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Old 02-15-2021, 10:55 AM   #37
Kilohertz
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Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: Let's start a junkyard fuel injection discussion

Quote:
Originally Posted by itslow View Post
What the heck carburetors are you trying to put on your flathead intake?
I was trying to get more performance by using a 4 bbl manifold, but both manifolds I have were made for the 4 bbl carbs from the 50's, the small base Carter WCFB and Rochester 4G, again small base. These days they are rare, and to date I have only found a couple but they were the larger bore, higher CFM, not ideal. I could buy the adapter plate but again, a new Holley 390 is $1100 here, and used ones aren't around.

Ken, your lean out issue, is it possible the injectors were too high flow rate? I have read if the injectors are too small they max out on duty cycle and can't provide enough fuel, maybe the same happens on the other end...Just a thought.

Cheers
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1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.
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