Setting the distributor for sequential FAST

[turbo_bu]

I've read and understand how to set the crank trigger on my SBC for using the FAST ECM. I am still a little confused about how to set the distributor pickup .... I am using a sequential FAST system with the MSD distributor which has a mag pickup on the distributor shaft .... it is made for an EFI system.

Do you want the mag pickup to be lined up exactly with the #1 spark plug at TDC or maybe just a few degrees before TDC?

 

[berrelauto]

Lou
We set the sync at 70 deg. BTDC. It has a wide window so it dosen't have to be dead on. It just has to happen before the crank pulse.

 

[turbo_bu]

I'm assuming that is 70 crank shaft degrees BTDC, correct?

Craig or Lance, I remember somewhere that the distributor trigger wasn't really critical, (i.e. needs to be 20-30 BDTC). Is it true that it only needs to be somewhere before the crank pulse for the #1 cylinder?

 

[berrelauto]

Correct 70 deg BTDC crankshaft.