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Use a 3/32 allen wrench and turn the screw in the vac can clockwise until your idle timing comes up to about 30*. That should help. The best thing you can do for that engine is swap the eddy carb for a carb that's suitable for that cam duration and the vacuum signal it's producing. Quick-Fuel...

CFM Required 757.0601851851852 100% VE CFM Required 696.4953703703703 User 90% VE You may have a great set of heads but to utilize their full air flow potential you need more cam, more compression and a lot more RPM Rounded off and all things considered we would use a Q-750 Mechanical to give...

There are a few basic rules when designing a fuel system with an electric pump, I'll give you the basics but if you really want to do it right all the details are discussed in my book. http://www.4secondsflat.com/Demon_Tuning_Guide.html 1. Electric pumps are not suction pumps so they must...

Don't waste your time they don't work, just a Chinese copy of the same carb you have. How did the main body get cracked? Claws are at least 10 years old and had a short life span, there was a reason for this. The Mighty Demon replaced them and is, in my opinion the best carb on the...

Save your money, the Eddy is cracked internally and leaking all the fuel out of it when it sits for a while. They're all cracked and should all be used for door stops.

K3522: If your getting detonation then we need to go over your specs again. That distributor is designed to run with the vacuum line connected to CONSTANT manifold vacuum, as they should be on any Performance application. Detonation is caused by excessive heat in the chamber, are you...

Proform - Bad Chinese copy of a Holley HP Eddy- Mid range lean out, no flow, no power, antiquated design If I used a Windshield Washer motor, painted it purple with dual hoses and a heater fan, took a picture, put it in a glossy catalog and called it a "Fuel Injected Blower System" would you...

Call Proform techline...Oh, they don't have one?...geee whiz.... Call Holley.....they won't talk to you because it's not their parts? Geeze so you bought a Chinese main body with no tech support and now you have problems, sorry but I hear this 20 times a week. I'm not flaming you at all...

Make your decision carefully based on facts not opinions Holley Blue will flow at 72 GPH at 7# pressure Holley blue regulator will only flow at 60 GPH at 7# Carter HV Mechanical box stock will flow at 85-90 GPH at 6# Carter HV Mechanical re-worked by FBO willl flow at about 110-115 GPH...

GotDart...see you in October in Baytown for the Big Mopar show, I'll be hanging with Todd Marsh from Marsh Performance at his booth. We'll have a couple of FBO sponsored cars racing.

BG makes the correct spacer for application, Part Number 5282010GC, it's 5.25" tall and goes between the manifold and the air cleaner $499.00

Wow same as an Edel-broke LOL

I don't undestand why you just don't Tune the Race Demon? It's really a little too big for your application you should probably have used a 825 GC or the 875 RS model. We run a 995RS on our 445 CID Dart at 9.70's 138 MPH, we tried to bump the sleeves to a 1050 and it slowed by .2. We had...

Holley Carb $500 Proform Main Body $180.00 Proform Metering blocks $50.00 each Proform Base plate $150.00 What you end up with...a Chinese carb with Holley float bowls. Total $880.00 resale value..$? Mighty Demon $499 resale value Very High! But it's Koo Purple just add a pair of...

$50-$60 is still too much for an Edeljunk, leaking POS. We dump them in the big blue barrel. Edeljunk $289.00 used 1 day Maybe $50 575 Road Demon $319.00 used 2 years $200+ What is the issue here again? Eddy's are easy to tune because they don't have anything to tune, no power, leak...

4 hole spacers move the tork band down in the RPM Range by increasing the venturi length and keeping the A/F mixture directional and holding the particles vaporized deeper into the manifold. They improve idle signal and make low end tuning easier, offering a cleaner crisper idle and better...

Your float may be set a tad high and you may be getting a bit of siphoning on shut down when the temp spikes. Are you running one or more of our Aramid Fiber 4 hole gaskets? Gotta run, I'm on a thrash to get to big race in Canada, Fish needs allot of tuning and maint. Later dudes and...

Interesting comment, we have sold 1.4 Demon carburetors per working day this year. We disassemble each carburetor and inspect it for any of the above mentioned oversights in the manufacturing process. About 1 in 6 has some small problem that we have to adjust or repair, usually bent linkage...