Technical > Spud Miller's Cave

CFM of hilborn injection

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crider:
Almost finished gathering parts to put a real engine together for my car. I have picked up a hilborn stack injector for BBC, 2 7/16 butterflys, and I was curious as to how much air it is capable of moving. Anyone know the CFM of these units? Numbers per runner? Going on a 604" with heads that are doing 410 cfm at .700 lift

dreracecar:
At least 410 cfm per runner. If you cut a 2  7/16  circle and it covers most of the port your fine

crider:
Ok, Thanks Bruce. I wasn't sure how much the dogleg in the runners hurt flow of the manifold

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