What are 821 LS heads?
The LS3 821 heads had hollow-stem valves, as did the LSA supercharged engine with the 863 heads. Heads for the LS9 used titanium intake valves like the LS7. The main difference between and LSA and LS9 head are the valves. The LSA heads also used a stronger rotocast A356-T6 alloy.
What vehicles came with L92 heads?
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….Results.
| 0.3 | 225 | 147.2 |
| 0.4 | 276 | 170.3 |
| 0.5 | 309.6 | 183.1 |
| 0.55 | 323.2 | 186 |
| 0.6 | 332.2 | 189.5 |
How much HP does a LQ4 have?
6.0L Vortec 6000 Engine Specs (LQ4, LQ9, L76, LY6)
| 6.0L Vortec V8 Engine Specs | LQ4 |
|---|---|
| Horsepower: | 300 hp @ 4400 RPM |
| Torque: | 360 lb.-ft. @ 4000 RPM |
| Bore and Stroke (in / mm): | 4 x 3.62 / 101.6 x 92 |
| Compression Ratio: | 9.4:1 |
What LS engine came with 823 heads?
823 heads are the l92 or ls3 heads.
Is a L92 a LS3?
The L92/L94/L9H uses the same block and rectangular port heads as the LS3, but on top it utilizes a rectangular port version of the “Big Ugly 2” truck intake.
What is the difference between LQ4 and L92?
Case in point, Pace Performance’s conversion package to swap the factory LQ4 top end with the better breathing, L92 cylinder heads and high-lift camshaft. Upgrading to the more advanced and better flowing L92 cylinder heads raises compression from 9.4:1 to 10.1:1.
What happens when you upgrade to L92 cylinder heads?
Upgrading to the more advanced and better flowing L92 cylinder heads raises compression from 9.4:1 to 10.1:1. As you’re well aware of, more compression means more power but not at the sacrifice of paying more at the pump. Paces’ top end package still allows for pump gas to fuel.
Is the 98-08 LQ4 a good first LS engine?
So, you’ve finally jumped feet first into the LS-game, gone out and purchased a second-hand ’98-08 LQ4 6.0L engine from your buddy but aren’t impressed with its total output. Well, fortunately, you aren’t alone. The 6.0L foundation is a great starting point for any LS-virgin builder.
What is the compression ratio of a GMP LQ4?
The head upgrade raises the LQ4’s compression ratio from 9.4:1 to 10:1 which makes this combination safe for pump gas. The GMPP Hot Cam really brings this motor to life with 470+ HP @ 6600 RPM and 417 TQ @ 5000 RPM.