Are LQ4 and LQ9 heads the same?
The only differences were: The LQ4 came with dished pistons. The LQ9 came with flat top pistons. (This raised the compression ratio, horsepower, and torque.)
What heads does a 6.0 LQ9 have?
The LQ9 is a 6.0L Gen….LQ9 Cylinder Heads.
| LQ9 Cylinder Head Specs | |
|---|---|
| Intake Valve Diameter | 2.000 in. |
| Exhaust Valve Diameter | 1.550 in. |
| Cylinder Head Bolt Style | Torque to Yield (TTY) |
| Cylinder Head Bolt Size 2002-03 | (8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45 |
How much HP does a LQ9 make?
345 horsepower
The LQ9 was introduced in 2002 for the Cadillac Escalade and was found in top-of-the-line trucks until 2007. It cranked out 345 horsepower, had 10.1:1 compression, and had other nice features like full-floating pistons.
How much HP can a LQ9 handle?
1,000 hp
The LQ4 and LQ9 have very strong blocks. They can handle over 1,000 hp.
What is the difference between the 6.0 LQ4 and LQ9?
The ONLY difference between an LQ4 and LQ9 is the piston! The LQ4 piston is dished where as the LQ9 is a flat-top increasing compression to 10:1, and HP to 345 factory. The LQ9 is a limited production engine and VERY desirable as it is the HO 6.0L and comes with a premium price.
How can you tell the difference between LQ9 and LQ4?
The 6.0L LQ4 and LQ9 are iron blocks, only difference between them is compression ration. Only real difference is pistons LQ4 had dished and LQ9 had flat tops (yes rods were different on early LQ4 and 99-00 had iron heads) Only way to tell is look at pistons or vin of donor save for 99-00 with iron heads as its an LQ4.
What is the difference between LQ9 and LQ4?
What LS engine has 317 heads?
LQ4 engines received the Generation III 317 V8 head in 2001. It has cathedral shaped intake ports and D shaped exhaust. Its large combustion chamber results in lower compression ratios.
Is an LQ4 better than an LQ9?
How big can you bore a LQ9?
A LQ9 can safely be punched . 060″ over.
Which is better LQ4 or LQ9?
How much can you bore a LQ9?
Is LQ9 better than LQ4?
Is LQ4 aluminum block?
LS2 LQ4 6.0L SHORT BLOCK WITH ALUMINUM HEADS 408 900HP FORGED INTERNALS 24X FLAT.
How much horsepower does a LQ4 6.0 have?
300-325 hp
There are two 6.0L iron-block engines out there, the LQ9 (345 hp) and the LQ4 (300-325 hp).
Are 706 heads better than 317 heads?
The 317 heads flowed more than the 706 heads by as much as 20 cfm at some lift points. The peak flow numbers differed by just 7 cfm at 0.700 lift. What made the 317 heads both kissed and cursed was the combustion chamber size. The massive chamber volume of 71.5 cc’s put them a full 10 cc’s over the 706 heads.
What’s better LQ4 or LQ9?
How much can you bore a LQ4?
The 6.0L block—used in the LQ4, LQ9, and LY6—is the most popular with hot rodders. It features a 4.000-inch bore and can be purchased brand new for $800. It can safely accommodate a 4.030-inch bore and is good for 421 ci when matched with a 4.125-inch stroke.
How much HP does a LQ9 6.0 have?
345 hp
LS Family: Gen. 3, 6.0L, Iron Block, Truck Engines
| Performance Specifications | |
|---|---|
| Compression Ratio | 10.1:1 |
| Horsepower Rating | 345 hp |
| Torque Rating | 380 ft./lbs. |