Speed demon carb

muscle72

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“Extreme Energy 292”??

There are:
292H
XE294H
XE295HL

I don’t know if the recommendations are still the same for the Speed Demon line since Holley took them over, but they used to be recommended for use with cams that were under 240@.040.

My experience with them has been that they were a little miserable down low when the duration started approaching that 240@.050 figure.
Yep 292h comp cam l have
 

Aron Gleason

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Dom builds and preps carbs for mainly the race-oriented crowd, and while his business isn't necessarily to the level of notoriety of say Braswell, Dickey, Mike & Bo Laws....he has a solid customer following. Why he doesn't have a full-blown marketing campaign and fancy website, who knows...maybe he prefers word-of-mouth advertising and keeping a lower profile.
His carburetors speak volumes. He's very meticulous when he modifies carburetors, he only uses top quality parts. And every carburetor is made for each customers combination instead of like a big name carburetor company where they build carburetors by the truck load.
 

muscle72

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His carburetors speak volumes. He's very meticulous when he modifies carburetors, he only uses top quality parts. And every carburetor is made for each customers combination instead of like a big name carburetor company where they build carburetors by the truck load.
Ok l see l seen his profile recently.
 

muscle72

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650-700 cfm four barrel Holley is fine on a 383. 9.8 to 1 is what I am running. Plenty of pep. Running 80 jet's in it now it had 74 jetting on primary and 80 jetting metering plate. Changed to 80 jet's on primary and it work's fine now. Just my two cent's.[/QUOTE
if you run a 650 speed demon the 383 will run with 292 high extreme energy comp cam?
 

65Fury440

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I ran a Mighty Demon 850 (annular boosters) on my 440, 509 cam,headers, Eddie Rpm intake.
Ran it for a few years.
I loaned it to a buddy and stuck a 650 Dp Holley on it temporarily.
Throttle response was way better but seemed to choke out above 5k rpm.
Demon carbs were rated wet flow, so they flow higher than carbs rated dry flow.
 

muscle72

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I ran a Mighty Demon 850 (annular boosters) on my 440, 509 cam,headers, Eddie Rpm intake.
Ran it for a few years.
I loaned it to a buddy and stuck a 650 Dp Holley on it temporarily.
Throttle response was way better but seemed to choke out above 5k rpm.
Demon carbs were rated wet flow, so they flow higher than carbs rated dry flow.
I see mighty demons are for radical cams you can and get them to idle better then speed demons.speed demons are for the non radical cams.whats l heard
 

muscle72

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Sold the 850 speed demon recently,though about gettin a 750 speed demon
 

muscle72

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Holley 770 Street avenger handle 292 high xtreme energy cam?
 
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