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Discussion Starter #1
I just got some ported FR500 heads, how well will these work with Forced induction vs. the 03/04 head?
 

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Discussion Starter #2
Anyone have any input?
 

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The 03+ have larger exhaust ports but it doesnt seem to make much of a difference. The FR500's are the absolute best of the 4.6 heads and will work very well, especially in ported form.
 

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The FR500s have almost the same intake port as the 03/04 and an exhaust port identical to the 99/01 head. The 99/01 heads work great with FI so the FRs should be even better.
 

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Discussion Starter #5
Thanks for the responses.

Will it matter if the exhaust ports are opened up on the FR500's, the heads i have have been ported already.
 

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no
 

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Where did you get the ported fr500 heads?
 
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