I ran a pair of 750 Eddys on my 383 though an M1 tunnel ram. It was as easy to drive on the street as it was fun to drive at the track.

I just bought two new Eddys, and set them both for typical first start, then adjusted my idle and began tuning. I used a pair of vacuum gauges hooked to the carbs, and fine tuned them and idle to get both at a matched vacuum reading. Then after speaking with Eddy Tech line about a huge hesitation off the line they recommended dividing my vacuum reading in half, then installing step up springs for the divided number. In my case my max vacuum reading was 14 inches, so i installed 7 inch steep up springs.

That cured any hint of hesitation, and made the car an absolute animal, with instant go fast anytime I wanted.

As for linkage, I just used an inline non-progessive setup that is readily available through Speedway Motors, and it even allowed the use of the factory throttle cable bracket.

I like your car! It takes me back the the 1980s- a time where we had fun with our fast cars done on a budget. No care for originality and numbers matching. Cars like yours beat up on the rich kids whos dad bought them a brand new Trans Am- smoking the kid with the all show no go 1978 Z-28. Even whoop on that old guy driving his new silver corvette. (Thats how I remember the 80s during my life)

The mid 70's fury were pretty cool. I always thought the kinda had that e body look, with the long hood and short deck lid.

Sounds like fun, what cam did you have?

Hey - right on!

Thanks for the help on the linkage; that's the next piece of the puzzle.....

after reading thru this and with experience with driving dual quads my suggestion would be a pair 1405 edelbrocks. a pair of 1905's would be nice too. either way which ever is the most economical. I drive with two edelbrock 600's.

The tech guys at Edelbrock suggested either one of those carbs; they did say the newer 1905 might be the better choice, just because of the newer fuel atomizers....but otherwise they suggested the same carbs.

Nice call!

i'd like to try a pair of 650avs2's or 750's. the 650's I think would be a great choice, but what I have works so well and I don't want to pop for $700 to buy'em right now. swap meet 1405's can be had cheap but you have to make sure some moron hasn't bubberized them.

Way back many moons ago when I was N/A I had a pair of 750 holly carbs with the small bowls inline,the Mr Gasket linkage was a snap and the 6 cyl cable is the longest. With that Rat you MUST have multi carbs and the Eddies are the path of least resistance. I don't think you sound like a guy that could do 6 strombergs
I drive to many car shows and cars like yours are getting much attention!

https://www.youtube.com/watch?v=CH1GhZBVznQ

Question for those recommending that the carbs open 1 to 1

Have you ran a dual quad setup both ways - 1 to 1 and progressive?

Personally, my car was MUCH easier to drive around town with progressive linkage. I had them 1 to 1 for over 10 years before switching. I'd never go back 1 to 1 for a street car. In anything outside of a competition setting I cant see an advantage with 1 to 1

If you had a regular inline dual quad,, not a tunnel ram intake, your comparing Apples to Lemons
Which brand intake and type, single plane or dual plane, intake where you using?

Offenhauser in-line dual holley 1850s (intake part number 5206 I think) Single plane with a divider between the left and right cylinders.

Just curious and looking for an education. I plan on running a tunnel ram in the future. Bought the offy in 1997 and it runs great. I'm sure it's an outdated design but I have it for the look more than anything.

Carb secondaries have aftermarket plates that allow standard jets instead of drilling or replacing the metering plates

So I guess my question is when you ran a tunnel ram with progressive linkage what was the drawback?

Really bad fuel distribution at low throttle opening starving the front four cylinders bad enough to cause detonation
I cut my teeth on a early cast iron in line dual quad intake off of a 1955 Chrysler 300 motor, Mopar, Dodge, Plymouth, DeSoto and Chrysler used that type intake on almost all the OEM dual quad inline intake set ups they sold stock on production cars. They where not real responsive at low speed light throttle driving also
I had a 1957 Chrysler 300C that I took the dual quad set up off and installed a factory single four dual plane intake and a stock WCFB from a 1957 New Yorker motor I had and that big old tank ran and drove a bunch better with the single four set up
that surprised the heck out of me as I had not noticed the 1957 300 being a bunch different driving than the same size 1957 New Yorker we owned and drove before buying the 300. The New Yorker was quicker from a dead stop to around 60 MPH and then the 300 would drive around it and continue to pull away up to 120 MPH or so when both of them big old boats got to uncomfortable on handling to keep my left foot on the floor on the streets back then
Mopar learned it lesson on the 426 Street Hemi intakes, all of them where a dual plane intake with stagger jetting on the carbs to help on the fuel distribution at light part throttle driving and especially at WOT driving, look at the stock jetting on those carbs

This one had the original grind 292/509 Mopar cam

Thanks, that's a solid vacuum number for that old school cam.