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Search: Posts Made By: pcopp
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Forum: Transmissions and Drivetrain
11-11-2023, 06:19 AM
Replies: 3
Views: 332
Posted By pcopp

Re: Problem with VSS on T56 SWap

I guess I forgot to mention, the VSS on the 1995 T56 is a two wire VSS, not a three wire so there is no reference signal. This VSS is supposed to generate a voltage when car is moving and any...
Forum: Transmissions and Drivetrain
11-11-2023, 06:13 AM
Replies: 3
Views: 332
Posted By pcopp

Re: Problem with VSS on T56 SWap

Good Morning,

Thanks for the reply. I will provide more background.

We spoke to the manufacturer of the VSS/OSS who sells through Hanlon. They were very informative and helpful.

We were...
Forum: Transmissions and Drivetrain
11-10-2023, 04:55 PM
Replies: 3
Views: 332
Posted By pcopp

Problem with VSS on T56 SWap

Harvested a T56 AND Rear from a 1995 Firebird Fornula for our 1986 Z28 5 Speed.

Rebuilt and re-geared the rear end. Works good.

Got the trans installed and got the pressure plate rubbing issue...
Forum: Transmissions and Drivetrain
11-07-2023, 10:57 AM
Replies: 10
Views: 404
Posted By pcopp

Re: Clutch noise on full clutch

Also, there are two upper ears on the T56 transmission at 10:00 and 2:00 o'clock that interfere with the trans tunnel and on the 1986 carbureted 305, the fuel lines hug the top of the trans tunnel....
Forum: Transmissions and Drivetrain
11-07-2023, 10:53 AM
Replies: 10
Views: 404
Posted By pcopp

Re: Clutch noise on full clutch

grove, son has been driving the car for two weeks no with no problems. I can only assume that the 1986 SBC with one piece rear main seal crank must cause the flywheel to protrude into the bell...
Forum: Transmissions and Drivetrain
10-19-2023, 12:31 PM
Replies: 10
Views: 404
Posted By pcopp

Re: Clutch noise on full clutch

OK, problem is solved. When we pulled the transmission, we observed that the clutch fork was rubbing the edge of the pressure plate (see pic)...
Forum: Transmissions and Drivetrain
10-18-2023, 09:46 AM
Replies: 10
Views: 404
Posted By pcopp

Re: Clutch noise on full clutch

So, we pulled transmission last night.

When clutch is depressed, the clutch fork is rubbing the edge of the pressure plate.

So we are using all LT1 parts (master/slave) and of course new...
Forum: Transmissions and Drivetrain
10-12-2023, 12:29 PM
Replies: 10
Views: 404
Posted By pcopp

Re: Clutch noise on full clutch

Thanks. We certainly understood that it was a pull style clutch. Did not consider that it was the fingers rubbing on
the input shaft collar. Makes sense.

We will work tonight to swap entire...
Forum: Transmissions and Drivetrain
10-12-2023, 06:33 AM
Replies: 10
Views: 404
Posted By pcopp

Clutch noise on full clutch

Assisted son with T56 swap on 1986 305.

We used new LT1 flywheel, pressure plate, clutch wity new brass pilot bushing and new to bearing.

we used third gen pedals, 4th gen master and third gen...
Forum: Carburetors
05-27-2023, 10:50 AM
Replies: 9
Views: 716
Posted By pcopp

Re: Help with Curb Idle

Hello NAF,

So I used a degree wheel to verify the cam card and it worked out that the mid point between 50 mils BTDC and 50 mils ATDC put the harmonic balance factory mark on zero on the timing...
Forum: Carburetors
05-25-2023, 04:54 PM
Replies: 9
Views: 716
Posted By pcopp

Re: Help with Curb Idle

So we checked vacuum using the port for the HVAC reservoir.

At curb idle:

Three turns out on both idle mixture screws - vacuum is 17 in Hg
Five turns out on both ims - vacuum is 18 inHg
...
Forum: Carburetors
05-21-2023, 02:43 PM
Replies: 9
Views: 716
Posted By pcopp

Re: Help with Curb Idle

And, the carb has original jets and rods.
Forum: Carburetors
05-21-2023, 02:42 PM
Replies: 9
Views: 716
Posted By pcopp

Re: Help with Curb Idle

Hello Erik69&85

When I originally rebuilt the carb last spring (wanted to get car running reliable before motor rebuild and new cam breakin), I had set the carb up per the FSM specs (idle air...
Forum: Carburetors
05-17-2023, 09:56 AM
Replies: 9
Views: 716
Posted By pcopp

Help with Curb Idle

Helping son get LG4 Carbureted 305 Idling Correctly

We have rebuilt the motor and installed a comp cams RV cam. Broken in, all start-up/break in issues resolved.

