What size vacuum fitting on the back of an Edelbrock carburetor?
1/4-18″
Edelbrock part #8080 Brass Hose Fitting is a 1/4-18″ NPT fitting with a 3/8″ barb. This Fitting will fit the rear vacuum port of all Edelbrock four-barrel carbs.
Where do the vacuum lines go on a Edelbrock carburetor?
Passenger side vacuum port goes to distributor. Use large vacuum port at back of carb for brakes. Large port in front for pcv.
What is timed vacuum advance?
The added ignition timing from the vacuum advance allows the lean cruise mixture to achieve as complete a burn as possible during the power stroke and maximize engine efficiency. With the engine turning highway rpms of between 2000-3000 rpm and the throttle cracked ever so slightly, manifold vacuum shoots way up.
Does HEI distributor need vacuum advance?
See all 6 photos In a GM HEI distributor, vacuum advance is limited by the length of the advance slot. The further the rod travels, the more spark lead the unit provides. Original GM vacuum advance canisters can provide as much as 25 degrees, and possibly even more.
Does vacuum advance go to ported or manifold vacuum?
At idle, the engine needs additional spark advance in order to fire that lean, diluted mixture earlier in order to develop maximum cylinder pressure at the proper point, so the vacuum advance can (connected to manifold vacuum, not “ported” vacuum – more on that aberration later) is activated by the high manifold vacuum …
What is a ported vacuum?
Ported vacuum is vacuum that is low at idle and increases as you give it gas. Attached to your distributor it will cause the vacuum advance to move quickly to increase performance and drop off when you let off on the gas for a smoother idle.
How do I contact the Edelbrock Factory Tech line?
If you have any questions, give a call to our toll-free Factory Tech Line Monday-Thursday 7:00 am – 4:45 pm PST and Friday 7:00 am – 3:45 pm PST: 1-800-416-8628. Do I have to run any special oil with Edelbrock hydraulic flat tappet cams?
Do Edelbrock performer rpm camshafts require an adjustable valvetrain?
All Performer RPM camshafts require the use of adjustable valvetrain. If the heads have rocker studs they must be screw in style. Will not work with pressed in studs unless the rocker arm studs are pinned/or studded. What setting should I use on my timing chain set when installing an Edelbrock Camshaft?
Where is the vacuum advance port on a 1406 600ccm carb?
Just watched an Edelbrock installation video for the 1406 600cfm carb. On the front of the carb are two vacuum advance ports with the port on the left (passenger side) being slightly higher than the port on the right (drivers side.)
Should ededelbrock lifters be pumped up before installation?
Edelbrock lifters are an anti-pump lifter design, these lifters should not be pumped up, primed, or soaked in oil. If the lifters get pumped up before the installation, the lifters will become solid and you will not be able to adjust the lifter preload, the valve will just be opened when valve adjustment is performed.
