Engine Diagram Chevy Small Block 305. Have coolant leak at the back of the engine that I am trying to identify

I would check the heater hoses that go into the firewall for your heater core. Seems like they have an issue where they come off of the engine with plastic elbows.

Are you sure you have the correct engine model number? What is the year and the make of the car? That makes a big difference as the 305 is a later model engine.

Anytime you change the cam shaft you must change the lifters as well. But if you are asking if it is a direct replacement part, the answer is yes. A small block chevy is a small block chevy. A 283 cam will fit in a 400 block or any other block in between.

as it is the basic 305 block the differences may be fuel injection over carburettor which may require sensor attachments but basically the engine should just slot in place.

This method is good for the firing order on all chevy small block v8 engines from 265 cubic inches to 400 cubic inches. This would include 265, 283, 305, 327, 350, 400 cu. in. chevy small block v8 engines.

Let's cover some safety concerns first. If you try to troubleshoot a mixed up firing order with the engine running, you could be in for a serious shock,.. literally. You can do it, with certain precautions, but you really don't need to check the firing order with the engine running. You definitely don't want to try checking the firing order if you are wearing any kind of pacemaker or sensitive electromechanical prosthesis. The voltage coming out of the ignition coil is in the thousands. Common sense dictates that you wouldn't stick a knife in an electrical outlet, so you wouldn't want to take chances with being shocked by the electrical discharge from your classic chevy's ignition coil either. See the diagram:




The firing order, which should be cast into the intake manifold, for the chevy small block V8 is 1-8-4-3-6-5-7-2. The firing order is the numerical sequence in which the spark plugs are fired. The insertion position of each spark plug wire around the circumference of the distributor cap can be found according to a clock face. The insertion sequence determines the firing order. The firing order is followed clockwise around the distributor cap starting from the 6:30 position with the 6:30 position being the number one cylinder spark plug wire.

On classic chevy small block engines that use ignition breaker points instead of electronic ignitions, the number one cylinder is the one immediately clockwise of the small metal sash cover on the distributor cap. The firing order starts here. There is no sash cover on the distributor cap for GM HEI electronic ignitions, and the firing order is the same, but starting at the 5:30 position.
The firing order makes sense if you know how the cylinders are numbered. The number one cylinder is the front most on the drivers side and 2 being the front most on the passenger side. From front to back, the cylinders are odd numbered on the drivers side, and even numbered on the passenger side.

Additional details HERE.

Hope helps (remmeber rated this).

Look at the vin # from outside the car through the windshield on the bottom of the drivers side. The 8th digit in the vin # is the engine code. You should be able to look it up on the internet. I want to say 175hp but i'm not certain. It is usually a letter. For example a small block 350 for certain years is the letter M and I believe small block 305 is P.

the coil is in the distributor cap,,

almost every rear drive drive full size used the 305 V8, so u can get an engine from a Buick La sabre, Pontiac bonneville and firebird, also Oldsmobile 88, and don't forget Camaro. any 305 chevy V8 will bolt in, also the 350 V8 will bolt in, this is a much better choice..

With what was given try to tighten hose if still leaking try replace that hose may be old and cracking