340 Engine issues

Hi guys, heres the info for the engine. Hope I covered it all.

• Not sure if the Convertor is weighted, it’s the stock convertor.
• Timing:
• Initial – 12
• Vacuum- 28
• Mechanical – 30
• Crank is steel and was balanced
• Cam is a CompCam’s x-treme energy. Lift .462 intake & .470 Exhaust with 262 duration intake and 270 exhaust.
• Pistons are Keith Black .20 pistons with Eagle “I” Beam connectors.
• Lifters are adjustable
• Block was zero decked
• Intake is a LD 340
• Carb is 600 Holly

Has for the cooling system I put in a new 3 core rad from Griffen with a 3600cfm elec fan