I own a 95 Chevy K2500 4x4 that was previously a diesel. After some engine trouble, I swapped the engine with a carbureted 350. The truck is a manual so the conversion was very straight forward. Anyway I am dissatisfied with my fuel economy, and I don't like the hassle of a carburetor. The engine is a very mild build, a little over 9:1 comp. with a Summit Racing K1102 cam. It runs great and I am happy with it's performance. Being a truck engine it doesn't see high RPM very often. I want lots of low RPM power, where is spends most of its time.
All of my gauges are hooked up and working. I just left most of the diesel harness unhooked and plugged in the oil pressure sender, CTS, re-used the old alternator (the tach signal goes through it on a diesel) to run the gauges. For fuel I placed a filter in the frame where the lift pump was, and used a return-style mechanical pump on the block.
Now what I am thinking for the TBI Setup.
1. I will put the electric diesel lift pump back in, and use a regulator that works with a return line. This will give me adjustable fuel pressure.
2. I was just planning on using a TBI distributor for ignition
3. I will use an adapter to mount the TBI on my 4bbl intake
4. I will be pulling everything from a donor at a scrapyard. I'm hoping they will make me a combo deal.
Now for the questions.
My truck is a bit of an odd duck. It is a late 95 OBD2. So I'm not sure if it would have came with a Vortec gasser or a TBI.
1. Can the TBI system work as a stand-alone? Meaning it basically works as a carburetor, without having to mess with the current harness or wiring. Basically I only want to have the TBI, it's few sensors, and the ECM to control it separate from my current system. I don't think I would be able to integrate them. Having multiple Oil pressure senders and CTS's wouldn't be a big deal.
2. Is the VSS signal required for the TBI system to work correctly? My speedo works just fine now, and I'd rather not mess with it. I can't see why the simple TBI would need a speed reference.
I look forward to any input.
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