Are 243 LS heads any good?
The 243 heads deliver increased performance and extra boost – a flow boost of up to 32.2 cfm and 28.5 cfm on the intake and exhaust ports and a horsepower boost of up 20 hp. Its superior casting and better airflow, along with incredible design, make it a desirable choice.
How much HP does 243 heads add?
Q: How much HP does 243 heads add? A pair of 243 heads add up to about 20 horsepower (hp) on the GM’s bolt-on LS1 or LS6 engine. Since the engine already features an aggressive camshaft, it might experience a little bit more horsepower.
Are LS 243 heads Cathedral Port?
243 heads have cathedral intake ports and D-shaped exhaust ports. 243 heads have a flow profile that makes them more adept at boosting torque on LS6 builds than LS1 since the exhaust has a better flow shape. The 243 heads are most popular with people looking for a budget cast head to have ported.
Which LS head is the best?
The LS6 was designed specifically by GM to surpass the LS1 as the best performance head, and it did such a good job that the “243” casting was recycled on the LS2. Aside from the LQ9, which is a copy of the LS6, these are the best performing of the OEM cathedral ports.
What engine comes with 243 heads?
The 243 heads came on the LS6 engine produced from 2001 to 2006. It was typically found in the C5 Corvette, but it was eventually ported to the LQ4 and LQ9 to meet truck specs. The latter offered 6cc larger combustion chambers to accommodate the working style vs. speed and acceleration.
What heads come on 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.
Did the 5.3 come with 243 heads?
The 4.8 and 5.3 come with 799(243) heads from the factory nowadays.
What car did 243 heads come on?
The 243 heads came on the LS6 engine produced from 2001 to 2006. It was typically found in the C5 Corvette, but it was eventually ported to the LQ4 and LQ9 to meet truck specs.
What LS is best for boost?
If you’re planning on boosting your project the 4.8L truck engine will be perfect for you. The 4.8L can take insane amounts of boost completely stock and will really perform well. If you don’t want a barebones 5.3L or 4.8L you could always step up to a 6.2L truck block which is based on the LS3 engine.
How much HP can a 5.7 LS1 make?
LS1 Engine Specs
| Configuration | 90° V8 |
|---|---|
| Displacement | 5.7 liters |
| Horsepower rating | 1997-2000: 345 hp at 5,600 rpm;2001-2007: 350 hp at 5,600 rpm |
| Torque | 1997-2000: 350 lb-ft at 4,400 rpm;2001-2007: 365 lb-ft at 4,400 rpm |
| Bore | 3.9 in |
How much HP can 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.
What heads come on a LS1?
How much horsepower can a LS1 handle?
How much boost can a stock LS handle?
on a stock ls1/ls2. These boost numbers can be plenty safe so long as the car has the proper tune. that PSI *can* be safe detonation wise (with a really good tune!)…but common evidence suggests that 500-550rwhp is about the limit of stock internals, mainly the pistons and con rods begin to start dying over 550rwhp.
How much HP can stock LS1 handle?
about 900 hp
The stock crankshaft can handle about 900 hp and 7,000 rpm (for a limited time).
How much power can a cammed LS1 make?
Peak power recorded at 496.2 hp and 436.6 lb-ft of torque, gains of 78.2 hp and 14.6 lb-ft of torque over our stock baseline.
How much horsepower can you get out of a 5.7 LS1?
As a starting point, the LS1 was an eye-opener for Chevy fans. Its all aluminum architecture made it significantly lighter than past GM V8s, and power was great: the engine was rated at 345-350 horses in the Corvette (depending on model year) and would check in at as much as 325 hp in the F-body cars.
How much horsepower does a 5.7 LS1 have?
305-350 hp
LS Family = Gen. 3, 5.7L, Aluminum Block, Car Engines
| Performance Specifications | |
|---|---|
| Compression Ratio | 10.2:1 |
| Horsepower Rating | 305-350 hp |
| Torque Rating | 335-365 ft./lbs |
How much HP can you get out of a LS1?
What is the biggest cam you can put in a stock LS1?
6.6 Litres of Doom
MR2 – the TRex is designed to be the biggest cam you can put in an otherwise-stock LS1 motor.
How much HP can a stock LS1 handle?
How much HP can a built LS1 handle?
how much HP a stock LS1 engine can handle? Most people will tell you 500-550 rwhp is a reasonably safe limit to push a stock bottom end. The weak link is usually the pistons.
How much HP can a stock LS1 crank handle?
The stock crankshaft can handle about 900 hp and 7,000 rpm (for a limited time). A Forged Crankshaft upgrade will add strength to the bottom end. Stroker cranks will also add extra displacement.
How much power does a cammed LS1 make?