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6.0L engine 317 or 241 heads

This is a discussion on 6.0L engine 317 or 241 heads within the Internal Engine forums, part of the LSx Technical Help Section category; hello, here is what i have: 99 s-10 5.3, ls1 hot cam, home ported 241 heads with z06 springs, edelbrock ...

  1. #1
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    6.0L engine 317 or 241 heads

    hello, here is what i have:

    99 s-10 5.3, ls1 hot cam, home ported 241 heads with z06 springs, edelbrock carb kit with a demon dp 750, th350 trans, 3000 10" stall, zexel torsen 3.42 rear end

    i have had this running for a year now with no problems runs and drives great and runs high 11's in the 1/4

    i just picked up a 2003 6.0 long block with 317 heads, what do you think will make more power, the stock 317 heads or swapping my 241 heads to the 6.0

    i will be swapping all other components from my 5.3 to the 6.0 engine

  2. #2
    Senior Member mrr23's Avatar
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    depending on how well you ported them, the 241 heads. going to the 241, you'll be raising hte compression. 241 =66cc 317 = 71cc

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    Junior Member shabysurf's Avatar
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    [edit] V8

    [edit] 4800
    The Vortec 4800 LR4 is a V8 truck engine. Displacement is 4.8 L (4807 cc) with a 96.01 mm bore and 83 mm stroke. It is a de-bored and de-stroked cast iron version of the LS1 small-block from the Corvette with aluminum cylinder heads. It replaced the 5.0 L 5000 L30 for the 2003 full-size vans. The LR4 produces 270-350 hp (201-205 kW) and 285-290 ftlbf (386-393 Nm) of torque. LR4s are manufactured at St. Catharines, Ontario and Romulus, Michigan.

    The LR4 features electronic throttle control and does not need exhaust gas recirculation due to a new, more-powerful computer. The LR4 shares the same block and cylinder heads as the Vortec 5300.Supercharged aluminum versions said to produce 350 hp were considered for the silverado SS but were shelved. Cost and emissions issues were main considerations.

    LR4 applications:

    Chevrolet Express 2500-3500/GMC Savana 2500-3500
    Chevrolet Silverado/GMC Sierra
    Chevrolet Tahoe/GMC Yukon

    [edit] 5000
    The Vortec 5000 L30 is a V8 truck engine. Displacement is 5.0 L. It is a based on the Generation I small-block from Chevrolet. It was replaced by the 4.8 L 4800 LR4 for the 2003 full-size vans. In Van configuration it produces 230 Net Flywheel Horsepower at 4,600 rpm and 290 Net Flywheel Torque at 2,800 rpm. The engine uses a hydraulic roller cam and high flowing, fast burn style vortec heads. They are identical to the 350s, except for having a 58 cc chamber and 1.84" intake valve.

    L30 applications:

    Chevrolet Express/GMC Savana
    General Motors C/K full-size trucks

    [edit] 5300
    The Vortec 5300, or LM7/LM4/L59, is a V8 truck engine. It is a stroked (by 9 mm) version of the Vortec 4800 and replaced the 5700 L31 in 2003. L59 denotes a flexible fuel version, while the LM7 is a special low-emissions engine. The L33 is made for the pickup trucks.

    All Vortec 5300s are based on the new Generation III small-block V8. Unlike the all-aluminum LM4 and L59, the LM7 uses a cast iron block. The block and heads are the same as on the 4800 LR4. Power output is 285-295 hp (213-220 kW) and torque is 325-335 ftlbf (441-447 Nm). Displacement is 5.3 L (5328 cc) from 96.01 mm bore and 92.00 mm stroke. Vortec 5300s are built in St. Catharines, Ontario, Romulus, Michigan, and Silao, Mexico. The L33 is an all aluminum block, with higher compression. This application has 310 hp and 335 ftlbf of torque.

