I have a 1968 mustang with a 1969 302 in it. I am having trouble tuning it to run properly. I bought the car with lots of modifications already done to the engine and have taken the top half of the engine completely apart and back together to try to fix the problems but they are still there. I have tried tuning the carb with different jets and rods, and adjusting the timing but the car still struggles to go especially at low RPMs and some dead spots in the throttle. I doesn't really seem to have the power it should have. I tuned the carb with a vacuum gauge and got to a max of 11-12 at 1000 RPM which i think is the correct idle for the cam i have but i do not know for certain what cam i have in there. I am wondering if i should open the engine up again and check the cam and bring it back to stock as this will be a fun street car when done. Distributor curve maxed at ~3000 RPM initial timing at ~15 degrees i have thrown some money at it to fix it but i don't wont to spend any more until i know what the issue is.
Any wise engine sages that can help me out?
Engine mods are:
MSD pro billet distributor with 6AL box
Edelbrock Performer cylinder heads,
Edelbrock Performer RPM Air Gap intake manifold,
1406 Edelbrock 600 CFM carburetor,
Possibly Edelbrock Performer RPM Camshaft
engine pistons, rods and crank and all stock as far as i can tell.
all attached to a T56 magnum transmission with a ford 9 housing 3.25 gears
PS: while taking the heads apart i noticed quite a bit of gunk on the top and bottom of the valves