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1910 Q-jets
matt69olds:
I understand the difference between the 750 and 800 cfm castings, what did Edelbrock do different to obtain 850 cfm? Just curious.
Cliff Ruggles:
The 1910's were standard larger castings with a few simple modifications to them. This included increasing the full open point of the secondary airflaps, tabs bent on them, and two holes added.
Other than those simple modifications, they are not different anyplace than any other large Q-jet casting anyplace.
Rating carburetors for cfm potential also depends on how the tests are performed, at what " of water, etc.
What is more important, is the power level that any particular carburetor can support. We have customers running into the 9's in the 1/4 mile with the smaller "750" cfm castings. Consider this fact when you are wondering if the carburetor you are using is large enough for the application?......Cliff
camaroman:
9's in the quarter with a 750 q-jet is ausome do you have the specific recipe for the carbs doing this i build hi output SBC engines and love q-jets over a holley any day of the week.
Cliff Ruggles:
It would be a full race unit, legal for Super Stock drag racing. We set them up as described in our book, running straight off the jets, with quite a few speficic modifications for fuel control (venting) and specific calibrations exactly for the application.....Cliff
von:
On the drag race units, are there any modifications on pre-'75 carbs to increase bowl capacity, such as drilling transfer passages from the bowl to adjacent cavities? Enlarging POE well restrictions to make the POE wells effectively an addition to bowl capacity?
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