LS3 heads Will they work
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LS3 heads Will they work I was looking in to getting ls3 cnc machined heads for my 1999 Z28 and was wondering if they would work with a MS4 cam shaft..Any info would be greatly appreciated
Don't do it. They make great power numbers and people are blinded by the great flow numbers. When i removed my cnc ls3/l92 heads for trick flow heads i gained 20 hp under the curve and 15 lbs more tq over the ENTIRE rpm band. my car gained 3 tenths with a much worse 60 foot. Get good heads one time like trick flow or afr,you will gain more power go faster and you will not be sad you did my friend. try a 215 head from tfs or afr. Remember the big key''you do get what you pay for''.
Last edited by mike c.; Aug 2, 2011 at 09:21 AM.
LS3 heads need a minimum of a 4" bore! So no they won't fit a stock LS1. We have some ported LS6 heads that flow as good or better then a LS3 head. Check out our site JuicedMotorsports.com for some more info on them.
Let me add one last thing. The ls3 head out flowed my trick flow heads and yet the tfs head made big gaines flowing less. There is more to a head then flow numbers. there is chamber design,valve job,valve guid honing,the quality of casting these are things that are over looked when buying budget heads. This is where i say you get what you pay for in quality and performance.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
Last edited by mike c.; Aug 2, 2011 at 09:34 AM.
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Let me add one last thing. The ls3 head out flowed my trick flow heads and yet the tfs head made big gaines flowing less. There is more to a head then flow numbers. there is chamber design,valve job,valve guid honing,the quality of casting these are things that are over looked when buying budget heads. This is where i say you get what you pay for in quality and performance.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
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Don't do it. They make great power numbers and people are blinded by the great flow numbers. When i removed my cnc ls3/l92 heads for trick flow heads i gained 20 hp under the curve and 15 lbs more tq over the ENTIRE rpm band. my car gained 3 tenths with a much worse 60 foot. Get good heads one time like trick flow or afr,you will gain more power go faster and you will not be sad you did my friend. try a 215 head from tfs or afr. Remember the big key''you do get what you pay for''.
For example this thread with a motor done by TSP: https://ls1tech.com/forums/dynamomet...o-results.html
Ls1=3.898" bore
Ls2=4.000" bore
Ls3+4.065" bore...The General feels this is an adecuate size can to unshroud
a 2.165" diameter intake valve
I wouldn't use these heads on a 408 (4.03X4.00") unless it was a drag only
application...big split dur cam, high rpms, lotta gear
Street apps need torque, airspeed comes from an efficient port, ls3s are 265
cc volume
Ls2=4.000" bore
Ls3+4.065" bore...The General feels this is an adecuate size can to unshroud
a 2.165" diameter intake valve
I wouldn't use these heads on a 408 (4.03X4.00") unless it was a drag only
application...big split dur cam, high rpms, lotta gear
Street apps need torque, airspeed comes from an efficient port, ls3s are 265
cc volume
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Teching In
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From: Clarksville,TN & Fayetteville,NC
I was thinking of going with ported AI ls2 heads. I was just wondering if i would have to do any cutting of any type...ex: flycutting... Any suggestions on heads with an ls1 with a ms4 cam, hooker headers 1 7/8, ls6 intake, ported polished ls6 oil pump, ls2 timing chain.
Don't do it. They make great power numbers and people are blinded by the great flow numbers. When i removed my cnc ls3/l92 heads for trick flow heads i gained 20 hp under the curve and 15 lbs more tq over the ENTIRE rpm band. my car gained 3 tenths with a much worse 60 foot. Get good heads one time like trick flow or afr,you will gain more power go faster and you will not be sad you did my friend. try a 215 head from tfs or afr. Remember the big key''you do get what you pay for''.
Let me add one last thing. The ls3 head out flowed my trick flow heads and yet the tfs head made big gaines flowing less. There is more to a head then flow numbers. there is chamber design,valve job,valve guid honing,the quality of casting these are things that are over looked when buying budget heads. This is where i say you get what you pay for in quality and performance.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
JUICED1-This was not saying anything against the heads your talking about. This is just me using two cnc heads in the past and running a AFR and a trick flow head on different motors and gaining big each time. due to that,i push the AFR and trickflow heads.
And for what it's worth, the L92 heads won't fit on a bore smaller than the 4.00" anyway. And one final thing, you cannot run more than a 231 duration intake lobe on a 112 intake centerline before you are tighter than .080" piston to valve. Big cam guys will need to flycut or risk contact.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Yes, HK Racing Engines cut down the LS3 intake valves to something closer to 2.13". This still fit on the stock LS3 seats and flow numbers were around 400cfm. Sadly, the 6.2L 2010 Camaro they were installed on did not break 500rwhp. This is why I say you can't judge power potential only by flow numbers.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
I have PRC 2.5 LS3/l92 heads with a ported LS3 intake and PTM 92mm TB. My cam was spec'd by the man above (Pat G) I have no complaints on RWHP number, or street/track performance. Its the total setup that makes or breaks a car IMO. Throwing together a lot of off the shelf parts wont always give you the best outcome. Nor will the biggest flow numbers and largest cam you can find.
11.7:1 402 (LS2 block) 244/256 on a 114 LSA cam. Put down 554rwhp, and has put my 37xx lb car 10.8x@132 with a M6, and thats with a very novice driver (i'm terrible). I drove the car on a 700 mile road trip and got 22ish MPG and you can usually find me cruising around on the streets with my AC blasting.
11.7:1 402 (LS2 block) 244/256 on a 114 LSA cam. Put down 554rwhp, and has put my 37xx lb car 10.8x@132 with a M6, and thats with a very novice driver (i'm terrible). I drove the car on a 700 mile road trip and got 22ish MPG and you can usually find me cruising around on the streets with my AC blasting.
My car ran 10.63 130.8 on a 1.55 60 in a car that is 3480+my 230lbs(3,710). I got the intake ported and pat g did a cam spec for me. I hope to see 10.4 or 10.5 in a car i can daily and gets 20+mpg. I feel the trick flow and afr is a easier head to make more power and go faster.. BWARREN337-Good luck to you my friend.
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Thats all great info guys appreciate it...im going to keep doing some research and try and figure out a little bit more on what heads will go great for the setup i have...
These use a smaller 2.04 intake valve. The flow#'s are insane but haven't had any luck finding anyone running them.
http://www.mastmotorsports.com/2010/...sembled&id=360
http://www.mastmotorsports.com/2010/...sembled&id=360
