How do you take out the emissions on an 87 Chevy 305?

Answer 1

Unbolt the fittings on the hoses off the metal tubes on the exhaust manifolds and the tube on the right side of the engine running to the cat. Use one of the hoses and two of the stock fittings to connect the right manifold to the cat's tube to close it off. On the driver's side, just cut the hose with a fitting on one end to about 4 inches long, shove a big bolt in the open end, and secure it with a hose clamp. Now unbolt the control valve(s) assembly attached to the right side of the engine (the black box with hoses, wires, and tubes running to it). You can leave the wires from it detached, the ECU won't care, just tie them up so the don't get snagged on anything, but make sure you cap off the vacuum hose! The engine light may come on, but at least you know what it is. The air pump that drives the whole nightmare is down on the right side of the engine and has it's own belt, so it can be romved without consequence or modifaction, just take off it's belt and unbolt it. It's a pain to take off the brackets, so just leave them alone, they wont get in the way of anything, but you can if you must. I drove my 87 Caprice for about 8 months with this setup and never had a problem with it. Don't be tempted to mess with the PCV tube on the right valve cover, you're just likely to break the frail gromet and make a big oily mess when you start the car (Trust me). Good luck and enjoy your extra power! Unbolt the fittings on the hoses off the metal tubes on the exhaust manifolds and the tube on the right side of the engine running to the cat. Use one of the hoses and two of the stock fittings to connect the right manifold to the cat's tube to close it off. On the driver's side, just cut the hose with a fitting on one end to about 4 inches long, shove a big bolt in the open end, and secure it with a hose clamp. Now unbolt the control valve(s) assembly attached to the right side of the engine (the black box with hoses, wires, and tubes running to it). You can leave the wires from it detached, the ECU won't care, just tie them up so the don't get snagged on anything, but make sure you cap off the vacuum hose! The engine light may come on, but at least you know what it is. The air pump that drives the whole nightmare is down on the right side of the engine and has it's own belt, so it can be romved without consequence or modifaction, just take off it's belt and unbolt it. It's a pain to take off the brackets, so just leave them alone, they wont get in the way of anything, but you can if you must. I drove my 87 Caprice for about 8 months with this setup and never had a problem with it. Don't be tempted to mess with the PCV tube on the right valve cover, you're just likely to break the frail gromet and make a big oily mess when you start the car (Trust me). Good luck and enjoy your extra power! XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX REVISED ANSWER PLEASE TAKE NOTE TO THIS ANSWER !!!!!!!!!!!!!!!!!!! This question can not be answered in this forum as it is an illegal act. The Federal Government mandates that the emission system on an automobile is Not to be altered or removed from a vehicle and is punishable with a fine or imprisonment.