    LM7 (iron block, low-emmissions) applications:

    Cadillac Escalade
    Chevrolet Avalanche
    Chevrolet Express/GMC Savana
    Chevrolet Silverado 1500-2500/GMC Sierra 1500-2500
    Chevrolet Suburban/GMC Yukon XL
    Chevrolet Tahoe/GMC Yukon
    LM4 (all-aluminum) applications:

    Chevrolet TrailBlazer EXT
    GMC Envoy XL
    2004 Chevrolet SSR
    L33 applications:

    Chevrolet Silverado 1500-2500/GMC Sierra 1500-2500

    L59 (flexible-fuel, allowing E85) applications:

    Chevrolet Suburban/GMC Yukon XL
    Chevrolet Tahoe/GMC Yukon
    2007 Chevrolet Avalanche
    2007 GMC Sierra Classic

    [edit] LH6
    An improved LH6 version with Displacement on Demand will push output even higher. It is a Generation IV small-block and features the improvements found on other Gen4 motors. An early batch of fifty 2005 Saab 9-7X SUVs for the Canada market used this engine with the Displacement on Demand feature disabled.

    LH6 applications:

    2005 Chevrolet TrailBlazer EXT/GMC Envoy XL SUVs
    2005 GMC Envoy XUV
    2005 Buick Rainier (without Displacement on Demand)
    2005 Saab 9-7X
    2005 Subaru B9 Casanova SUV (without Displacement on Demand)

    [edit] 5700
    The Vortec 5700 L31 is a V8 truck engine. Displacement is 5.7 L. It is the last production Generation I small-block from Chevrolet. It is also the last production all-iron Chevrolet small-block V8. The cylinder heads feature combustion chambers very similar to those of the LT1 V8, but without the reverse-flow cooling. As such, the L31 head is compatible with all older small-blocks, and is a very popular upgrade. It offers the performance of more expensive heads, at a much lower cost. It does, however, require a specific intake manifold (Vortec heads have 4 bolts attaching the intake manifold as opposed to the traditional six bolts). The L31 was replaced by the 5.3 L 5300 LM7. The 2002 model year was the final year for the L31 5.7 L small block V-8 whose origins date back to 1955. This engine was also available in HD GM trucks until 2005. It is currently being produced for marine applications after some minor changes.

    L31 applications:

    1996-2003 Chevrolet Express/GMC Savana full-size vans
    1996-1998 General Motors C/K full-size trucks
    1996-1999 Chevrolet Suburban/GMC Yukon XL full-size long-wheelbase SUVs
    1996-1999 Chevrolet Tahoe/GMC Yukon full-size short-wheelbase SUVs
    1999-2000 Cadillac Escalade
    TBI L31 applications

    1996 G-series Vans over 8,500 GVW w/ 4L80E\

    [edit] 6000

    HO 6000 engine in a 2003 Cadillac Escalade EXTThe Vortec 6000, or LQ4, is a V8 truck engine. It is a bored version of the Vortec 5300. Displacement is 6.0 L (5967 cc) from 101.6 mm bore and 92 mm stroke. It is an iron/aluminum design and produces 300-325 hp (224-242 kW) and 360-370 ftlbf (488-502 Nm). LQ4s are built in Romulus, Michigan and Silao, Mexico.

    LQ4 applications:

    Chevrolet Express/GMC Savana
    Chevrolet Silverado 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab
    Chevrolet Suburban/GMC Yukon XL Denali
    Hummer H2 SUT
    GMC Yukon Denali

    [edit] HO 6000
    The Vortec HO 6000 or VortecMAX, technically the LQ9, is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac. This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp and 10 ftlbf, bringing output to 345 hp (257 kW) and 380 ftlbf (515 Nm). LQ9s are built only in Romulus, Michigan.

