Ahhhhh thing of beauty

[Stallion]

Hmm...so those are the two main types of engines? One with a carburator (you prefer) with fuel injection, and the other which is electrical with an electrical ignition? Interesting...

 

[Evolution1980]

No No No.... You start with essentially a engine block that's pretty much ready to go: block, pistons, rods, heads, cam, water pump, intake manifold, etc. Everything except pulleys, oil filter, and fuel delivery system. I guess I should have said fuel delivery before to be a bit more clear. That system can either be done via a carburated setup or via the various fuel injection methods.

So once you choose your method of fuel delivery, then you get the rest of the necessary components, drop 'em in, and go! (more or less) :L

 

[Stallion]

I'm looking up all of these parts to familiarize myself with, but I can't seem to find what a "pulley" is. Could you explain this to me? I don't think it's in the engine itself, but I could be wrong.

So ZZ4 is a carburated engine, whereas not all engines are? I think I'm started to understand that concept of the differences between different fuel delivery systems.

 

[JonM]

Pulley system is on the front of the engine, crank pulley, alternator, waterpump, some have a tensioner and they are all connected with a belt

 

[Stallion]

So pretty much the pulley system just securely connects the engine and other parts? Okay, I understand. And thanks for the pictures!

 

[Evolution1980]

So pretty much the pulley system just securely connects the engine and other parts? Okay, I understand. And thanks for the pictures!

Well not exactly. But close I guess. The pulleys all run other parts of the car necessary to it's operation.

The biggest of the 3 pulleys in the picture, the bottom-right is the main pulley. It is directly connected to the engine. When the engine spins, so does that pulley. That is needed to spin the other pulleys.

The pulley directly above the main pulley is what spins the water pump. The water pump is what 'pumps'/pushes the water/coolant fluid thoughout the engine and radiator.

The other last pulley in the picture (on the left) is the alternator. The alternator is what supplies the electrical power needed to run your car. Think of it like this... the main battery in the car is used to start the car. Once the car is started, that battery is no longer used because the alternator constantly generates the electricity to do everything else, from light up your dashboard, to power you headlights, to power your radio, windshield wipes, power door locks/windows, even supply the power to the spark plugs so they can 'spark'. (The alternator also acts as a battery charger when the engine is running. It helps put back the energy into the battery that was used to start the car...which is A LOT!)

The water pump is the most ciritical of those "accessories" because without it, the engine would overheat and stop running. Similiar to what you've probably seen when people have white steam/smoke coming out of the front of their car. (not exactly the same situation, but close enough.)

There can be more pulleys than just what you see in that picture. If you have air conditioning, that has a pulley associated with it. So does power steering if your car has it.

 

[JonM]

There can be more pulleys than just what you see in that picture. If you have air conditioning, that has a pulley associated with it. So does power steering if your car has it.


Good explanation Ev....and those extras mentioned above...will rob HP

 

[Stallion]

Evolution1980, I can't thank you enough for that explanation. You've cleared up my understanding of pulleys and the system and their functionality. I greatly thank you.

You know, just a little side note, when I read this stuff (for instance you pulley explanation) and start learning about car internals and how engines work and the sort, I have a smile on my face. It brings me join to finally start knowing and understanding what is going on in that machine.

Thanks again!

 

[silver 80]

EVO

Well the temp sensor has been resolved.
The 80 temp sensor is to big for the ZZ4 at least mine is, so I had to use one for an 81 it is smaller and fits just right.
tom

 

[Tom Bryant]

Sweet engine and orange is cool.....But the valve covers have got to go . Why do they do that??

GM Preformance Parts has valve cover adapters that allow mounting perimeter bolt old style valve covers on a center bolt head. A pair of polished LT1, (early '70s) valve covers would look great on that engine. Still available new too.

Tom

 

[Stingray6974]

Here's a pic of Robert Kirk's new engine.

 

[silver 80]

WOW!!!! that is one great looking BB.
crate? what HP? beautiful.

 

[robert kirk]

thanks mike for posting that pic. no it's not a crate motor. its a 468 home built. first day on the dyno it ended up about 500 hp and the same torque. we had to wait a couple of days and did a cam change and ended up with about 550 on hp and torque. hyd roller cam's are great. with out the roller i doubt i would have been able to get it over 500. 10.3 to 1 comp, alum heads, steel crank, rotating mass ceramic coated, 2x4. i also have a 200 shot, hooked to a progressive ladder that is set to start comming in at 3200. i can't wait to get this stuffed in the 71. the only hold up now is the body man. cheers robert

 

[Ken]

Love them two-fours!

_ken