Hey guys, been meaning to join for a while, but never got around to it. My girlfriend and I have a few classic cars, one of her's happens to be a 77 Chevette with a 1.6 and a 4spd.
Here she is;
When we got it, the engine was seized as it was sitting in a field for many years. Some trans fluid in the cylinders got it running again. The last guy that had it seemed to have some mechanical blunders. He "rebuilt" the motor, and said it's 60 over. But I'll get to that later...
Anyway, here are some videos of it!
Now, the problems. The car WILL NOT rev past 4,000 RPM. It just stops revving. I put a NOS single barrel carb on the car when we got it, since the last owner had a 2bl Holley from an AMC on it. Also reinstalled the stock 1bl intake. It has the car removed, and a single 2'' exhaust all the way back with a super turbo muffler. I installed an MSD 6AL with a coil thinking it was the HEI module breaking up, and although it made the car run better, it still won't rev.
I'm assuming the cam timing is off. When the guy put the motor in the car, he did not install any of the timing covers, or the timing tab. I have it timed "by ear" where it seems to run the best. Most likely I'll be pulling the motor out of the car this winter, if I have time, to refresh it. Just wanted to see if anyone had any other ideas first.
Post by DOCTOR FIELDS on Oct 3, 2012 8:51:48 GMT -5
Welcome to the forum! That's a clean looking '77 you got!
Did it not rev past 4,000 with the AMC carb. on it? Does it miss or just even out at 4,000? The timing tab at the crank is built into the crankcase cover. Did he cut it off? I've got a cam cover (metal cover behind the pulley) if you need one. The cam pulley has a hole that aligns with the metal cover.
Checking / setting the cam and ignition timing should help or at least get you in the right direction.
Nah I put a stock single barrel back on. It doesn't miss or anything, just stops revving.
All the timing covers are missing. There is no timing tab at all on that cover, I don't know what happened to it. It seems to be a later motor in the car. The last owner found us on Youtube and said the motor is "bored .060 over", but who knows. I take whatever people say with a grain of salt, especially seeing the other work he did.
Update. We got the motor pulled yesterday. I held my new timing covers up to the motor and checked timing, and it's about 2-3 teeth advanced on the cam. Cylinder three was also down to 90psi of compression. Should have the motor done this week. Adding a Weber 32/36 and I'm going to try to fab my own longtube header.