Review on 🔧 JDMON Enhanced Hydraulic Roller Lifters Set of 16 with 4 Guide Trays - Perfect for Chevy LS1 LS2 LS3 LS6 LQ4 LQ9 LY5 LY6 LM7 4.8 5.3 5.7 6.0 GM Engines - Replaces OEM Part Numbers 12499225 HL124 by David Pullen

I see no problems with these jacks. Complete silence! I disassembled the car and installed these hydraulic lifters. The car started with the first turn of the key. No rumble. I read reviews before buying and noticed that one person bought a camera for $800 and complained about these jacks. Be careful when using the HIGH DOLLAR HIGH LIFT CAM. You must purchase HIGH DOLLAR lifters to match the cam. No wonder he wasn't pleased. The cam overloaded the hoists. These elevators are for the family car. NO RACE CAR.