I've seen a few cheap 850 cfm "double squirter" Demons on ebay. Some of my friends say a 750 is more then enough for my 400, but somehow I think a bigger carb is required. What are your guys' opinions ? I have a 750cfm VS carb now. I think it's a 1460 ? I dont know... I just bought it yesterday.

 

Why don't you put bigger jets in it?

:hail:IROC-Z

 

It has #69 jets in it now. I'm afraid that if I go any bigger my gas mileage will go well in the single digits. Right now it's around 9.. and for a broke guy like me that counts a lot.

 

Changed them to #75 today. No difference in acceleration. Mileage went down a little. Hmm... maybe I need a double pumper.

 

Wish I could help but I'm not that knowledgeable on carbs...

 

Houston, we have a problem...

:hail:IROC-Z

 

Ugghh... whoops! I guess the board didnt tell me I have a new PM from you! lol

Not to worry... I'll reply to you right now. Sorry.

 

I've got some good mods on my engine and I still don't feel that my engine feels the need to go to a 850 dp. A 750-770Holley is good IMO.

 

Hey... what do you run the 1/4 ? Also what kind of jets did u use on your Holley ? I have #69s in the front right now and I guess a plate in the back.

 

A 750 with 69 jets?? How does it run? I have a 750 on a 350 and my motor loves the 72's I have now. I tried to go with something like a 65 or so but I could get the motor to run right, too much air to go with the gas. But I also have a single plane intake. Not much of a difference but it was as close as I could get to stock. I can not find my first jets!! If you go with a DP your gas milage will go down as well.