Head suggestions for Procharged C6
Thread Starter
Racer
Joined: May 2008
Posts: 408
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From: Fort Worth Texas
We typically use the PRC LS3 heads or the LQ9 heads if your wanting to save $$$. The LQ9 head will give you a 71cc chamber without having to buy new intake, injectors, fuel rail & TB. The LQ9 PRC Stage 2.5 heads typically add about 40rwhp! for reasonable money!
http://www.texas-speed.com/shop/item...d=133&catid=40
LS3 Heads:
http://www.texas-speed.com/shop/item...d=697&catid=40
The LQ9 head is available with stock valves for $1099 a pair!!
http://www.texas-speed.com/shop/item...d=133&catid=40
LS3 Heads:
http://www.texas-speed.com/shop/item...d=697&catid=40
The LQ9 head is available with stock valves for $1099 a pair!!
Thanks for the links. I checked your website, may be giving you a call in the near future.
Former Vendor
Joined: Dec 2006
Posts: 2,239
Likes: 1
I agree. No reason to be swapping heads when the boost is only at 6 psi. I'd add methanol and up the boost to 8-9 psi. Boost will come in sooner with the blower spinning faster, and you'll make a lot more power. Bob
Thread Starter
Racer
Joined: May 2008
Posts: 408
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From: Fort Worth Texas
Drifting
Joined: Feb 2007
Posts: 1,961
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From: Dubai
I definitely have plans on the meth kit and upping the boost. However, I've read a lot on boosted engines and in all things I read, removing exhaust is a must. I've talked to a friend that ports heads for Hennessy Viper and he has suggested that I just port the 243s on the car now. I have a blower cam already (not installed), and have ordered the meth kit. I plan on doing both of the Bollas mods. Right now, with stock engine, and the basic P1SC, I'm having heat issues. The car dynoed 490rwhp and 450rwtq. This seems low, but I think the heat is killing this car. I'm in Texas and last 2 weeks have been 100+. The temps on the car will run 225-230 down the highway, but as soon as it makes boost, forget it. Coolant hit 249 and oil temp was 276. This was under a load, of course. I know this is common with Procharger, but I want to take every precaution to eliminate the heat.
Safety Car
Joined: Oct 2001
Posts: 4,945
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From: Dallas/Valley Ranch TEXAS!!!
M.B.,
I feel your pain with this Texas heat!!! What is your HP goal for now... Notice I said FOR NOW...
Remember several of us are 700+rwhp with STOCK 243 heads, except for springs of course... And if you do want a cost effective head, the L92's are the only way to go... forget about the 243's they just aren't worth the work... Hell stock L92's will cost less than you having the 243's reworked and the STOCK L92's will way out flow them...
plus they have a thicker deck to boot... L92's + intake is very close to the price you'll spend on worked 243's... just trying to watch out for you... but depending on the blower cam grind you may be more than satisfied (for now) with the cam and Methanol injection and a GOOD tune... Remember it's ALL about the tune, make sure you have a tuner that has a LOT of experience with Methanol!!! That's the MOST important advice I can give you...
I feel your pain with this Texas heat!!! What is your HP goal for now... Notice I said FOR NOW...
Remember several of us are 700+rwhp with STOCK 243 heads, except for springs of course... And if you do want a cost effective head, the L92's are the only way to go... forget about the 243's they just aren't worth the work... Hell stock L92's will cost less than you having the 243's reworked and the STOCK L92's will way out flow them... plus they have a thicker deck to boot... L92's + intake is very close to the price you'll spend on worked 243's... just trying to watch out for you... but depending on the blower cam grind you may be more than satisfied (for now) with the cam and Methanol injection and a GOOD tune... Remember it's ALL about the tune, make sure you have a tuner that has a LOT of experience with Methanol!!! That's the MOST important advice I can give you...
Thread Starter
Racer
Joined: May 2008
Posts: 408
Likes: 0
From: Fort Worth Texas
M.B.,
I feel your pain with this Texas heat!!! What is your HP goal for now... Notice I said FOR NOW... Remember several of us are 700+rwhp with STOCK 243 heads, except for springs of course... And if you do want a cost effective head, the L92's are the only way to go... forget about the 243's they just aren't worth the work... Hell stock L92's will cost less than you having the 243's reworked and the STOCK L92's will way out flow them... plus they have a thicker deck to boot... L92's + intake is very close to the price you'll spend on worked 243's... just trying to watch out for you... but depending on the blower cam grind you may be more than satisfied (for now) with the cam and Methanol injection and a GOOD tune... Remember it's ALL about the tune, make sure you have a tuner that has a LOT of experience with Methanol!!! That's the MOST important advice I can give you...
