HIGH HYDRO CARBON EDELBROCK 1406 PERFORM 1500 MAN TRAN FAILD EMISS HIGH RPM ONLY

Sounds as though your running way too rich, need to adjust the idle air/fuel screws at the front of carb on the base. Installation instruction should tell you how.

You need a subscription to the car magazines & follow
that stuff

Call Edelbrock, I'm sure they have tech people to help you

Use Google & study Vehicle Exhaust Emission
You'll be there for weeks,if you even understand it all
Could type in: High HC Exhaust Emissions or vehicle
hydro carbon problems
When a vehicle gets that old your close to mechanical
issues that aren't worth fixing

You need a matching manifold or an adapter. Most any auto parts house will have one.

Hydro Carbons are usally from an engine missfire. It may be that it is such a sligh miss that you cannot feel it. What is your timing set at? I would try setting it at 2* advanced and see what that does for you.

your timing marks are on the dampener pully and you need a timing light to perform the timing of the engine and i am not sure if you have a gas or diesle so just let me know and i will let you know if i can help you

Hello snowcat426a:Not knowing for sure thing like altitude or if Calif. emissions here are all the specs. 318 w/2bbl. carb. man. or auto trans. 12 @ 750 rpm. with California emissions auto or man. trans. 16@700 rpm high altitude with auto or man. trans 16@700 rpm. If equiped with a 4 bbl carb. the specs are as follows. 4 bbl.stand trans 12@750 .with automatic 16@750 rpm. With California emissions stand. transnission 16@750 rpm. Automatic specs for California emission are not available.Heavt duty specs. man trans, 8@750 rpm.auto is the same as the man. transmission specs. Should you need further help just ask. please leave rating as this helps with feedback. Thank You for using FixYa. Roger

Throttle body, IAC or EGR valve.

the egr is usually located near the intake manifold to get down your coolant temperature flush your cooling system, get a lower temperature thermostat, and also get something to clean out the carbon out of your cylinders, a fuel system cleaner. then try it again you should have different results

YOU COULD TRY SOME FUEL SYSTEM CLEANER TO CLEAN ALL THE CARBON DEPOSITS OR U MAY NEED TO REPLACE LAMBADA SENSOR OR YOUR CATALYST