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Author Topic: 1910 Q-jets  (Read 4169 times)

Offline matt69olds

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1910 Q-jets
« on: September 13, 2010, 05:44:58 PM »
I understand the difference between the 750 and 800 cfm castings, what did Edelbrock do different to obtain 850 cfm? Just curious.
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Offline Cliff Ruggles

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Re: 1910 Q-jets
« Reply #1 on: September 21, 2010, 06:32:08 AM »
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
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Offline camaroman

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Re: 1910 Q-jets
« Reply #2 on: October 05, 2010, 10:07:30 PM »
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.
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Offline Cliff Ruggles

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Re: 1910 Q-jets
« Reply #3 on: November 02, 2010, 05:10:04 AM »
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
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Offline von

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Re: 1910 Q-jets
« Reply #4 on: November 02, 2010, 03:28:39 PM »
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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Offline Cliff Ruggles

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Re: 1910 Q-jets
« Reply #5 on: November 14, 2010, 05:03:14 AM »
There is no need to increase bowl capacity.  This is a myth about q-jets that the bowl is too small for high performance use.  They only have one needle/seat assembly to require sufficient delivery from the fuel system to keep the bowl full at all times.

With a good fuel pump, large lines, sump or fuel cell, etc, no problem at all using them for nearly any power level.....Cliff
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