I am installing a 5.3 with a carb. Can I use my stock guages and wiring. I have the harness that was originally with the 5.3. Do I just splice my wires to the 5.3 factory connectors and use the 5.3 sensors?
I have the Edelbrock intake with the MSD controller. I had the factory 200r4 transmission built with a stage 1 performance kit and a 2500 stall converter. Everything with that will just hood back up. My concern is the oil, temp, volt and tach.
I know the MSD box has a tach input so I have that covered.
I am also trying to figure out on my 2 pin alternator plug what pin goes to what. I started a thread about the Alt plug. What pin operates the guage and what is the other pin for?
Find a diagram for your year monte and see if the wires even drive the gauge. Most GM alts of the time do not have a direct connection to the gauge. The gauge hooks into the dash 12v side and measures voltage across the entire system, not just alt output
LSx alts are computer controlled, so the standard gauge above doesnt have to be connected to the new alt at all to run
Use a 98 temp sender to combine the CTS and coolant sender into one piece that fits the LSx heads
Most GM oil pressure gauges have a one wire sender. Simply clip the 87 connector off and attach the 5.3 connector with the 5.3 sender
volt gauge will work fine with no additional wiring. You will have to swap the MCSS oil pressure sending unit into the LS1, use a metric to american adapter and it will be a bolt on.
For the temp gauge you will have to cut the MCSS sender down and rethread it. You can rethread it 12x1.50 mm and screw it right into the head where the LS1 sender used to go.
__________________ 85 El Camino SS black and silver, factory buckets. 6.0L/4l60E 3.73 posi. Down for rebuild 2005 CTS-V Stock...for now daily driver 1985 Monte Carlo SS 5.3L/4l80e/turbo still in pieces. www.fquick.com/G-Body
Originally Posted by Rodder
"possible" is a relative term around here... anythingis possible. It's "possible" to put a whole K3500 4x4 dually truck rolling chassis under a brand new Mini body. Is it reasonable? No. Does it make sense? No. Is it possible? Yes.
My stock Alt plug has a brown wire and a red wire. The brown wire appears to go to the guage and the red wire is about 3" long and hooks to the battery post on the back of the Alt with the battery wire.
Pocket...Just to make sure I understand. I just need to use a temp sensor from a 98.