Holley vs. Edelbrock vs. Demon?
I am on a quest for a carburetor for my 1967 Ford F-100 and need a few questions answered that I could not find anywhere else.
1. I have a Holley 600cfm on my Mustang (302cu) and get between 19-20 mpg average on the highway so would an Edelbrock 600cfm improve my fuel mileage or decrease it? How about a Demon? (I have heard that Edelbrock carburetors are good on fuel.)
2. Does the Demon keep/hold a tune like the Edelbrock or is it just like the Holley as far as not holding its tune? (Have to tune up my Holley once a year and it feels like I gain 10hp every time.)
3. Is the Demon a good quality carb? I have heard horror stories about people finding metal shavings inside 'em and the company not honoring the warrenty.
I will either go with a Edelbrock AVS, Road Demon, or a traditional Holley, and does anybody have any experience with any of these besides the Holley? The carb will be going on a 352cu FE (bored .030 to 357cu) attached to a 4 speed Borg-Warner T-18 manual transmission. The engine is stock besides the camshaft (203 in. & 216 ex. @ .050), headers, and Edelbrock Performer intake on top. It's not a road warrior apparently but it will be my daily driver and I want it to be trustworthy out on the open road. Oh, one other thing is that the size of the carburetor will be around 650cfm, would I also need mechanical secondaries with the manual transmission or would vacuum secondaries work just as well?
I think that's it, your input would be greatly appreciated. Thanks.