LS3 heads on my LS2
01-10-2017, 12:20 PM
#1
Drifting
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LS3 heads on my LS2
I have a '06 z/51 and wonder if the LS3 heads will interchange on my LS2? If so, is there a HP increase? I have the 243 heads now. Thanks...
01-10-2017, 06:58 PM
#2
Former Vendor
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Yes, and you have to do the intake at the same time. Tons of these have been done over the years. Pick up 20-25 hp to the tires with the heads/intake and tune approx. Before the LS3 was released a lot did the L76 swap which was pretty much the same thing. You will loose a slight bit of torque under 2000 RPM due to the head design but other than that, there is no downside to it at all.
You should be able to do the LS3 heads/intake/LG Long Tubes/cold air/LG G6X3 combo on a manual car and make close to 500 rwhp on pump gas and it would be approx $2200 cheaper than doing the AFR/FAST intake combo on the car.
https://www.google.com/search?q=ls3+...e=utf-8http://
You should be able to do the LS3 heads/intake/LG Long Tubes/cold air/LG G6X3 combo on a manual car and make close to 500 rwhp on pump gas and it would be approx $2200 cheaper than doing the AFR/FAST intake combo on the car.
https://www.google.com/search?q=ls3+...e=utf-8http://
Last edited by Anthony @ LGMotorsports; 01-10-2017 at 07:00 PM.
01-10-2017, 10:23 PM
#6
Melting Slicks
Ls3 heads milled .030 and ls3 intake will be worth more whp than a custom aftermarket set of heads for half price.
Having said that as for me is only custom or burst.
Having said that as for me is only custom or burst.
01-10-2017, 10:37 PM
#7
Drifting
I'm not saying they don't work or make power because they do. But the advantage of picking up xx hp is not what most are after. I want low end torque, which is where I spend most of my time on the street.
The TFS 220's on an Ls2, will make more power and torque from 1500 rpm on vs. the LS3 heads.
The LS3 heads and intake are a good budget, but not an optimal combination.
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iw172 (01-11-2017)
01-11-2017, 10:28 AM
#8
Melting Slicks
Too much valve shrouding on a 4.000" bore.
I'm not saying they don't work or make power because they do. But the advantage of picking up xx hp is not what most are after. I want low end torque, which is where I spend most of my time on the street.
The TFS 220's on an Ls2, will make more power and torque from 1500 rpm on vs. the LS3 heads.
The LS3 heads and intake are a good budget, but not an optimal combination.
I'm not saying they don't work or make power because they do. But the advantage of picking up xx hp is not what most are after. I want low end torque, which is where I spend most of my time on the street.
The TFS 220's on an Ls2, will make more power and torque from 1500 rpm on vs. the LS3 heads.
The LS3 heads and intake are a good budget, but not an optimal combination.
By the way the bone stock ls3 intake post flows 15 cfm more than the 220 cnc ported Trick flow heads.
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iw172 (01-11-2017)
01-11-2017, 11:22 AM
#9
Drifting
You are rite they make power but at twice the price and not sure about more low end torq, on a '06 gto I installed a set of ls3 heads in my friend car and he didn't want to get drag radials so not to kill his A4 stock transmission even with a small cam we had to keep the tune dial back, one day while at my house and a few other friends I asked him to go to the end of the road and come back and get on it just before my house my friends reaction was what the hell did you do to that car.
By the way the bone stock ls3 intake post flows 15 cfm more than the 220 cnc ported Trick flow heads.
By the way the bone stock ls3 intake post flows 15 cfm more than the 220 cnc ported Trick flow heads.
Looking at flow numbers alone does not allow for optimized power and or end results and that is why I recommend TFS 220 cathedrals on the LS2. First they were designed around that bore size and the combination can be better optimized to achieve the goals.
Do it one time and save money.
10-31-2022, 04:06 PM
#10
Too much valve shrouding on a 4.000" bore.
I'm not saying they don't work or make power because they do. But the advantage of picking up xx hp is not what most are after. I want low end torque, which is where I spend most of my time on the street.
The TFS 220's on an Ls2, will make more power and torque from 1500 rpm on vs. the LS3 heads.
The LS3 heads and intake are a good budget, but not an optimal combination.
I'm not saying they don't work or make power because they do. But the advantage of picking up xx hp is not what most are after. I want low end torque, which is where I spend most of my time on the street.
The TFS 220's on an Ls2, will make more power and torque from 1500 rpm on vs. the LS3 heads.
The LS3 heads and intake are a good budget, but not an optimal combination.
Sorry, but a spade is a spade, and I'm here to call it. This is just ridiculous logic. I hope the guy didn't listen to this I'll advised BS, and went with the LS3 heads and intake. A car set up with the right cam and LS3 heads on his LS2 block will run away and hide from a guy with TFS 220s. Not knocking TFS, but the LS3 heads will kill a 220 cathedral port. 245 AFR's? That may be a different story, but you could CNC port the LS3 heads and still save $$ over either aftermarket brand. If you want low end torque, buy a Kubota diesel.......
Last edited by grinder11; 10-31-2022 at 04:12 PM.
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old motorhead (10-31-2022)
10-31-2022, 05:59 PM
#11
Le Mans Master
Kubota diesels are toys when compared to some of the diesel engines used on farms these days. We have a "small" articulated 4x4 that makes around 1150 lb/ft of torque at 1400 rpm. It has 8 tires on it that are about 7' tall. No smokey burnouts for that one...
11-01-2022, 11:01 AM
#12
Just trying to make a point. I once was pulled out of a ditch by an 8 wheel drive John Deere tractor. 2 tires at each corner, about 7 feet tall each. He made me hook my end to my Blazer, a full size 1975 model. He hooked his end on the tractor. I asked him why he wanted me to hook up my end? He simply said this: When I start pulling you out, either all of you, or part of you, is coming with me, depending on where you hook up the strap. That tractor pulled my full size Blazer up out of the ditch sideways, and never spun 1 tire. YIKES!!!
Last edited by grinder11; 11-01-2022 at 12:16 PM.
