You can find that chain at Scoggin Dickey, www.sdpc2000.com

It is for a '87 and up hydraulic roller cam.

The billet steel heat treated gears are made in Austrailia, the chain in Germany.

The timing cover needs to be clearanced a little bit and you have to run an electric water pump.

 

This is off-topic but I read that doing a burnout on street tires does nothing for hooking. Burnouts are for slicks which actually get sticky when they get hot. I would also recommend to avoid the water they spray -- also for slicks not for street tires.

 

I'd check into what caused the chain to break... before thinking it was the chain that failed.... Also factory Timing chains are pre-stretched ,meaning they will have slack in them....

 

Some of the slack ya may have is due to the smaller crank sprocket GM spect out for the LT-1.They do this to try to take some load off of the front cam brg with the gear drive pump.
Ya can get a Cloyes ED single roller with the GM spect crank sprocket or a standard size(oversized as compared to the GM one).According to Cloyes this chain is as strong or stronger than a double roller based on pin size