All of them
The 2007 Cadillac Escalade has 16 valves.
The 2007 Cadillac CTS has 24 valves.
The 2007 Cadillac SRX has 24 valves.
The 2007 Cadillac CTS-V has 16 valves.
The 2007 Cadillac Escalade-ESV has 16 valves.
The 2007 Cadillac Escalade-EXT has 16 valves.
The 2007 Cadillac Escalade's engine produces 403 hp @ 5700 rpm.
The 2007 Cadillac CTS's engine produces 210 hp @ 6500 rpm.
The 2007 Cadillac SRX's engine produces 255 hp @ 6500 rpm.
The gas tank on the 2007 Cadillac CTS holds 17.0 gal..
The gas tank on the 2007 Cadillac SRX holds 20 gal.
The gas tank on the 2007 Cadillac Escalade holds 26.0 gal..