I have a 91 ZC SOHC that i have had for about 3 monthes. about 2 weeks ago my car started to sputter and have hesataion problems between 2500rpm-3000rpm. not sure what it could be i have changed my cap, rotter and plugs and wires but nothing if you know or can help me let me know. ( might be something to do with Timming, air/fuel, ??)

 

I'm having a similar issue and I've narrowed it down to timing. I'm missing my timing cover, so once I install that I'm goign to completely retime the car and see what happens.