FBO timing plate questions

[1969superbee451]

I just picked up an FBO timing plate for my 69 Coronet. I’m running a reman points distributor with a 15L advance plate and a Pertronix Ignitor. Not that it matters, but it’s going on a 451 stroker. My question is, the FBO instructions state the number of degrees on the plate indicates CRANK degrees. Yet wouldn’t the factory 15L plate translate to 30 degrees crank? I’m currently at 14 initial due to the cam, and I’d like to be around 34 total. My thought was to put the FBO plate at 10 (x2=20) to get a total of 34, but this contradicts the FBO sheet. Anybody have input here? The FBO plate only goes up to 18.

 

[Macdon221]

The number on the plate is how much mechanical advance you will get with the plate installed. That’s it.

So with your 14 initial….set the plate to 18….you will get 32 total. Check with the timing light though to ensure that’s what you end up with. Both of my cars the fbo plate has been bang on.