Well, I was bored last week and had wednesday off, so I decided to go to the local test and tune night. Now, I knew the car wouldn't be very quick, it has an open diff, a convertor that brake stalls at around 1600 RPM and the Quadrajet needs some help, but this was for fun, and the $20 wasn't gonna kill me so, why not? My first run of the day was the best run. I ran a 9.4 at 68 MPH with a 2.6 second 60 foot. Ouch. I had to idle it out of the hole as the brakes could not hold the engine at all due to the convertor, and it spun the one wheel badly even while taking great care. Now, the rest of the runs were all in the 10 flat range, so I was like WTF? I noticed the factory tach was erratic and not going above 4500 RPM which I had thought was due to faulty tach wiring. Turns out that was wrong as I was about to find out on the way home. I live about 25 miles from the track, so any tow would be expensive. As I was leaving the track, the engine started cutting on and off intemittently. I pulled in to the nearest gas station and checked the wiring to the HEI, battery, and alternator, but all was well and as tight as it has been for the 7 years I've had the Chevy 355 in it, so I decided to limp it home as far as possible and just tow it after that. Fortunately, I made it home safely and without an expensive tow. I did finally figure out what the problem was though: a faulty internal wiring harness for the 30+ year old HEI distributor! The lesson is to never trust old wiring as it will fail you at the most inopportune moment! I will be going back in a few weeks with another Quadrajet (I have one with a straight inlet from a 79 Buick right now and the baseplate is worn out, I want a 90 degree Chevy style instead) , a MSD digital HEI module ( comes with wiring!) and hopefully a posi with hopes of hitting the high 8's.