LQ4 or L76? - Team Camaro Tech
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post #1 of 14 (permalink) Old Apr 13th, 15, 02:21 AM Thread Starter
Nabil
 
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LQ4 or L76?

Hello everyone. I'm fairly new to the site and nada question.

I have the opportunity to purchase one of two setups and. It sure which way to go. I will list the different setups and if you can give me some feedback that would be great.

LQ4 with 4L80E

L76 with 4L60E from truck

The L76 has higher miles and I would need to do some work to the transmission to make it 2WD.

Any info would be appreciated.
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post #2 of 14 (permalink) Old Apr 13th, 15, 06:43 AM
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Re: LQ4 or L76?

LQ4 with 4L80 has more potential for more power than the other one. I didn't realize the L76 came in trucks, thought they only came in cars. If either has DOD (Displacement on demand), costs will be higher to remove it. It would be easier to sell the 4WD trans and buy a 2wd version instead of paying to convert it. What years are both of the combos? Are they complete? Are you going to use the wiring harness or accessories in your swap?

Chris
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post #3 of 14 (permalink) Old Apr 13th, 15, 10:16 AM
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Re: LQ4 or L76?

I have the LQ4 and a 4L80E in my '99 silverado 2500. It is an awesome engine. I like the torque output of this engine. I use it to tow and I basically bought the truck for the engine/trans combo. I have towed alot with it, and never have felt that it was down on power or torque. Even pulling heavy trailers up over mountain passes, it will do it.

If the LQ4 is the early version with iron heads, I think that is better because they are more reliable and less prone to wraping or cracking.

I would go with the LQ4. The 4L80E is a superior transmission.

I did have to replace the engine at 180,000 miles. It developed a rod knock. I was dissapointed it did not last longer.

The important thing here is that you ask me what kind of car I've got. "I've got a BITCHIN' CAMARO"
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'68 350 4 speed
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post #4 of 14 (permalink) Old Apr 13th, 15, 10:52 AM
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Re: LQ4 or L76?

The L76 is by far the better choice in my opinion but it depends upon your intended use. The L76 does feature Active Fuel Management and Variable Cam Phasing (timing) when coupled with a 6L80e transmission (a 4L80e upgrade). This alone is worth the additional expense of buying the 6L80. The 6L80 also offers very smooth shifting by splitting gears to get the six forward speeds out of a 4L80 size case (compared to the larger 6L90 which uses the Alison transmission out of a school bus or Corvette's rear transaxle). If you are not going to use the features of Active Fuel Management and Variable Cam Phasing then you would be better off with the older less powerful LQ4 (325 horse for the LQ4 vs. 367 horse out of the same base 6.0 liter engine for the L76).

So the Variable Cam Phasing improves power and the Active Fuel Management saves gas by turning your V8 into a V4 as you cruise (that alternates the dead cylinders while driving to even out the wear on the fly). The L76 with it's aluminum block and heads is also a lot lighter getting you to the stripe faster (every 100 pounds of weight you loose from a car's weight removes a tenth of a second from the E.T.). The LQ4 comes with an iron block and half of the production engines made also have cast iron heads so you have to look for a newer donor to get aluminum heads.

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post #5 of 14 (permalink) Old Apr 13th, 15, 09:57 PM
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Re: LQ4 or L76?

Go big block, sorry just trolling. Figured every ls guy jumps on a big block thread and says go Ls, just a little pay back.
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post #6 of 14 (permalink) Old Apr 14th, 15, 12:10 AM Thread Starter
Nabil
 
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Both combinations are complete with everything.

The LQ4 with 4L80E 2wd is from a 2006 and only has 25,000 miles

The L76 with 4L60E 4wd is from 2007 Silverado and has 70,000 miles

I'm just looking to cruise the car, nothing special. It is going in a 67 pro touring Camaro. Are the both similar to modify to get more HP? I would like to get around 500hp.


Thank you all for all your responses, so helpful already!
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post #7 of 14 (permalink) Old Apr 14th, 15, 03:46 AM
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Re: LQ4 or L76?

