This is topic FR500 Heads??? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 9COBRA8 (Member # 6) on :
 
Okay, I need some advice-

Here is the deal... I have my bottom half of the motor done but I still need heads for my Cobra. I was trying to get Griggs to redo my orginial Cobra heads that had a shit load of work done to them but he now tells me that they can't be salvaged due to the fact that they are warped, so I have the following choices that I need help deciding:

1. Get some Lincoln Mark VIII heads, strip them down, replace the internals, and do a shit load of work to them since they don't flow as well as the Cobra heads. Cheaper cost...but then again, If I do a lot machine work, might cost me more in the long run...

2. Find some used Cobra heads that is starting to be hard to find, get the same work done to them and get things back to the way they were. Cost is a little bit more...but the ETA is about 2-3 weeks since this has been done before...

3. I was told that Ford Motorsport came out with new FR500 heads for the 96-98 Cobra to match the intake which supposedly has better air flow, less machining work, however, this is something new so I am not sure if I want to go this route... Cost is cheaper only because there is less machine work.

What would you do? Anyone know anything about this FR500 and if it has better flowing heads than the stock Cobra heads? I don't even know if it really matches the intake for the 96-98 Cobra. Something that I heard. Any input?

[ June 15, 2002, 10:47 PM: Message edited by: 9COBRA8 ]
 

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Posted by 9COBRA8 (Member # 6) on :
 

quote:

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Originally posted by STOKED:
What about Navagtor heads from the 5.4

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quote:

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Originally posted by MilesMerk:
Have you looked into the ford motorsport catalogue? If they have it, it should be in there. If its there, and you can get a part #, then call ford motorsport and get some more details... new parts may or may not be cheaper than reconditioning old parts... look into all the related cost and weigh the performance /reliability vs the extra cost... the cheaper way isnt so much the better way, and the expensive route may be unneccesary...

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Miles, I totally agree with you. I need to find out about these FR500 heads and call Ford on Monday and see whats up. If they are really better than the stock Cobra heads, then I might have to be the first to try them out.
 

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Posted by 9cobrasnake9 (Member # 575) on :
 
fr500 heads are for 99-01 intake setup. I suggest getting these heads and finding a 99-01 Cobra intake. Pre fix intakes are for sale all over the place.
 

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Posted by 9COBRA8 (Member # 6) on :
 

quote:

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Originally posted by 9cobrasnake9:
fr500 heads are for 99-01 intake setup. I suggest getting these heads and finding a 99-01 Cobra intake. Pre fix intakes are for sale all over the place.

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That sucks! I was trying to stay away from switching intakes. Humm... I guess I have to stay with the Cobra heads, I guess I need to keep looking... I heard that have great flowing heads but the intake setup needs some work... Humm...

Thanks-
 

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Posted by MilesMerk (Member # 27) on :
 

quote:

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Originally posted by 9cobrasnake9:
fr500 heads are for 99-01 intake setup. I suggest getting these heads and finding a 99-01 Cobra intake. Pre fix intakes are for sale all over the place.

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quote:

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Originally posted by MilesMerk:

quote:

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Originally posted by 9cobrasnake9:
fr500 heads are for 99-01 intake setup. I suggest getting these heads and finding a 99-01 Cobra intake. Pre fix intakes are for sale all over the place.

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There you go matt... you needed to upgrade your intake anyway... do the 99+ intake and port the balls out of it, so it matches the flow of your new badd azz heads...

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HAHAHA... Swtich my setup so I can try and compete with WIKD 281?!?

Which do you think will flow better if all is said and done, a perfect 98 Cobra head and intake setup or a perfect 99 FR500 head and intake setup? Remember, this is N/A, so more air is more power...
 

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Posted by MilesMerk (Member # 27) on :
 

quote:

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Originally posted by 9COBRA8:

quote:

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Originally posted by MilesMerk:

quote:

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Originally posted by 9cobrasnake9:
fr500 heads are for 99-01 intake setup. I suggest getting these heads and finding a 99-01 Cobra intake. Pre fix intakes are for sale all over the place.

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There you go matt... you needed to upgrade your intake anyway... do the 99+ intake and port the balls out of it, so it matches the flow of your new badd azz heads...

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HAHAHA... Swtich my setup so I can try and compete with WIKD 281?!?

Which do you think will flow better if all is said and done, a perfect 98 Cobra head and intake setup or a perfect 99 FR500 head and intake setup? Remember, this is N/A, so more air is more power...

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I think it would take more than that to compete with wikd281!! Do that and throw a nice shot on it, and yoll be cool... as for the flow... honestly, i have zero idea how well the FR500 heads flowed compared to a 98 head... i havent had any exp/info on them at all.... im curious to see how well the y compare though...keep me posted on what you find.
 

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Posted by WIKD 281 (Member # 40) on :
 

Do they make a 500wet shot? Matt> maybe a dual stage 300 shot setup would do it? he he LOL
Just kidding bro! I think go for the FR500heads from the info. that you have gathered so far> we'll have to check how much and availablity>
There are some guys on the corral that are starting to port the intakes> have to do some research there and find out how much they gained?
Late.

 

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Posted by T-TopTerror (Member # 480) on :
 
If you plan on going with the FR500 heads I suggest the FR500 intake too. Dual mass air sensors and alot more flow.
Otherwise - go with ported cobra heads. I believe retaining/reusing all your stock peices better fits a budget.

Reminder: Problems follow custom setups......
 

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Posted by Mike (Member # 59) on :
 
Ford claims that they flow 20% better on the intake side,and 15% better on the exhaust over production Cobra heads. They are bare,and can use all your stock valves,cams,springs,etc.

Ford part # M-6049-T46 (Bare head right side)
# M-6050-T46 (Bare head left side)


 

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Posted by MilesMerk (Member # 27) on :
 

quote:

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Originally posted by Mike:
Ford claims that they flow 20% better on the intake side,and 15% better on the exhaust over production Cobra heads. They are bare,and can use all your stock valves,cams,springs,etc.

Ford part # M-6049-T46 (Bare head right side)
# M-6050-T46 (Bare head left side)

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