Finally have the $ but can't decide on heads
08-06-2013, 11:07 PM
#1
Finally have the $ but can't decide on heads I have a Torquer 2 cam only, specs in signature.
I'm looking at factory LS6, Stage 2.5LS6 or Stage 2.5 6.0L heads
The car will be used on street/strip. I don't have a big intake manifold or throttle body yet, still factory LS6 setup.
What's the best route?
I'm looking at factory LS6, Stage 2.5LS6 or Stage 2.5 6.0L heads
The car will be used on street/strip. I don't have a big intake manifold or throttle body yet, still factory LS6 setup.
What's the best route?
08-06-2013, 11:14 PM
#2
I assume you're asking about the PRC stuff?
This is a topic that has been beaten to death daily on this site for years. Search. There's a lot of threads on the PRC heads. A lot on TFS. AI. TEA. AFR.
Look at the results. Look at the options. Look at your budget, which btw, you never provided.
This is a topic that has been beaten to death daily on this site for years. Search. There's a lot of threads on the PRC heads. A lot on TFS. AI. TEA. AFR.
Look at the results. Look at the options. Look at your budget, which btw, you never provided.
08-06-2013, 11:18 PM
#3
I was actually just reading threads for over an hour but the actual subject tapers off after the first few posts. I'm not against spending the $1500 on PRC heads, however a good set of 243's for around $400 is a lot more wallet friendly. I could use that other $1000 on a Fast setup or something else.. I'm already over my goal of 400 to the wheels this is just extra.
08-06-2013, 11:43 PM
#4
A set of good heads will make like another 30-40rwhp over LS6 heads. Which themselves are 15-20rwhp over LS1 heads. A FAST won't get you 60rwhp.
However, a FAST paired with budget heads will outpower an LS6 intake and awesome heads and it would be roughly the same price...
Also, don't search on the site. Search the site through Google. It will help you more.
However, a FAST paired with budget heads will outpower an LS6 intake and awesome heads and it would be roughly the same price...
Also, don't search on the site. Search the site through Google. It will help you more.
08-06-2013, 11:58 PM
#6
I'm thinking the Stage 1.0 LS6 heads from PRC might be my best bet at just over $1000. I definitely don't have $2400 to spend like that. I have about $1600 put away.
Here's another question, since I already have dual valve springs with only about 3000 miles on them, is there any reason for me to get new ones? Can I reuse the old parts or do I HAVE to get another set of dual springs.
Here's another question, since I already have dual valve springs with only about 3000 miles on them, is there any reason for me to get new ones? Can I reuse the old parts or do I HAVE to get another set of dual springs.
08-07-2013, 12:02 AM
#7
You can reuse them.
There are a couple of other options besides PRC as well. Advanced Induction can port your stock heads for 999 and it would probably add 50-55rwhp. TEA can as well for similar gains and a similar price. Both offer CNC combustion chambers, which PRC does not do even on their Stage 2.5 heads.
The LS6 is the better head, but in the hands of the right porter, the LS1 heads can make serious power and it would be cheaper.
Another option is Livernois. They have their Stage 1 LS6 heads for 999 on sale right now. Those heads make a lot of power. I think they require a core tho, so that might not work.
If you don't want the car to have down-time while the stock heads are ported, the PRC Stage 1 LS6 heads would serve you well and would make probably 40-45rwhp over stock.
There are a couple of other options besides PRC as well. Advanced Induction can port your stock heads for 999 and it would probably add 50-55rwhp. TEA can as well for similar gains and a similar price. Both offer CNC combustion chambers, which PRC does not do even on their Stage 2.5 heads.
The LS6 is the better head, but in the hands of the right porter, the LS1 heads can make serious power and it would be cheaper.
Another option is Livernois. They have their Stage 1 LS6 heads for 999 on sale right now. Those heads make a lot of power. I think they require a core tho, so that might not work.
If you don't want the car to have down-time while the stock heads are ported, the PRC Stage 1 LS6 heads would serve you well and would make probably 40-45rwhp over stock.
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08-07-2013, 02:10 AM
#8
TECH Senior Member
Guys something I wish people would understand is that not all porting is equal. There is a difference between porters and their programs, not all are equal in performance.
The heads are the lungs of the motor and the unit being a pump the more air you move in the more fuel you can add and more power can be squeezed out.
LS6 intake can support 450rwhp if done right.
If it were me I would send my springs to AI and get a 219cc porting job on your 241 heads with proper chamber size for your cam. 59 or 60 cc would yield 11:1 compression and good dynamic compression.
See they weld the stock chambers, then shape them accordingly to desired chamber size while keeping close to stock PTV clearance.
That would be within your budget and will add at least 40+rwhp to your setup.
The heads are the lungs of the motor and the unit being a pump the more air you move in the more fuel you can add and more power can be squeezed out.
LS6 intake can support 450rwhp if done right.
If it were me I would send my springs to AI and get a 219cc porting job on your 241 heads with proper chamber size for your cam. 59 or 60 cc would yield 11:1 compression and good dynamic compression.
See they weld the stock chambers, then shape them accordingly to desired chamber size while keeping close to stock PTV clearance.
That would be within your budget and will add at least 40+rwhp to your setup.
08-07-2013, 09:36 AM
#10
reworking the 241's isn't a bad idea, but I want to keep all of the factory parts "stock" I still have every factory part ever on the car just in case.
No matter what, it seems like $1000 will yield the results I'm looking for, but I can imagine that no two ported heads are the same. The best option is definitely to have a set milled to my cam specs. Maybe I should get a used 241 or 243 set and have the porting done to your specs Predator, you're pretty knowledgeable on this stuff.
No matter what, it seems like $1000 will yield the results I'm looking for, but I can imagine that no two ported heads are the same. The best option is definitely to have a set milled to my cam specs. Maybe I should get a used 241 or 243 set and have the porting done to your specs Predator, you're pretty knowledgeable on this stuff.
08-07-2013, 09:47 AM
#13
Downtime is no concern. The next time I might be driving the car is to Ocean City for that huge meet in October. I have a k5 to use every day.
As stated the most I want to spend is $1500. I can probably do the install myself and then shell out $4-500 for a tune and be right on budget if I go with a used 241 set.
As stated the most I want to spend is $1500. I can probably do the install myself and then shell out $4-500 for a tune and be right on budget if I go with a used 241 set.
08-07-2013, 10:24 AM
#14
As JakeFusion pointed out we do have a sale going on for our Stage 1+ LS6 heads. Please see the link I attached for more info. If you have any further questions feel free to PM us or call us at (313) 561-5500. Thanks! -Chris
https://ls1tech.com/forums/generatio...e-1-heads.html
https://ls1tech.com/forums/generatio...e-1-heads.html
08-07-2013, 12:40 PM
#15
Here are some great choice options for you.
http://www.coloradospeed.com/1998200...d=332&sort=20a
http://www.coloradospeed.com/1998200...d=471&sort=20a
Our first choice would be the TSP PRCs and the specifics would be which would go good with that cam. Good luck.
08-07-2013, 01:49 PM
#18
The difference in the flow of the stage 1 & 2.5 heads seems very minor. I'd probably go with the stage 1. I'm still really considering getting a 241 set and having it ported. I actually think that might be the best route just because it'll be specific for my setup.
08-07-2013, 02:05 PM
#19
I remember when I was at a dyno shop in my area a car with ported 241's and a 230 cam put down 408rwhp. My car with the ported 5.3's / 228 cam did 414rwhp on the same dyno. So not much of a difference at all, nothing you would notice.
