High BLMs

[Blue_Thunder]

Sorry in advance for the long post.

Alright I bought my first 3rd gen early this summer. The original engine was a 305 TPI Vin F and was swaped out with a 1974 CMJ 350. The EGR valve and smog pump were removed. The A/C was removed too. It also looks like there is no knock sensor either.(haven't found it yet) The 350 has been camed but I have not checked what size it is.after a new battery and alternator was put in I took it for a long test drive. I noticed when I came to a stop light or was slowly pulling into a parking spot it stalled out. I checked the ECM Chip and found that it was the stock one that was for the 305. I bought a jet performance chip for a 87 Iroc-Z with the 350 from a a friend for $50 because his 87 Iroc was wrecked.( This is a tempererary fix until I custom burn my own) The problem with the aftermarket chip is that I have to plug it into the stoc chip. So I have a performance chip for an 87 350 pluged into the stock chip for a 305 This seem to fix the stalling problem. I have noticed now a ticking/clicking noise when I start the car up and while driving. It doesn't do it all the time. Unfortunatly I don't remember if it did this before I put the chip in it. When I hooked up a master tech scantool at work scantool said I have a dtc a code 54 for the fuel pump/fuel pump circuit. This is the only code I have. I looked at the knock sensor and the scantool said, Knock Sensor- No signal. Does this mean That its not working or was never there? Plus will me not having an egr cause and engine ping? can and exhaust leak at the manifold sound like an engine ping because my manifolds have a leak. I can smell exaust coming though my vents.
Any Insight would be great because I am lost.

Here is my scantool data stream
Idle: 550-700
Desired Idle: 600
Idle Air Control: 25
Knock Retard: 0 Degrees
Knock Signal: No
Closed Loop
Block Learn Cell: 0 Cell
Fuel Intregrator: 156-164
Block Learn: 160
Spark Advance 14 Degrees
Oxygen Sensor: 285mv-750MV- The scantool may not be fast enough to get the full swing of the oxygen sensor.
Injector Pulse Width: 2.3-2.4 msec
Throttle Pos: 0.62 V
Maf: 5.2 g/s
Airflow: 5 g/s
Coolant: 223 Degrees
Mat/Iat: 149-153 Degrees

Dtc: Code 54-Fuel pump/Fuel pump circuit

[WMCCjames]

You have a lean idle which is fairly typical of a stockish cam on a stock chip. Nothing to worry about. Check you BLM's gong down the road to make sure they are somewhat in line......10 either direction of 128 is considered acceptable.

You need a knock signal....car will not run properly without it. Get that sorted first. Knock sensor should be on the coolant port right above the pan rail on the passenger side....unless someone moved to the drivers side. If you don't have one, get one or make the bypass for it by using a resistor.

Don't worry about the chip piggy backing the stock 305 chip...it is only using the hard code from the 305 chip (memcal config) and uses the aftermarket chip for the calibration tables.

[MattODoom]

Code 54 will often result from a bad fuel pump relay. Does your car sometimes take a long time to crank over and start? If so thats your fuel pump relay.

[Blue_Thunder]

Would a 74 350 block have a place for a knock sensor or will I have to custom make one? and if I have to custom make a knock sensor how do I do it?

Also the scan data was read after my car was running for about 10 minutes

[WMCCjames]

Nope, your block has the ports. They are the coolant drain ports.