Is anyone running or have used a 650 Mighty Demon on their stroker 340/416? My motor specs are; 10:1, Air Gap, E-heads, Voodo hyd., 226/234 @.050-.494/.513, 727/2500 stall, 3:91. Street driven E-body.

Mighty Demon #5282010GC.

Demon carb selection is by the cam's duration. If you get the wrong carb for the application, you'll neverget it tuned...

I'm running two of those on my 414 cube smallblock!

I would go with a 750cfm mighty demon

I have a 825 on my 408 stroker. I would not buy another Barry Grant Carb. The quality control is bad, I have had to disassemble it twice to clean metal shavings out of it. At this point I'm happy with how it performs. You just shouldn't have to take a new carb apart to clean it so it will work right. This is not an isolated issue.

Why? Were you previously running a 650 Mighty Demon?

It's not a 340/416 but I am running a 650 MD on my mild 383 and LOVE IT! I bought mine from Don at FBO and only had to tune it once per his instructions. It does not stumble, stall, or anything like that...it just goes. Runs a wee bit on the rich side, but does not burn the eyes and I would rather be rich than lean.

It has no choke so on cold start up you have to feather it for about 30-40 seconds or so...no big deal really i don't like driving it unless she's warmed up anyways.

A lot of percieved carb issues are actually timing related...

Demon has had som QC issues, but Don pulls it apart and inspects it and jets it to you cam and engine size. I went with the 650 for the throttle response it is pretty snappy. I could probably use a 750 for better top end, but this car is mostly street driven.

My 650 MD runs great

Yup.....I love these things. YOu can tune them 8 ways from sunday!

A BG 650 is good for a 383, unless you are trying to spin the rpm's up real high.

I was recomended to go 650 from Don and I'm glad I did. Just a blip and the car has really nice throttle reponse and can annilate the tires if I wanted to. I have heard and read alot of bad stuff about Demons, but honestly I have not had any major problems.

Most problems i have seem are usually timing and too BIG a carb.

Demon underrates there carbs the 650 cfm demon would flow aroun the 720 cfm mark. That being said i have a 750 speed demon on my 408 SB. I love the carb runs great now. However, when i frist tryied to fire the motor with this carb it was bumbing fuel. Long story short i took the carb apart lots of small metal debris in the carb some loose must was flakes still attached to the metering block and etc loose screws holding the floats. I called demon i sent the carb to them they rebuilt there cost and shipped it back. The guy i talked too said that their quality control was not good and they had alot of problems but got them straightened out" don't know if that is true or not" I will use demon again but just be carefull and inspect you carb when you get it. I can see alot of old demons carbs just laying on the shelf they don't move like the holley's OK mayeb this wasn't that short

I had enough with Demons and the issues. i run the Street Avenger 870VS on the street 4" stroke engines I do. the 650 Demon is a wet flow rating, so it doesnt flow 720cfm, but 650 with fuel in the bowl, as opposed to the old Holley and Edelbrock dry cfm, where a 650 4150 Holley really will flow about 610cfm with fuel in the bowls. The Avenger Holleys are wet flowed too, and the 4" stroke engines like larger carbs.