Checkered Flag Performance 3.780 Tapered Piston Ring Compressor

Very well made, had to return, needed the 4 inch size.

These are inexpensive enough for the shade tree mechanic to own even if you only do 1 motor. I have used the universal ratcheting band type and have cut both hands. This tool makes installing pistons a breeze.

Worked perfectly. Easier than the old school band clamp style. No hung rings. A little atf to lube the inner surface and tapped right in.

Junk

Worked perfectly on LS 5.3 Vortec rebuild.

Works excellent for a stock rebuild on a 5.3 ls. Pistons slide right into the block no problem.

Used this on my LM7 rebuild. I use stock sized pistons and rings and this tool made installing the ringed pistons into the cylinders a breeze. HIGHLY recommend. Personally prefer this over the adjustable compressors as you know you wont be making it too tight or too loose. Obviously the only trade off is having to buy an individual compressor for each engine build assuming you have different cylinder sizes on your other builds.

Works perfect

Yes it is bore specific. But you will never install pistons faster than you ever have without it. Fast, easy,great tool for installing stock bore Ls 5.3 pistons.

Good investment. Saves so much time.