I feel your pain with this Texas heat!!! What is your HP goal for now... Notice I said FOR NOW...
Remember several of us are 700+rwhp with STOCK 243 heads, except for springs of course... And if you do want a cost effective head, the L92's are the only way to go... forget about the 243's they just aren't worth the work... Hell stock L92's will cost less than you having the 243's reworked and the STOCK L92's will way out flow them... plus they have a thicker deck to boot... L92's + intake is very close to the price you'll spend on worked 243's... just trying to watch out for you... but depending on the blower cam grind you may be more than satisfied (for now) with the cam and Methanol injection and a GOOD tune... Remember it's ALL about the tune, make sure you have a tuner that has a LOT of experience with Methanol!!! That's the MOST important advice I can give you...Big,
Do you recommend a local tuner that is familiar with methanol? I've heard that Patrick at Quality Motorsports is one of the better in the area.
Safety Car
Joined: Oct 2001
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From: Dallas/Valley Ranch TEXAS!!!
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Thread Starter
Racer
Joined: May 2008
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From: Fort Worth Texas
I've never heard that before. Most kits recommend 50/50, but I know you can adjust to whatever ratio you please.
Last edited by Mein Blower; Aug 7, 2008 at 12:36 PM.
Le Mans Master
Joined: Oct 2007
Posts: 6,149
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From: Greater Detroit Metro MI, when I'm not travelling.
Never heard of a water mixture blowing the flame out; for what its worth most of the original detonation suppression systems (the technology has been around for many decades and was used in a lot of the first turbo cars and also on fighter planes tuned for optimum operation at high altitude and low density air and thus prone to detonation on takeoff when atmospheric pressure was a lot higher) were pure water. The rally cars I saw and worked on at Rally America were all running 50/50... I doubt the issue is flame blowout but I could see an issue where the plug gap is excessive or the ignition coil voltage insufficient to provide ignition of the mixture if you were running a ton of auxiliary injection.
Safety Car
Joined: Oct 2001
Posts: 4,945
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From: Dallas/Valley Ranch TEXAS!!!
You should really listen to Bob on this one... and NO 100% methanol will NOT hurt anything in your engine/intake... SEVERAL hundred of us have run 100% Methanol in more than just our C6 Corvettes for SEVERAL years... Doug and Chris at ECS have posted tons of back to back dyno pull comparisons on this subject... 100% Methanol wins EVERY time... VP Fuels "M3" has some additives in their blend that make Methanol even more friendly, for those with worries...
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
You should really listen to Bob on this one... and NO 100% methanol will NOT hurt anything in your engine/intake... SEVERAL hundred of us have run 100% Methanol in more than just our C6 Corvettes for SEVERAL years... Doug and Chris at ECS have posted tons of back to back dyno pull comparisons on this subject... 100% Methanol wins EVERY time... VP Fuels "M3" has some additives in their blend that make Methanol even more friendly, for those with worries...
"most pumps and lines are NOT warrantied for 100% methanol and will fail". Do a quick search on methanol injection here and you will see that there are PLENTY of systems here that had their pumps start leaking from failed seals after usage at 100% methanol. In fact a lot of pumps carry warnings specifically against doing that. As I recall ECS uses a kit made by a company that does rate it for 100% meth, but theirs is by no means the only kit people on this site use
As a general rule I avoid saying things like "NO 100% methanol will NOT hurt anything in your engine/intake" because I am not the one who is going to be paying for the repairs if it does
Also I never said anything about the engine or intake, I said the damage I have seen occurs at the pump and/or lines.
Safety Car
Joined: Oct 2001
Posts: 4,945
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From: Dallas/Valley Ranch TEXAS!!!
P.L.
AIS, SNOW, ALKY Control all have updated systems for use with 100% methanol. Those are the only systems that I've seen any one use for the past few years... And don't assume that we (Mein Blower and I) haven't already discussed the ALKY control system via P.M.... I stand behind EXACTLY what Bob and I BOTH said... But you can be careful if you wish to... I only try to help others with experience from miles of use and LOTS of racing!!! I also like to dispell all the b.s. rumors created by those that aren't in the know...
BTW what Methanol injection system do you run on your C6?
AIS, SNOW, ALKY Control all have updated systems for use with 100% methanol. Those are the only systems that I've seen any one use for the past few years... And don't assume that we (Mein Blower and I) haven't already discussed the ALKY control system via P.M.... I stand behind EXACTLY what Bob and I BOTH said...
But you can be careful if you wish to... I only try to help others with experience from miles of use and LOTS of racing!!! I also like to dispell all the b.s. rumors created by those that aren't in the know...BTW what Methanol injection system do you run on your C6?
Last edited by Mr.Big; Aug 7, 2008 at 07:49 PM.
