If someone wanted use a Victor EFI 5.8 on a 351 and or a 408, what would be the HP and rpm limitation? I realize it will peak sooner with a larger engine but once ported, and not some exotic one off ported piece, but a good quality port job, can make 500-550 NA HP on a 11:1 comp 351 or a 408 with a street friendly tune? What rpm could it support before it becomes a restriction vs something like a Victor Jr EFI conversion? It seems like the runners are definitely short, but not compared to a carb style intake. I'd like to know if it will keep climbing to 7000 rpm with proper supporting hardware or will it start to level off at 6000-6500ish.
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Diabolic
Victor EFI 5.8 Max RPM
If someone wanted use a Victor EFI 5.8 on a 351 and or a 408, what would be the HP and rpm limitation? I realize it will peak sooner with a larger engine but once ported, and not some exotic one off ported piece, but a good quality port job, can make 500-550 NA HP on a 11:1 comp 351 or a 408 with a street friendly tune? What rpm could it support before it becomes a restriction vs something like a Victor Jr EFI conversion? It seems like the runners are definitely short, but not compared to a carb style intake. I'd like to know if it will keep climbing to 7000 rpm with proper supporting hardware or will it start to level off at 6000-6500ish.
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It won't work for high rpm. 
I'll help you out and buy it from you so you can get that Victor EFI Single Plane.
I'll help you out and buy it from you so you can get that Victor EFI Single Plane. -
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