great drop in velocity at the point where the intake and head meet. I firmly beleive the Boss 5.0 is a better intake for Navi headed 5.4s whereas the Aussie Boss intake may be better for those with C heads.
Seriously, the Boss 5.0 intake is a great option and very inexpensive if you have the ability to do the work yourself or have access to someone that can help.
The option Birdman offers is a bit more costly and weighs about 5 times more but it is a bolt on that matches up perfect to C heads. However, on Navi headed engines it's ports are way to small which causes a great drop in velocity at the point where the intake and head meet. I firmly beleive the Boss 5.0 is a better intake for Navi headed 5.4s whereas the Aussie Boss intake may be better for those with C heads.
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I have reichard racing intake manifold adapters so u can run a 4.6 intake on a 5.4 motor. Makes like a lot easier. U actually can make it fit under a stock hood
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...and I've seen 5.4s with intake adapters make just as much or more power than those with the much more expensive Boss 260/290s.
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