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What size primary tube are you guys with similar comos running????

I have a 434 sbc with 11x heads 14.2- 1 compression and spray a plate with up to 400hp

Currently it has 1 7/8 primary with 3 1/2 collectors

Let me know what you guys run Its a Gbody car

thx
 

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If spraying all the time and don't care about the best N/A performance go 2"-2 1/8" steped. If you want a little better N/A and just spray some time a straight 2" works great you could try 1 7/8"-2" also for a more N/A setup. Look into a good collector also.
 
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