Join Date: Jun 2009
Location: Southeastern Pennsylvania
But boy!, is the engine soft. The guy jetted it up because it was running warm with the a/c on. I'm thinking timing. Never drove a 289 this weak. But I'm certain that it's sound and that with some tuning it will wake up. I didn't realize how strong the engine was in the car I just sold.
Compatibility of carb, cam, and exhaust is critical. And I'll bet the distributor curves have never been looked at. That alone might make the difference. Really.
I have two sets of '65 289 A-code heads. Is there enough difference to consider having them reworked and installing them? What's the max RPM when using push-in studs?
A code and C code use the same heads. Press-in studs should only be used with stock or very mild cams. The cam determines the max. With the C3AZ-V, about 5300 is it.
Also, it has dual pipes, but no crossover. What improvement will adding the crossover make? Noticeable? Will that require a jetting change?
Ford installed the crosstube because it was a virtually free 15 extra horsepower, improve fuel economy, and made the engine sound smoother. What's not to like? And no, it will not change your carb requirements. Of course, as you say, the PO may have screwed up the carb. What carb is it?
Amateur restorer. Well, sometimes I have been paid for it. But not right now.