How much does it cost to port LS1 heads?
Cost of Ports and Polish (Quotes)
| Vehicle Make & Model | Port & Polish Cost |
|---|---|
| Ford Mustang | $400 |
| Acura Integra | $350 |
| Toyota Camry | $280 |
| LS1-based Chevy | $500 |
What LS engine has 706 heads?
The LS 706 Heads wound up on different models of the Chevy family and fit with the high-performing LM7, LR4, and LM4 5.3 engines. The engine specialists have remanufactured these high-geared cylinder heads at a much more affordable cost and make them the best-performing, cathedral-port factory heads out in the market.
Does porting and polishing make a difference?
Port and polish work helps the engine to make more power in three different ways. By making the intake ports bigger, port and polish work removes restriction from the intake stream which makes it easier for the engine to draw in fresh air.
What heads came on a LS1?
Debuting on the LS1, the cathedral port heads were named for the distinctive shape of the intake port. Any intake manifold (LS1, LS6, LS2) will work with these heads as well as Vortec intakes from cathedral port headed variants.
Are 862 or 706 heads better?
The 706Vortec heads are even slightly superior to the commonly found 862 heads. The reason is that the 706 heads are SPM (semi-permanent mold) made, while the 862 heads are sand cast. The SPM method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away.
How much horsepower can a LS1 handle?
Even in emissions-legal trim, a blown LS1 will pump out over 500 wheel horsepower, with 800 wheel hp available for a serious stroker effort. With turbo motors, the sky is the limit, as 1,000 hp is a common occurrence, with the ability to adjust the power output by turning a simple boost knob.
Whats better 243 or 706 heads?
706 heads tend to be more popular than 243 heads with those who run naturally aspirated engines. While they don’t have the same size combustion chamber they also don’t have the tendency to lower the compression ratio and reduce horsepower.
How much piston to valve clearance does an LS1 have?
These heads boast plenty of piston-to-valve clearance for an 11:1, stock cubic-inch LS1 with a large-duration cam (without cutting piston reliefs), though cutting the chambers can easily put compression over 12:1.
Which CNC machine is best for cylinder head casting?
The optimum for your OEM (original equipment manufacturer) cylinder head casting is to CNC machine the intake, exhaust ports and combustion chamber. Transform your cylinder head castings with the latest Nxtgen 5-axis CNC porting technology and CNC valve seat machining.
Are Chevrolet LS-series heads made for the massmarket?
Although Chevrolet has invested plenty of time and effort into engineering a fine array of cylinder heads for the LS-Series engines, it still must focus on the needs of the massmarket consumer. Aftermarket companies have no such restrictions, and can craft performance-specific castings to meet the needs of racers and hardcore enthusiasts.
Do all Stage 1 heads have factory valves?
All Stage 1 heads have factory valves and are milled and assembled according to owner specifications. Only new “317” cores are used for the larger chambered 6.0-liter casting, and “243” or “799” cores are used for the LS6.