ls1 ported heads vs ls6 heads
Thread Starter
Teching In
Joined: May 2005
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ls1 ported heads vs ls6 heads So I am trying to upgrade the heads on my 00 corvette and am having difficulty deciding what to do. Do you guys recommend using ported ls1 heads or should I just get the ls6 heads? What is the best bang for the buck? (not best overall, but for price)
thanks
Ben
thanks
Ben
Originally Posted by WRXBen
So I am trying to upgrade the heads on my 00 corvette and am having difficulty deciding what to do. Do you guys recommend using ported ls1 heads or should I just get the ls6 heads? What is the best bang for the buck? (not best overall, but for price)
thanks
Ben
thanks
Ben
TECH Enthusiast
Joined: Mar 2004
Posts: 647
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From: Australia
I think it all depends on what you mean by "bang". Porting heads will definately increase the port area and increase top end power but at the cost of low down torque and port velocity. You will need to spin higher RPM to reach similar port velocities.
There is a point of max. efficiency that the cylinders can pump. Finding that point and matching it to peak effiency of ports and cam/valve events IMO is the biggest bang for buck there is.
From my understanding the LS6 heads are right about there. Mate it up to a good small-mid sized cam and you have a killer street setup that will perform equally well at the track compared to cams of much higher duration.
At least, thats what a years worth of keyboard research has lead me to believe.
Happy to be contradicted.
There is a point of max. efficiency that the cylinders can pump. Finding that point and matching it to peak effiency of ports and cam/valve events IMO is the biggest bang for buck there is.
From my understanding the LS6 heads are right about there. Mate it up to a good small-mid sized cam and you have a killer street setup that will perform equally well at the track compared to cams of much higher duration.
At least, thats what a years worth of keyboard research has lead me to believe.
Happy to be contradicted.
Ported LS1 heads(done properly) will outflow and outperform stock LS6 heads. LS6 heads should give you about 20 rwhp and ported LS1 heads (with stock valves) should give you 20-30 rwhp (depending on the skill or the porter). Upgrade to ported fully LS6 heads or AFR heads and you'll be looking at more like 40 rwhp increase. Patriot heads seem to give around a 20-25 rwhp increase. These numbers are based on gains with stock cam and bolt-ons. Run a larger cam and the gains will be more for each head.
__________________
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 bought a set of Ls6 heads. I figure its cheaper than the Fast intake with a lil more gains in power. I am hoping the ls6 heads will add 20ft/lbs of torque. That would make a noticable difference in power under the curve.
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Originally Posted by cyphur_traq
any info? port size? cc size?
I would port what I have, put in a bigger cam with better springs. I did this with my sons ls1 with a fast intake 90mm, headers and custom dual x exhaust. Car went from 300 rwhp to 410 rwhp. Get the exhaust right and everything will work lots better.
