Timing not advancing

Oct 29, 2018
27
1
13
40
Stafford, Va
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?
 
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Oct 29, 2018
27
1
13
40
Stafford, Va
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
 
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General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
19,638
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polk county florida
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?