Originally Posted by allansmith859
Last night I did a comp. test. All cylinders are at 90. The timing is on. Wires are right. I did notice the plugs which are new are now black. To much fuel un burned. Sounds like I better start looking to replace the heads or the injectors to 305 ones. What you think.
Sounds about right. The 350 heads are giving no compression and you're dumping too much fuel in there.
Don't forget the ECM.