ANSWER: Edelbrock cylinder heads utilize the same basic spark plug specification. However, there are four important details that you need to know when selecting the correct plug. 1.) Reach: This is the threaded portion of the spark plug that reaches into the threaded portion of the cylinder heads. a. Always select a 3/4 reach spark plug with your Edelbrock heads. 2.) Thread Diameter: This is the size or diameter of the threads. Edelbrock heads are drilled and tapped to accept a 14mm diameter spark plug. a. Always select a 14mm thread size for use with Edelbrock heads. 3.) Gasket or Washer Seat: This is the portion of the plug that seats onto the mating surface of the cylinder head. All Edelbrock cylinder heads utilize a flat, gasket or washer seat. DO NOT USE A TAPERED SEAT PLUG, as this can crush threads in the cylinder head and cause problems down the road when changing your plugs. a. Always be certain that you are using a gasket or washer seat. 4.) External Hex Diameter: This is the portion of the spark plug in which you put your socket on to install or remove the spark plug. a. Edelbrock recommends using a 5/8 diameter hex for optimum clearance.
TECH TIPS: 1.) Always use a small amount of automotive grade anti-seize on the first five or six threads of the plug. This will allow for easy removal and reduce the chance of the plug seizing into the cylinder head. 2.) Proper Torque is important when installing any automotive component and spark plugs are no different. Edelbrock recommends ten pound feet of torque (10) when installing your spark plugs. 3.) If you do not have a torque wrench, you can use this simple method; install the spark plug finger tight and with a socket / wrench, rotate clockwise an additional 3/8 1/2 turn.
RECOMMENDED SPARK PLUGS: Champion: RC12YC NGK: BKR5E Autolite: 3926 Bosch: F6DSR AC Delco: R45TS (factory OEM plugs, they burn a little hotter allowing better fuel economy)
10-12 degrees
A 2-plane manifold such as the Edelbrock Performer or similar would be a good choice.
Im gonna say it will be fine, I have a 84 with a 307, just got a performer 600 carb with the 2711 performer intake! You should be good to go, its when you go higher. Although, they say dont go any higher than a 600 on a stock 350 olds :/
The edelbrock performer 350 crate engine has 310hp/375ft-lbs. So if you have the same cam, compression, etc., it should produce close to that.
the edelbrock website should have that info.
It should be preset from the factory
go to google or yahoo and do a search for "vacuum line routing edelbrock"..... it should give you alot of pages. choose the one from edelbrock.
The Champion RC12YC spark plug is one of the most preferred spark plugs. Victor series cylinder heads are also widely used especially by racers.
The Edelbrock carbs work very well right out of the box, so if you have the correct intake manifold it should bolt right on with no problems. The Edelbrock website has all the info you need for tuning and connectivity.
With the edelbrock, use the vac line on the carb itself, It will be a small bore, 1/4 ( about ) vacuum line, and should be on the front of the carb.
With the mods you describe I would suggest you start at about 10 to 12 degrees btdc. you may have to play with it to get it just the way you like it. Hope this helps. Mike
It should have electronic ignition.