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Old 04-18-2005, 02:11 PM
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305 Sbc

I recently rebuilt the 305 LG-4 sbc engine for my 1984 Chevy Caprice Classic. I got it dropped in and now I'm having some trouble remembering how the A/C pump and the power steering pump are mounted. I've found the home for all of the brackets in the photo except for #2.

One end attaches to the A/C pump and the other end attaches? Also I need to find out HOW they attach to the rest of the brackets. Bracket #3 found a home on the front of the exhaust manifold but otherwise the photo below shows what I have.

You can read more on this build on my other forum at;
http://forums.kurtclark.com/viewtopi...9156a6e807bc32

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Old 04-18-2005, 02:25 PM
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5 and 6 are engine lift brackets. They mount near the intake or head ends. Use them if you want to.

Power steering pump will mount with the upper left bolt being held on with the upper right water pump bolt. That used to be a stud there. The right hand side bolt hole mate with the right most hole on the right head bracket

No. one is the left hand alternator support. Mounts to the head under the alternator.

The rest should fall inline.

Is this a metric chassis?
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Old 04-18-2005, 10:33 PM
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I was able to get the power steering pump bolted on today. I bolted the bottom onto it's bracket and the left side to the bracket on the intake manifold. The last bolt hole didn't go to the water pump, but to the head. If I bolt it to the water pump, it won't bolt to anything else and the pulleys don't line up. I also attached the brace for the A/C to the intake manifold where the bracket for the alternator goes. I still couln't get it to bolt to the bracket on the head. So here is a photo of where I am at.
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Old 04-19-2005, 03:26 AM
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There are some pictures in my photo album of the air con and steering pump.
The long bar installs on the top of the air con bracket to the manifold, in the pic "the_bar" it is just resting there for the pic.
(No pictures you posted show, just boxes with a small cross in the top left corner)
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Old 04-19-2005, 07:07 AM
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Thanks alot Malc. Those photos are exactly what I have been looking for. The shop manual and All-Data tell you how to rebuild them but not how to mount them. I didn't get my digital camera until after I had tore it down past that point. Thanks again.
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Old 05-02-2005, 06:57 AM
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Should I start a new thread?

The EGR and AIR systems are going to be left off. The new Edelbrock intake manifold is EGR-less. The AIR pump wasn't even hooked up and I plugged the holes in the exhaust manifolds, so that system is gone. Are there any sensors, sending units, etc. that I can leave off or unplugged?
Such as oxygen sensor?
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Old 05-02-2005, 08:55 AM
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Ahmm!! What os that color on that engine??It definetly not orange.
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Old 05-02-2005, 09:55 AM
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General Motors Blue
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Old 05-02-2005, 02:15 PM
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If you have dumped the ECM you can chop out the whole harness to the engine, mine is chopped off inside the front right fender.
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Old 05-03-2005, 10:10 AM
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I haven't got rid of the ECM yet. I have a Rochester Quadrajet E4ME carb, won't that need it to run properly?
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Old 06-09-2005, 04:42 PM
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Well I only have a couple wires left that I don't know what they are, but I'm not going to worry too much about them. Until later maybe. Like if they start smoking!
I next have to start on my vacuum lines. No here is what I have been pondering, the definition of a TVS is as follows;

thermal vacuum switch:
(TVS)
[1] measures either air/fuel temperature, underhood temperature, or coolant temperature, or a combination of any two to regulate the EGR valve accordingly.
[2] A temperature sensitive switch that shifts the source of the advance from ported to manifold vacuum when coolant temperature reaches approx 225 deg F
or
thermal vacuum valve:
(TVV) A valve with the same function as a thermal vacuum switch. TVS units, which serve to interrupt exhaust gas recirculation when the temperature is too low, are located in the vacuum line between the ECR valve and inlet manifold or carburetor

Seen as how I am leaving off the EGR, do I even need one? Can I just run a single vacuum line from where the TVS goes into the intake manifold to the purge canister?

Last edited by kringold; 06-11-2005 at 11:53 AM.
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Old 06-11-2005, 12:01 PM
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I do need help with the above question.
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Old 06-11-2005, 04:27 PM
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A.I.R. System

Quote:
Originally Posted by kringold
I haven't got rid of the ECM yet. I have a Rochester Quadrajet E4ME carb, won't that need it to run properly?
Doc here,

If you got rid of the A.I.R. System, and 02 Sensor, you might as well toss the 4eme, cuz it Ain't gonna run right...

The 4 EME has a plug on the Front left and right for Fuel Solenoid, and Throttle positioner..If it's a CCCC system (I think 84 was,) your going to have left over, a plug for the A.I.R pump (3 terminal located somewhere near the front center of the engine), A plug (3 terminal Located near the front right of the Carb.) For The Fuel Solenoid ... an plug For the (2 terminal located near the front left of the Carb) For the TPS..and one on the Left side of the engine for the 02 Sensor (can be 2 or 3 element depending on if it's preheated or not..)

The Carb is dependent upon these Signals to run properly, If the loop is open, It won't Idle well, use tons of fuel, and dog out..

It's kind of an "ALL Or Nothing AT ALL" proposition..

Doc
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Old 06-12-2005, 01:10 AM
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If you are deleting EGR, you could remove the TVS for the EGR and cap the vaccum port at the carb.

At this point, I would suggest switching to a non-CC Quadrajet, pre-1980, so as not to be dependent on those various electronic signals to run properly.
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Old 06-13-2005, 06:43 AM
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Quote:
Originally Posted by docvette
Doc here,

The 4 EME has a plug on the Front left and right for Fuel Solenoid, and Throttle positioner..If it's a CCCC system (I think 84 was,) your going to have left over, a plug for the A.I.R pump (3 terminal located somewhere near the front center of the engine), A plug (3 terminal Located near the front right of the Carb.) For The Fuel Solenoid ... an plug For the (2 terminal located near the front left of the Carb) For the TPS..and one on the Left side of the engine for the 02 Sensor (can be 2 or 3 element depending on if it's preheated or not..)

Doc
All of these are plugged in with the exception of the connection for the A.I.R. pump. Prior to rebuilding, the A.I.R. pump was not even hooked up and working, and the engine ran fine. The O2 sensor is still there and hooked up also. Buying a new carb is not even in the budget, at this point in time. I HAVE to make this one work.
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