I have rebuilt the CCC...
Forum: Tech / General Engine
05-11-2023, 06:29 AM
Replies: 1
Views: 215
Posted By pcopp

Assistance with tuning 86 IROC LG4 ECME

Want to help son finishing tuning of his LG4 with the Electronic QJeton 1986 IROC 5 Speed

We had an overheat issue but after much back and forth and help from the forum, figured out I installed...
Forum: Tech / General Engine
05-11-2023, 05:01 AM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Ding Ding Ding.......

Been meaning to write you a reply but moved on to other stuff......

That was our problem. I screwed up the install of these gaskets. I boroscoped the intake through the...
Forum: Tech / General Engine
02-10-2023, 09:56 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK, will do.
Forum: Tech / General Engine
02-05-2023, 02:34 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK,

I had just finished the above reply when my son asked me take a test drive. The only thing we did was disconnect the MCS solenoid. The curb idle went to 1100 rpm.
Electric fan was jumpered to...
Forum: Tech / General Engine
02-05-2023, 01:57 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Fast 355,

Thank you for this post. I was looking for this kind of input. I am an engineer and my feeling about this car is that we have made enough changes, or have missed something in the set up...
Forum: Tech / General Engine
02-04-2023, 01:05 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

So Im on my dads account right now. (Im That86IROCZ btw). So I dragged him out to do some basic stuff today as its been 10 degrees out give or take.

I went out and checked #1 Spark Plug. It was...
Forum: Tech / General Engine
02-04-2023, 02:30 AM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK,

Thanks for the input....

Our plugs look more white/ashy grey than the ones in your pic

Nothing is happening here until it warms up. I started looking at ordering rebuild kit for this...
Forum: Tech / General Engine
02-03-2023, 03:39 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Ok,

NAF, you are correct that it is the XE256H-10 Cam.

I had already changed every inch of vacuum line on this motor and every line is brand new with spring clamps.

I have carefully put...
Forum: Tech / General Engine
02-03-2023, 02:16 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK, As follow-up to my post #36, I pulled number 1 spark plug today at lunch time (working from home) and it was very white/ash grey. Maybe even worse than yesterday so this car is running very...
Forum: Tech / General Engine
02-03-2023, 05:05 AM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Premium Fel Pro that came in the Engine Rebuild Kit.

We did not put the heat rise block offs in so gas passes under the carb..

We removed the passenger side heat riser valve as it was corroded...
Forum: Tech / General Engine
02-02-2023, 03:41 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

radiator and condenser are new/clean and nothing in between. Condenser not yet hooked up as we did not put the new AC components or hoses in yet. We just in stalled a new Condenser which is capped...
Forum: Tech / General Engine
02-02-2023, 03:36 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK,

Today when we both got home from work, my son pulled number 1 Plug and it was white/ash grey after our run last night. So we are very lean.

I had purchased a new Bosch O2 sensor last year...
Forum: Tech / General Engine
02-02-2023, 01:28 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Car gets hotter as you drive it.

Confirmed correct gaskets with Fel Pro Tech support

Radiator is new, but never know if it was made wrong.
Forum: Tech / General Engine
02-02-2023, 04:14 AM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Hello,

I had rebuilt the motor and installed new Comp Cams RV cam and lifters.
The timing cover was rusty and mark was not legible so I installed new identical timing cover (dorman repro).
The...
Forum: Tech / General Engine
02-02-2023, 12:40 AM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

We installed 2nd tstat and 2nd heavy duty water pump and radiator and heater core are new. All hose new.

block and heads were hot tanked at machine shop. Only chsnges were;

comp cams rv cam...
Forum: Tech / General Engine
02-01-2023, 11:59 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Hello,

I had rebuilt the motor and installed new Comp Cams RV cam and lifters.
The timing cover was rusty and mark was not legible so I installed new identical timing cover (dorman repro).
The...
Forum: Tech / General Engine
02-01-2023, 06:22 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Hello NAF

I spent a fair amount of time today confirming all the parameters.

Over the last year, I procured a full set of vintage tools to rebuild quadrajets including the CCC type.

1. The...
Forum: Tech / General Engine
01-29-2023, 05:31 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Hello All,

Spent more time with the car today.

We pulled all the plugs and all eight had a white burn. I assume this means leaner than richer burn? Pictures don't do it justice, they were...
Forum: Tech / General Engine
01-28-2023, 05:44 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

So, 40 degrees advanced curb idle timing at 700 RPM seems correct based on 10 degrees when the 4 wire is disconnected?

I was less concerned about the 50 degrees at 3000 rpm because it would be 40...
Forum: Tech / General Engine
01-28-2023, 05:20 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

OK,

Here is what I think we know regarding timing......

