downpipe pix
03-24-2011, 10:49 PM
#41
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Thats a lot of restriction.. Cut 2500HP in half, thats 1250HP now cut the cross over in half, thats 1.25". I dunno if it works like that but I'm just brainstorming... Hell in my build I'd be happy with 700hp not 1250 but that would be nice too!
03-25-2011, 12:49 PM
#43
2.25" is not too small for a crossover tube on any of the street cars on this forum, honestly I think 2" or 2 1/8" would work very very nice. Its all about heat retention and velocity. We plan on making over 2500hp and still will use a 2.5" crossover if that tells you anything, if you want to talk about restriction, how much restriction is in a 2.5" pipe and 2500hp.
I think the crossover should be sized on the motor's airflow (based on CID and approximate N/A VE). I don't think it should matter if your shooting for 2500hp or 1500hp, if the motor is the same (since its only a change in boost level, assuming the same motor and the motor can handle it).
03-25-2011, 02:39 PM
#44
I'm thinkin it may be less of total hp, and more of how much the motor is N/A (since it can perform similar under boost vs N/A). Either way, I'm going to find out how a 2" crossover does on a stock 5.3 (16 gauge, so 1.87" ID).
I think the crossover should be sized on the motor's airflow (based on CID and approximate N/A VE). I don't think it should matter if your shooting for 2500hp or 1500hp, if the motor is the same (since its only a change in boost level, assuming the same motor and the motor can handle it).
I think the crossover should be sized on the motor's airflow (based on CID and approximate N/A VE). I don't think it should matter if your shooting for 2500hp or 1500hp, if the motor is the same (since its only a change in boost level, assuming the same motor and the motor can handle it).
