Can I use a LS7 CAM in a LS3?
Both the LS3 and the LS7 use similar offset (angled) intake rockers. In other words, the tip of the LS7 rockers looks like it will not align correctly with the valve centerline. There may be an aftermarket solution that works.
What is the biggest cam for stock LS3?
The 8710 cam picks up 26 degrees of intake and 31 degrees of exhaust duration at 0.050, and 0.074/0.080-inch lift. It clears the stock pistons, making it the largest drop-in cam Summit offers for a daily driver.
How much HP does a cam add to a LS3?
The 224 cam demonstrated just how much the LS3 motor was in need of wilder cam timing. Stepping up 20 degrees of duration (@. 050) resulted in a gain of just over 50 hp, upping the peak power output from 496 hp and 491 lb-ft to 547 hp and 514 lb-ft of torque.
How much horsepower does a Stage 3 cam add on a LS3?
20 hp
With the larger cam and the extra cubic inches, the LS3 picked up an additional 20 hp at the same horsepower peak as the smaller cam, plus a rowdy idle. It dropped under 10 inches of vacuum at idle as narrow LSA long-duration cams tend to do. It also dropped some torque in the mid range.
How can I get more horsepower out of my LS3?
Both the LS3 and L99 engine blocks can be pushed to 850 to 1,000 horsepower….On a stock LS3 engine, the following upgrades can improve performance and fuel economy:
- A cold air intake kit.
- Headers.
- An aftermarket exhaust system.
- A computer programmer.
How much does it cost to cam a LS3?
Around here the shops charge around $2500 for parts and labor for an LS3 cam install.
How do I get more power out of my LS3?
How much power can a LS3 take?
They can handle about 800 hp and 6,500 rpm in boosted applications. If you’re getting forged pistons, upgrade to forged connecting rods at the same time. Even though it’s cast, the crankshaft can handle about 900 hp and 7,000 rpm (for a limited time). A broken crankshaft is bad news.
What does installing a cam do?
Cams increase airflow in three ways: More lift also means that a valve must ramp open further faster, putting added stress on your valvetrain. Practically speaking, more lift is power at the cost of extra valvetrain wear. Another way to flow more air through your motor is to keep the valves open longer.
What is the weakest point of the LS7 heads?
The “weakest” point of the LS7 heads is the exhaust valve. If you can unshroud it more and smooth the exit flow both before and after the exhaust valve then, which ever cam application you choose will do much better. Jub, keep us posted if you end up with this cam, I have been leaning towards the 550 myslef.
What is the LSA of an LS7 engine?
If you use David Vizard’s chart to determine LSA based on a ratio of discplacement to intake valve area, he states that the ideal LSA of an LS7 would be 108.
What is the DCR of the LS7’s torque?
Katech’s torquer cam raised the LS7s DCR from 8.5 to 9.1! And this is still on pump gas! Wow. That goes a long way towards illustrating how good the quench and heat dissapating properties of the LS7 are engineered.
How good is the LS7 on pump gas?
And this is still on pump gas! Wow. That goes a long way towards illustrating how good the quench and heat dissapating properties of the LS7 are engineered. A lot of the engine masters challenge engines seem to run with a DCR of right about 8.5. Very few people claim to run around on pump gas on the street with a DCR >9.0:1.