Timing not advancing

[Bigred86foureye]

Just swapped in a 351w carb Into my 86 foxbody and for some reason the timing isn't advancing under acceleration . It is mildly built. Any help on why this might be happening or what causes this?

 

[General karthief]

Need to know more about the build/swap, ecu, efi, distributor, that kind of stuff

 

[Bigred86foureye]

351w 670cfm holley street warrior carb, gt40p heads msd ready to run distributor , older 6al box, bbk long tubes, edelbrock air gap rpm intake manifold, sve 3 core radiator and double fan, and cvf pulley system

 

[General karthief]

Ok, from what I remember about vacuum advance on carb'd cars there are two types, find out what type of advance your distributor uses. It is vacuum advance right?

 

[Bigred86foureye]

Ok, from what I remember about vacuum advance on carb'd cars there are two types, find out what type of advance your distributor uses. It is vacuum advance right?

https://www.summitracing.com/parts/msd-8354/

It the msd ready to run billet ignition. Has vacuum advance

 

[General karthief]

The instructions should show where to plug in the vacuum line to the carb.
MSD Ignition · Customer service

(915) 855-7123

 

[Bigred86foureye]

I was wrong. It's an electrical advance. The box controls it