What heads came on a L76?
The L76—like its LS2 sibling—is a 6.0L, Gen. 4, aluminum small block engine that was used both in GM cars and trucks. The L76 is an adapted version of the LS2, featuring new rectangle port cylinder heads and Active Fuel Management (AFM)….L76 (Car) Engine Blocks.
| L76 (Car) Block Specs | |
|---|---|
| Cam-to-Crank Centerline | 4.914 in. |
Are LS3 and L92 heads the same?
As we have come to expect of the LS3/L92 heads, the exhaust flow lagged behind the intake significantly at 226 cfm….We Step Up The Power With A 468ci Engine To Log The Performance Of Nine LS3 Rectangle-Port Heads.
| FLOW DATA: CFM AT 28 INCHES | ||
|---|---|---|
| LIFT | INTAKE | EXHAUST |
| 0.400 | 259 | 188 |
| 0.500 | 297 | 207 |
| 0.600 | 312 | 216 |
What did L92 heads come on?
Those heads are the L92 castings that come as standard equipment on the L92 engine, found in such production vehicles as the 2007 Cadillac Escalade in 403-horse form.
What CC are L92 heads?
Because the L92 heads use the stock Gen III 15-degree valve angle, we didn’t have to worry about custom valve reliefs in the pistons. The combustion-chamber size is right at 70 cc, which, according to GM’s information, is within 1 cc of the stock LQ4 aluminum heads, so the static compression ratio remains the same.
How much HP can a L76 handle?
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.
Is L76 a Gen 4?
The L76 is a Gen IV, 6.0L, aluminum block, car engine which came under the hoods of GM performance sedans between 2006 and 2010. In some ways, it bridged the gap between the LS2 and the LS3.
What is the difference between LS3 and L99?
The L99 is a 400-horsepower engine while its fraternal twin–LS3–is rated at 422 hp. The difference lies in the valvetrain; as the short-block, heads, and intake manifold are identical. One small note is that the L99 does have slightly less compression than the LS3 powerplants.
Is the L92 a good engine?
Upgrading the L92 Camshaft and Valvetrain VVT is great in a street vehicle if you install a VVT cam and phaser-limiter along with a tune. Properly done, it makes more power and torque than a much bigger engine-yet idles well and retains most of the gas mileage.
How much HP can a stock L92 handle?
They can handle about 850 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 1000 hp.
What vehicles did the L92 come in?
The L92 was first produced in 2007, installed in the Cadillac Escalade. It was later installed in Chevrolet and GMC trucks and SUVs. It came from the factory with a 403 horsepower rating, variable valve timing, and used the same heads, block, and crankshaft as the LS3.
How much horsepower can a L92 handle?
about 850 hp.
They can handle about 850 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 1000 hp.
Is the L76 reliable?
– L76 AFM does not, in itself, cause major long term engine reliability issues. – Tuning out AFM will not prolong engine life. – There are some reports of valve train issues with L76 but not to the level of being a widespread issue.
Why did GM make the L92 cylinder heads?
GM Racing designed this intake specifically for the L92 heads to make it easier for hot rodders to adapt a carburetor onto a more modern small-block V-8. The Livernois technicians saw it as a way to adapt their fuel injection system to an intake with more horsepower potential.
When did mini LS7 cylinder heads come out?
(Photos Courtesy General Motors) These mini-LS7 heads debuted in Australia first in the 2006 Holden Commodore (among others) as the L76 and L98, but are most commonly known for their debut on the 2007 Escalade’s L92. Only one significant change was made for use on the LS3 engine in the Corvette, Camaro, and G8 GXP–hollow-stem valves.
What’s the difference between LS3 and LS9 cylinder heads?
Just like the LS3, the large valves require a 4-inch bore, and the LS9 also has a thicker deck and larger head bolts for better clamping with boost. If you are not using an LS9 block, you need ARP head studs to rectify. The intake manifold locating bosses also need to be machined for use with an LS3 or L92 manifold.
What kind of cylinder head does a corvette use?
Lingenfelter offers a CNC ported version of the L92/LS3 aluminum cylinder head used on 2008 production 6.2L based Chevrolet Corvettes and various 2007-2008 L92 L76 6.2L and 6.0L based GM trucks. The cylinder head ports and chambers are carefully redesigned to produce the best flow characteristics that will provide improved horsepower & torque.