Chevy LS7 Engine Specs · Help Center - Summit Racing
The LS7 is the largest engine in the LS family. It is unique because it was based on the C5-R Le Mans Corvette racing engine. It was purpose-built for high-performance. The LS7 was available in performance cars between 2006-15. Top End Features. Unique high-flow, CNC-ported, square port, cylinder heads and intake manifold; Titanium intake valves
Upgrading the LS7 Engine · Help Center - Summit Racing
Changing the top end parts is the next level of upgrading the engine. This includes the heads, cam, valvetrain, intake, and throttle body. These upgrades are great for a naturally aspirated engine running pump gas. The LS7 intake manifold and throttle body work great on …
I don't know the VIN. Which LS engine do I have? · Help Center
The intake manifold will tell you whether the engine came from a truck or a car. The car manifold has a rounded top and you can see the contour of the intake runners. The truck manifold is about 3 in. taller and has more of a box shape. If you see a supercharger you can skip the chart. You have either an LSA or LS9; Identification Chart
I know my VIN. Which LS engine do I have? · Help Center
The information below applies to vehicles with the original engine still installed. If you have a second-hand vehicle that doesn't match the info below, the engine may have been swapped out. Follow this link for help Identifying an LS Engine by Inspection. Click on the RPO code in the table to see more details about that engine.
What's the bore and stroke for an LS engine? · Help Center
What's the bore and stroke for an LS engine? Views: For all Gen. 3 and 4 Chevy small block engines with the same Displacement , the Bore Diameter and Stroke Length are the same.
How do I install my LS cylinder heads? · Help Center - Summit …
The block is secured to the engine stand. It may rotate with the added weight of the cylinder head. Installation Process. Press new Dowel Pins into the engine block. There are 2 dowels per side (in holes #7 and #8). They align the head to the block. Always replace them before installing your cylinder heads. If needed, lightly tap them in with a ...
LS Engine Tech - Variable Valve Timing (VVT) · Help Center
The computer senses engine load. It also monitors valve timing through the camshaft position sensor. It uses these inputs to determine the best valve timing for the current conditions. The computer sends a signal to a solenoid on the timing cover. The solenoid controls oil flow through a special control valve in the camshaft bolt.
What is rocker arm ratio? · Help Center - Summit Racing
Rotate the engine by hand and watch the valve. (Any valve on any cylinder will do.) When the valve is fully closed, set up your Dial Indicator so it rests on the tip of the valve stem. Set the dial to zero. Rotate the engine by hand. Watch the dial. Note the max lift measurement. (The highest point before it starts to close.)
How do I delete the VVT on my LS engine? · Help Center - Summit …
This article applies to any Gen. 4, Chevy LS engine with the Variable Valve Timing (VVT) System. A VVT Delete Kit removes the VVT components and replaces them with standard parts. At a minimum, they include: A Gen. 4, non-VVT timing cover, A new, 4X, non-VVT upper timing gear, A new harmonic balancer bolt, and; New camshaft bolts.
LS Engine Tech – Active Fuel Management (AFM) · Help Center
When engine load increases: The computer sends a signal to the LOMA. The LOMA solenoids close. Oil bleeds off the lifters. The lifters return to normal operation. **All 8 cylinders are now powering the engine.** How does it affect performance? AFM is good for gas mileage. AFM engines are 5-7% more fuel efficient.