    LQ9 Applications:

    2002-2005 Cadillac Escalade
    2002-2005 Cadillac Escalade EXT
    2003-2005 Cadillac Escalade ESV
    2003-2005 Chevrolet Silverado SS
    2004-2005 GMC Sierra Texas Truck Edition
    2005-2005 GMC Sierra Vortec HO Edition Only [Badging on truck]

    [edit] L76
    See also the automotive L76
    The L76 version of the Vortec 6000 features variable cam phasing on both the intake and exhaust sides, though both are linked. It produces 355 hp (265 kW) at 5400 rpm and 365 ftlbf (495 Nm) at 4400 rpm. Production starts in late 2006.

    L76 applications:

    Chevrolet Suburban
    Chevrolet Avalanche

    [edit] 6200
    The 2007 Cadillac Escalade will debut with a 6.2 L Vortec 6200 (RPO L92) engine. It is an all-aluminum design which, while still a pushrod engine, boasts variable valve timing, a first in a mass-produced non-overhead cam V8 engine. The system adjusts both intake and exhaust timing between two settings. This engine produces 403 hp (301 kW) and 417 ftlbf (565 Nm) in the Cadillac, but inexplicably is only rated at 380 hp and 415 ftlbf in the GMC Denali.

    Applications:

    2007+ Cadillac Escalade
    2007+ GMC Yukon Denali/Denali XL

    [edit] 7400
    The Vortec 7400 was a truck version of the Chevrolet Big-Block engine. Introduced in 1996, it was produced for five years until being replaced by the Vortec 8100. The 7.4L V8 features MPFI (multi-port fuel injection). Among the many improvements was more power for the gasoline engines. The Vortec 7400 big block V8 produces 290 horsepower at 4000 rpm and 410 lb-ft of torque at 3200 rpm.


    [edit] 8100
    The Vortec 8100 (RPO L18) is a V8 truck engine. It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. It retains the same bore centers as the old 7.4 L big-blocks, but stroke was upped by 9.4 mm to reach 8.1 L (8128 cc) for a total of 107.95 mm bore and 111 mm stroke. It is an all-iron engine (block and heads) with two valves per cylinder. Power output ranges from 225 hp to 340 hp (168 kW to 254 kW) and torque from 350 ftlbf to 455 ftlbf (475 Nm to 617 Nm). Vortec 8100s are built in Tonawanda, New York.

    L18 Applications:

    Chevrolet Avalanche
    Chevrolet Silverado/GMC Sierra 2500HD & 3500 (option)
    Chevrolet Suburban/GMC Yukon XL (option)
    Last edited by shabysurf; 12-07-2006 at 10:52 AM.

  4. #4
    Junior Member shabysurf's Avatar
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    your going to need new pistons, also get rid of the carb setup. Sinse I'm guessing your on a budjet, I would also get atleast a ls6 intake, a ecu, atleast a 80mm-90mm tb and mafsensor, and a fuel rail and injectors, and any other components that you might need to hook up to your existing fuel system. I'm guessing you already have an adequet fuel system if you have a v8. Go to a junk yard, locate a totaled camero or bird, just make sure it has a ls2 or ls6, and strip it, take everything you need and more, I would take the valve covers convert to coil over plug ignition, when done, get a custom tune on the ecu! good luck!

    also there might be some internal parts that you might want, you could probably use the heads and cam, the ls6/ls2 is ratted at 400 hp. dont buy the 6.0/lq9 heads, its not worth it, if you already bought them, sell them on ebay while they are still new, the money that you would get back would be enough to do this conversion, if you can find the donor

    Oh yah, a 400 hp s10, very sleeperish! me like! can you say driftmobile!
    Last edited by shabysurf; 12-07-2006 at 11:08 AM.

