Hi all! I have a 94 K1500 with a 5.7L, NV4500, 14-bolt-3.42 gear ratio, E-cab, stepside. It now has new top end gaskets and fuel pump and it runs much better than when I purchased it. I could not pass it up. I had been looking for one of these trucks for a while and when I found this one with it's unique-ish options and only 57k miles, I could not help myself. I am thinking about changing out the camshaft. When I had everything else apart I swapped the exhaust crossover to a JBA 2831SY. It is 2.25 into 3 and very smooth and nice looking. I bolted it to the original manifolds. FYI to anyone doing that, you will need a burr to modify the clamps slightly or it won't fit. That has a 3" cat, some pipe then a 3" glass-pack and finally goes up over and out the backside with 2.75" tube. I would have finished it with three inch, but the previous owner had put in what looked to be a factory stainless muffler out of a later model and it was nice smooth and pristine looking. So any thoughts on a proper cam for this engine? I checked when I had it apart, it's not tapped for a roller cam. I have no plans to replace the heads or exhaust manifolds. What is there is made for torque and I'm ok with that. I have a feeling though that there may be better cams if I'm not quite as emissions constrained as GM was. I also am not opposed to re-tuning. In fact I am a member of another group/project that has standalone EFI control and I'm thinking about gutting a spare ECU I have and making a PNP unit for the -92 auto and -95 manual trucks, but that's a whole other topic.
Thanks in advance for the recommendations! Let me know if I left out an important detail.
Thanks in advance for the recommendations! Let me know if I left out an important detail.
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