LS1 vs. LS6 Heads
Drifting
Joined: Apr 2001
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From: Norman Oklahoma
Re: LS1 vs. LS6 Heads (wave_3)
LS6 Heads $1,000 http://forums.corvetteforum.com/zerothread?id=214398 I'm curious could you port the LQ9 heads and mill them down to LS6 compression or maybe more? Then you would basickly have ported LS6 heads for a lot less :cheers:
Jerry
Jerry
Team Owner
Joined: Jul 1999
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From: Buy USA products! Check the label! Employ Americans
Re: LS1 vs. LS6 Heads (99 Corvette)
The LPE heads I saw were probably stage 1 they were just hit with a CNC machine in spots as you looked in the ports. Like I said I am sure they can make as good a head as anyone but it will cost more than others. His overhead, and labor is more I'm sure.
Le Mans Master
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From: Fort Worth Texas
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Re: LS1 vs. LS6 Heads (99 Corvette)
LS6 Heads $1,000 http://forums.corvetteforum.com/zerothread?id=214398 I'm curious could you port the LQ9 heads and mill them down to LS6 compression or maybe more? Then you would basickly have ported LS6 heads for a lot less :cheers:
Jerry
Jerry
Le Mans Master
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From: Clouds Over California
Re: LS1 vs. LS6 Heads (John Shiels)
Not to be arguementative with "Staged" because he has a tendancy to make some valid points. But.......I drove my car until my H&C package arrived 4 weeks later at the installers shop. 2 days the H&C part was finished...the other 6 days were spent because the local GM dealership was out of new Slave cylinders. Stage II Ls6 and Ls1 heads from ARE differ by 5-7 RWHP (15-20 at the flywheel). The only point I was making is whether or not you feel that the 5-7 RWHP is worth the $1000.00. If you do than obviously you are going to buy the LS6 heads..if you don't...don't sweat it....because with numbers that close it will come down to the driver in a race.
Trivia....(inform me if you will) are the fastest LS1 cars using LS6 heads????? Your choice to answer 1/4 mile or top speed.
Trivia....(inform me if you will) are the fastest LS1 cars using LS6 heads????? Your choice to answer 1/4 mile or top speed.
Thread Starter
Race Director
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From: NE Ohio
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Re: LS1 vs. LS6 Heads (Shinobi's97)
Tough choice... I was leaning towards the LS6 heads because I have an A4 and could use the extra power, I really want to see 400RWHP.
With the heads and cam, I would naturally add a pulley and headers.
With the heads and cam, I would naturally add a pulley and headers.
Drifting
Joined: Apr 2001
Posts: 1,773
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From: Norman Oklahoma
Re: LS1 vs. LS6 Heads (kewlbrz)
LS6 Heads $1,000 http://forums.corvetteforum.com/zerothread?id=214398 I'm curious could you port the LQ9 heads and mill them down to LS6 compression or maybe more? Then you would basickly have ported LS6 heads for a lot less :cheers:
Jerry
You could, but when you mill heads too much, to achieve a specific volume, you begin to loose good combustion chamber characterisitics.
Jerry
You could, but when you mill heads too much, to achieve a specific volume, you begin to loose good combustion chamber characterisitics.
Jerry
Le Mans Master
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From: Fort Worth Texas
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Re: LS1 vs. LS6 Heads (99 Corvette)
You could, but when you mill heads too much, to achieve a specific volume, you begin to loose good combustion chamber characterisitics. Would this mean that LS6 heads would be better or would this mean the LQ9 heads are better and just get brought down to LS6 standards?
Jerry
Jerry
Its always better to have a combustion chamber engineered and sized to the applicable and desired chamber volume, rather than simply milling the head down to achieve the same volume. Other factor come into play if you mill too far, such as the need to use special length pushrods etc.
I would say that the LQ9 heads are the ultimate for forced induction, because the heads are allready designed with larger chambers.
On the other hand, LS6 heads are the ultimate for non-forced induction applications. (money not an issue), because the chambers are designed smaller to begin with.
Where that line is with LS6 and LQ9 is regarding how far can you mill a LQ9 head relative to starting with an LS6 head I will leave to answer to the tuners to answer.
Le Mans Master
Joined: Jul 1999
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From: jackson nj
Re: LS1 vs. LS6 Heads (wave_3)
Wave_3, my 98 A4 pulls 392 rwhp and that is with 3.42 gears (if you have 3.15's you will see a little more hp), and yields 11.7 ET's on drag radials while still being emissions legal. Keep in mind " BIGGER IS NOT ALWAYS BETTER", if you don't have the gears to use the RPM that the LS6 heads make the "better" power at, you gain nothing !! Chris is bringing up many valid points, and I understand all the other opinions, but I don't notice any impressive ET's being entered by the other guys that are close. Plus the driveability of my car is exceptional, it is fine on the street with 26 mpg on the highway, and when I go the the track (like on 12/16/01 @ Atco - 11.73/11.73/11.75 & 11.73) it runs very consistently. Why spend more money then you need to, no matter how little it is, it's still more !
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Thread Starter
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Joined: Feb 2001
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From: NE Ohio
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Re: LS1 vs. LS6 Heads (Red98C5)
Wave_3, my 98 A4 pulls 392 rwhp and that is with 3.42 gears (if you have 3.15's you will see a little more hp), and yields 11.7 ET's on drag radials while still being emissions legal. Keep in mind " BIGGER IS NOT ALWAYS BETTER", if you don't have the gears to use the RPM that the LS6 heads make the "better" power at, you gain nothing !! Chris is bringing up many valid points, and I understand all the other opinions, but I don't notice any impressive ET's being entered by the other guys that are close. Plus the driveability of my car is exceptional, it is fine on the street with 26 mpg on the highway, and when I go the the track (like on 12/16/01 @ Atco - 11.73/11.73/11.75 & 11.73) it runs very consistently. Why spend more money then you need to, no matter how little it is, it's still more !