Either would be fine...But I'm partial to the LQ4

The LQ4 got aluminum heads (317's or as the LY6 which got some L92/LS3 heads)

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #8 of 14 (permalink) Old Apr 14th, 15, 04:16 AM
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Re: LQ4 or L76?

I like the LQ4 and 4L80. I purchased the heads and intake from a 2013 Camaro and installed it on my 6.0. With a cam change, I am sure that I am at 500 hp.

Tory
1968 Camaro Coupe
1964 Malibu SS Unrestored 36,000 Mile Survivor
1964 Malibu SS Hardtop
1966 Chevelle SS 396
1968 Malibu L-79, 1 of 4082 ~ SOLD
1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor
1955 Chevrolet Nomad
1984 Hurst Olds with Factory Sunroof, 1 of 99 ~ SOLD
1992 Camaro 396 LS, 4L60, 9" Posi w /3.50:1 Gear Set
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post #9 of 14 (permalink) Old Apr 14th, 15, 10:24 AM Thread Starter
Nabil
 
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LQ4 it is,

I have the option to get anything I need from the truck. Does anyone know exactly what parts I would need for the swap

Appreciate the help

Engine
Transmission
Gas pedal
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post #10 of 14 (permalink) Old Apr 14th, 15, 10:29 AM
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Robert
 
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Re: LQ4 or L76?

I have done exactly what you are about to do, I have posted a list of all the parts I used and issues I had. Just search for "LQ4 to 69 camaro swap parts list".
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post #11 of 14 (permalink) Old Apr 14th, 15, 10:55 AM
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Re: LQ4 or L76?

Are you guys talking about 500hp at the crank or to the wheels? Obviously there's a HUGE difference between those two goals.


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post #12 of 14 (permalink) Old Apr 14th, 15, 11:25 AM
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Tory
 
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Re: LQ4 or L76?

For anyone interested, these are the parts that I used for the short Corvette Water Pump configuration:

Water Pump ~ AC Delco 251-726
Power Steering Pump ~ AutoZone 63106
Power Steering Reservoir Kit ~ Holley 198-200
Power Steering Pulley ~ Chevrolet Performance 12568997
Driver Side Bracket Kit for Alternator and Power Steering Pump ~ Holley 20-135
Accessory Drive Bracket Kit for SD508 A/C Compressor ~ Holley 20-132
Harmonic Balancer ~ ATI Super Damper 917266

I was able to use the truck alternator that came with the 6.0.

Tory
1968 Camaro Coupe
1964 Malibu SS Unrestored 36,000 Mile Survivor
1964 Malibu SS Hardtop
1966 Chevelle SS 396
1968 Malibu L-79, 1 of 4082 ~ SOLD
1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor
1955 Chevrolet Nomad
1984 Hurst Olds with Factory Sunroof, 1 of 99 ~ SOLD
1992 Camaro 396 LS, 4L60, 9" Posi w /3.50:1 Gear Set
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post #13 of 14 (permalink) Old Apr 14th, 15, 12:12 PM Thread Starter
Nabil
 
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What I actually meant was what parts off the truck I can use that will work in the swap. I have access to everything.

Just the motor, tranny, pedal and computer? Or is there more I can use?
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post #14 of 14 (permalink) Old Apr 14th, 15, 01:40 PM
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Re: LQ4 or L76?

Quote:
Originally Posted by 67Rally View Post
Are you guys talking about 500hp at the crank or to the wheels? Obviously there's a HUGE difference between those two goals.
I was around 400-425 at the wheels with a bad converter (17% slip) but she has a lot more in her (3300ish #, 11.32 @ 117 ....uncorrected)

500+RWHP can be done with the right cam/head combo...NA too

I'm guessing 550+FWHP once I get dialed in since the motor I copied went 9.98 in a 2900# car (but consistent 10.0's) and I'm roughly 3300# (going to get to scales soon) So I'm looking for mid 10's once done and it's got a 150 shot ready when I get there.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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