The vehicle- street-cruiser Galaxie 500, with a stock 390/auto.
I've been gearing up for a distributor recurve, and finally got into it this weekend. Before I took it apart, I took a baseline reading (using a tach and an assistant on the gas pedal). Its not the most accurate method, but its the best I've got.
Then, I took it apart. Its got stock-looking springs- one heavy, one light. The slots are "10L" and "15L". the arm is currently using the 10L slot, and there is a little rubber bushing around the arm, which i guess is limiting it to 8-9 degrees, instead of the full 10.
Since I was running 10 initial and its using the 10L slot, it appears that I'm all in at 3000 rpm, which was surprising, since its got a heavy spring.
So- I'm looking for advice on which way to go at this point.
I suppose I could leave everything alone, and just try to run 18 degrees initial...or I could switch to the 15L arm and then back off to 8 initial.
Thoughts? Should I even bother with changing the springs? I've got the Mr Gasket 925D on hand.
I figured I'd start with the easiest option first- I've bumped the initial to 15. So far, so good. The car is happier, for sure. I'll drive it a bit, and may try to get it up to 16-18 over the weekend.