THE ZL1 SPEED SHOP HAS USED THESE TRI-METAL THERMAL COATED MAIN BEARINGS IN OVER 100 LS ENGINE COMBINATIONS--MANY FORCED INDUCTION OR NITROUS ENGINES FROM 700-1500HP. FOR OVER 20 YEARS WE HAVE USED KING BEARINGS AND PREFER THEM OVER CLEVITE, ACL, AND OTHERS.
YOU CAN USE THESE MAIN BEARING WITH BOTH OEM STOCK LS CHEVROLET CRANKSHAFT OR ANY AFTERMARKET CRANK.
THIS IS A STANDARD SIZE MAIN BEARING SET--IF YOU NEED UNDERSIZED BEARINGS FOR A CRANK THAT HAS BEEN GROUND OR TURNED CONTACT US--WE CAN SUPPLY THESE TOO.