We set the curb idle at 700 rpm with the 4 wire harness disconnected to 10 degrees advanced. This was Comp Cams suggestion for the cam...
Forum: Tech / General Engine
01-28-2023, 05:09 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

I was looking for an excuse to get an infrared temp gun, now I have it. Good suggestion.

But, I think the water neck is the temp that goes to the ECM. The temp gauge is the sensor near cylinder...
Forum: Tech / General Engine
01-28-2023, 05:06 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Good comments. The car takes a standard rotation water pump vs reverse rotation for the newer model camaro with serpentine. I can confirm I got the right box, but whether the pump in the box from...
Forum: Tech / General Engine
01-28-2023, 03:35 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Sorry, I had a typo in the reply post. I stated heat was blowing cold. That was a brain fart. We have good heat in the car with the fan on and selector set to heat.

I am questioning the new...
Forum: Tech / General Engine
01-28-2023, 03:26 PM
Replies: 68
Views: 2,466
Posted By pcopp

Re: New Cam on 305 LG4

Thank you for the feedback.
Here is the current status:

Complete new cooling system other than the electric fan.
Radiator
Heater Core
Tstat (actually put second one in and test both in the...
Forum: Tech / General Engine
01-28-2023, 08:27 AM
Replies: 68
Views: 2,466
Posted By pcopp

New Cam on 305 LG4

Good Morning,

Helping son with cam break in for a 1986 IROC LG4 305. Stock CCC Rochester which we rebuilt and had functioning properly before engine teardown. Project has spanned last year as we...
Forum: LTX and LSX
04-21-2022, 12:21 PM
Replies: 1
Views: 543
Posted By pcopp

LT1 Swap into 1986 IROC

My son purchased a 1986 IROC earlier this year. Car is LG4 with T-5 Manual He just acquired a 1995 Firebird Formula donor that is LT-1, T56 and LSD Disc Rear. Very nice donor car.
I am helping him...
Forum: Carburetors
03-02-2022, 10:10 PM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

i bench set the car to the GM FSM. The IAB is set per a special gage (BT Partt 8253) which gages of the idle puinger. Then the idle screws are to be set at 3 turns out from seated. I understood...
Forum: Carburetors
03-02-2022, 10:00 PM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

Hello All,

Thanks for the follow-up. I tinkered with it tonight made some very positive progress.....

With a cold car, I went through the electric choke setting and made sure the blades were...
Forum: Carburetors
03-02-2022, 06:27 PM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

any thoughts??
Forum: Carburetors
03-02-2022, 06:24 PM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

any thoughts??
Forum: Carburetors
03-02-2022, 09:15 AM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

I guess to be fully disclosing of all that I did....

Two differences I made to the carb during the rebuild process:

1. The carb as we got it did not have the black cup under the MCR connector. ...
Forum: Carburetors
03-02-2022, 08:55 AM
Replies: 10
Views: 1,589
Posted By pcopp

Re: Carburetor Problem LG4 CCC E4ME

OK, Thanks for follow-up.....

Just went out to car at 9:15 am today 3/2/22

It is 37 degrees in New Jersey
Car is in unheated barn so temp is sub 50 degrees at least

Remove air cleaner....
Forum: Carburetors
03-01-2022, 09:57 PM
Replies: 10
Views: 1,589
Posted By pcopp

Carburetor Problem LG4 CCC E4ME

Struggling with my sons LG4 Rochester.

Car was bought out of estate after sitting for four years. I removed carb and purchased rebuild kit from a local NJ dealer. I purchased the "vintage" Burrows...
Forum: Tech / General Engine
02-24-2022, 05:29 AM
Replies: 3
Views: 459
Posted By pcopp

Re: Help with Checking Timing and Carb Tuning

OK,

Watched a few YouTube Videos....

1. The bottom of the wide VEE is zero degree BTC

2. The electronic spark timing connect (tan with black tracer) is in the left corner under the fan...
Forum: Tech / General Engine
02-23-2022, 10:40 PM
Replies: 3
Views: 459
Posted By pcopp

Help with Checking Timing and Carb Tuning

Helping son with his 1986 IROC. Car has LG4 with T-5 Stick. All stock. Car has the original E4ME Rochester and HEI Distributor.

I have done a complete tune-up and rebuilt the carburetor. ...
Forum: Tech / General Engine
02-19-2022, 06:14 AM
Replies: 188
Views: 9,714
Posted By pcopp

Re: Reinstalling quadrajet and as much Emissions as possible

If you have the original hood on the car with the emissions sticker, you will see the routing of all the vacuum lines for the EGR, AIR, EVAP and EVE and you will see the two TVS vacuum switches. You...
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