This is TT TA's bro with a '94 TA that already has 1.6 RR, headers, bolt ons and the comp 503 cam specs: 224/230 503/510. Just bought a set of stage II ported heads, but haven't put them on yet. I have a the stock timing set with the stock timing chain that has 33K on it.

Do I need to upgrade the timing chain/set? I called Jegs and they said they run AFR heads and bigger cams on stokc timing sets all the time, but I'm not sure

Little help please

 

You don't absolutely have to upgrade the timing chain. But if you have the means, go ahead and and get a heavy duty one while you are at it. It just gives you a little added piece of mind.

 

Agreed.