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    Quote Originally Posted by shabysurf View Post
    your going to need new pistons, also get rid of the carb setup. Sinse I'm guessing your on a budjet, I would also get atleast a ls6 intake, a ecu, atleast a 80mm-90mm tb and mafsensor, and a fuel rail and injectors, and any other components that you might need to hook up to your existing fuel system. I'm guessing you already have an adequet fuel system if you have a v8. Go to a junk yard, locate a totaled camero or bird, just make sure it has a ls2 or ls6, and strip it, take everything you need and more, I would take the valve covers convert to coil over plug ignition, when done, get a custom tune on the ecu! good luck!

    also there might be some internal parts that you might want, you could probably use the heads and cam, the ls6/ls2 is ratted at 400 hp. dont buy the 6.0/lq9 heads, its not worth it, if you already bought them, sell them on ebay while they are still new, the money that you would get back would be enough to do this conversion, if you can find the donor

    Oh yah, a 400 hp s10, very sleeperish! me like! can you say driftmobile!

    i dont think you read my post correctly??

    why would i need new pistons, the 6.0 i picked up is a take out engine(complete), no miles on it,,, my s-10 already has a 5.3 in it, it is the same engine as the 6.0(6.0 just has a larger bore), so i am swapping my ported 241LS1 heads and ls1 hot cam that are on my 5.3 now over to the 6.0


    i already have coil over plug ignition with my carb set up, im using the msd ls1 box to fire all the coils

    400 hp??, my 5.3 has to make close to that now, the truck runs 11.90's in the 1/4 with the 5.3,, the 6.0 should wake it up a bit

    i already have a 1994 10sec LT4 camaro that has fuel injection, this s-10 is my beater truck, i drive it to work and haul out the yard waste with it, that is why im keeping the carb on it
    Last edited by jay_lt4; 12-07-2006 at 07:08 PM.

  6. #6
    Junior Member shabysurf's Avatar
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    my bad, I read it wrong, I thought you bought just the block and was switching EVERYTHING to the new block

    p.s. this would be a cheaper way to do it, esp. for a beater if you do all the work yourself, it would also give you an excuse to put in new piston to match your heads and cam

    also the 5.3 truck engine is a L33, the 6.0 is a LQ4, and the 6.0H.0. is a LQ9
    internals are the same except pistons, it might be cheaper to just have your 5.3 bored to 101.6mm, or bigger, and just buy a set of pistons.

    The only thing is that I'm not sure how large the L33 can be bored to, I know the LQ's can be bored and stroked to 400ci. (the L33 can be easily bored to that of a LQ, but I'm not sure how much larger) it depends how big you want to go later on.

    I want to b&s my motor, but am debating wether or not I should keep my 5.3, or get the 6.0 to do that.
    if the 5.3 can reach 400ci than I'll keep it
    Last edited by shabysurf; 12-08-2006 at 10:21 AM.

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    5.3 can be bored to the 5.7 ls1 piston size max

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    black, 05 Roush
    black, 99 T/A WS.6

    241 heads..
    1999 T/A WS6 Black -------SOLD
    05 mustang Roush sport;
    DOB manifold, m122 SC, 47lb injectors, gt500 TB, roush TVS CAI, Detroit rocker SC grind camshafts, Mac LTs, off road x, roush off road mufflers, roush short throw shifter, kenne bell BAP, Brenspeed 93 octane tune. 479rwhp 436ftlbs SAE.

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    it runs, here is the 6.0L, ported 241 heads, LS1 hotcam:

    click on pic for video


  10. #10
    Quote Originally Posted by jay_lt4 View Post
    it runs, here is the 6.0L, ported 241 heads, LS1 hotcam:

    click on pic for video

    Click for full size

    Nice work.

    What is the CR of the 6.0L with 5.7L 241 heads?

    How much do you think one will gain on stock 6.0L by using 5.7L 241 heads.

  11. #11
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    Quote Originally Posted by Bluecamaroz28 View Post
    Nice work.

    What is the CR of the 6.0L with 5.7L 241 heads?

    How much do you think one will gain on stock 6.0L by using 5.7L 241 heads.
    should be almost 10.0-1

    carcraft just did an article last month on a used 6.0 engine, they put a gm ls1 hotcam in it and used the carb intake and msd box that i have and there used engine made 480 hp at 6000 rpm

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