The L92 motor has VVT (Variable Valve Timing) It changes the center line of the cam throghout the RPM range. Due to the solenoid that moves the cam the cam cover sticks out much further than the LS1 or LS2 type motors. Because of this you have to run the truck crank pulley to clear the cam cover.Karateboy88 wrote:
Why did you change all that from the stock engine?
What mods did you need to do to get the engine up to 500+ hp from stock? Mostly timing?
Now there are 3 basic types of front accessory drives from GM. The Covette puts the accessories closest to the block. The Camaro and GTO is spaced 3/4" further away from the block. The truck accessories are spaced 3/4" further than that so 1 1/2 inches further than the Corvette accessories.
So since I kept the VVT I had to space the GTO water pump 1 1/2" away from the block. I used the GTO water pump because it has a seperate thermostat. The previous car water pumps use a thermostat integrated into the water neck.
The Camaro brackets then had to be spaced 3/4" outward to get the belt onto the water pump pulley. And to make the tensioner line up I had to use the Corvette one.
I used the Escalade alternator because it is 160 amps. Since I have electric fans and planned a stereo this will provide me with plenty of power.
The Escalade A/C compressor runs on a seperate belt close to the block on the crank. So I just used it since it all lined up.
Now the motor in stock form makes 403hp. This is with a tune designed to get the best fuel mileage and run on whatever gas you put in it. With an aftermarket cam, upgraded valve springs, headers, intake, and a tune designed to get the most hp out of it on 93 octane it makes 530hp at the flywheel. With the cam centerline moving it effectively gives you torque and power all through the rpm range. It makes 400 ft/lbs of torque at 2000rpm. That makes this thing extremely fun to drive.
