LS6 500-515 HP build, Texas Speed Advise?
05-29-2013, 05:02 PM
#21
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Contact Advanced induction ( or who ever you want ) and ask them. Ls6 heads matched with the correct valve train will give you 500 hp. Torque threw out the power band is a completely different question. (Street ability ) Brian Tooley comes to mind. He sells most if not all the parts you will need to achieve this goal you have and better, faster costomer service than most. Good luck
05-29-2013, 05:04 PM
#22
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Them LS6 heads flow alright stock but nothing amazing. If you won't be using a supercharger, you will want to get the heads cnc ported to get as much perforamnce as you can out of them since you want longevity out of your cam and valvetrain (keep the stock lightweight valves btw) and reach your ~500 hp goal. Porting the heads will mean you'll need less cam to reach your goal, and less cam equals longer valvetrain life. Cnc porting the heads will be well worth it in the long run.
As for people running the 228r TSP cam, what kind of times are you running.
A quick search of the net seems most people are running 12.6 at around around 110. For me that would be going backwards.
Running street tires (275 Goodyear A/S) and and a very poor average of 2.0 60' Im still running 12.6 at 114-115 MPH. I don't want to spend the money and not improve much at all or god forbid go backwards.
500Hp isn't a hard line, but for the work I'm going to do I want a decent improvment. at least about 40hp from where Im at now.
05-29-2013, 05:08 PM
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Them LS6 heads flow alright stock but nothing amazing. If you won't be using a supercharger, you will want to get the heads cnc ported to get as much perforamnce as you can out of them since you want longevity out of your cam and valvetrain (keep the stock lightweight valves btw) and reach your ~500 hp goal. Porting the heads will mean you'll need less cam to reach your goal, and less cam equals longer valvetrain life. Cnc porting the heads will be well worth it in the long run.
05-29-2013, 06:16 PM
#28
TECH Fanatic
Thanks Ill look into that also. From what I read, GM didn't really leave much meat in those heads to port, so thats why I'm a little shy to go that route.
As for people running the 228r TSP cam, what kind of times are you running.
A quick search of the net seems most people are running 12.6 at around around 110. For me that would be going backwards.
Running street tires (275 Goodyear A/S) and and a very poor average of 2.0 60' Im still running 12.6 at 114-115 MPH. I don't want to spend the money and not improve much at all or god forbid go backwards.
500Hp isn't a hard line, but for the work I'm going to do I want a decent improvment. at least about 40hp from where Im at now.
As for people running the 228r TSP cam, what kind of times are you running.
A quick search of the net seems most people are running 12.6 at around around 110. For me that would be going backwards.
Running street tires (275 Goodyear A/S) and and a very poor average of 2.0 60' Im still running 12.6 at 114-115 MPH. I don't want to spend the money and not improve much at all or god forbid go backwards.
500Hp isn't a hard line, but for the work I'm going to do I want a decent improvment. at least about 40hp from where Im at now.
05-29-2013, 06:25 PM
#30
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Have you upgraded the rear end? The stock V rear sucks and hops pretty bad. I'm looking into the Creative Steel ford 8.8 rear. Get that with a different (proper drag) ratio and your 60 time will drop a half a second. GrForce also makes a ford 9 inch if you prefer that route.
I don't have any hopping, just some spin.This rear end I have not more then a support cover. Not yet at least. I also have an 83 Trans Am that has the Spohn adjustable torque arm on it. And that makes a heck of a difference on that car. I drop .4 tenths off just on street tires.
Last edited by Steve83ta; 05-29-2013 at 06:42 PM.
05-29-2013, 07:00 PM
#32
Texas speed has always been my first choice because Arron is very helpful. That Martin guy from Tick def knows his stuff as well. Cant go wrong with either.
Last edited by MikeWS6; 05-29-2013 at 07:05 PM.
05-29-2013, 07:02 PM
#33
TECH Apprentice
http://www.briantooleyracing.com/
http://www.futralmotorsports.com/
Send them an email and see what you get back for a response. It might surprise you. I e contact with both and both of those companies are AWSOME with customer service. Tick seems to frequent Internet forums. Their customer service also seem great, but I don't have tick email address. Contact a few and see what you come up with.
http://www.futralmotorsports.com/
Send them an email and see what you get back for a response. It might surprise you. I e contact with both and both of those companies are AWSOME with customer service. Tick seems to frequent Internet forums. Their customer service also seem great, but I don't have tick email address. Contact a few and see what you come up with.
05-29-2013, 10:33 PM
#36
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I'm not necessarily looking for a "big cam" I know all about lift vs duration, overlap and all that good stuff. Right now I'm trying to see who has what out there and the times, and mainly the MPH they are getting out of them. My main goal is to get one that has good street manners, a decent amount of torque around 2,000 RPM's and then ***** to the wall from 3-6800 RPM That's how my LS6 cam pretty much behaves now. Not much till about 1800 rpm then look out when you hit 3,000 RPM!
Like I said I already have an LS6 so I not jumping from the .492/492 that they had in the stock '98's and the poor flowing head from that first run of the GREAT LS series engines.
I have a 2005 LS6 with the .550/548 cam at I believe 117 LSA with out looking up the specs a .030 of an inch isn't to much of a jump.
I guess the only other question would be for the Z06 guys that did this swap. How did you computer handle it. Was it a big enough of change in order to have the computer re flashed. I'm running a modified LS6 engine tune from PCM for less and the tune has been great.
One reason I throw that out there was when I went from the stock LS1 to the LS6 My Factory computer didn't even blink. It went on its business with out problems hiccups or dreaded engine lights.for a good 6 months till I sent it to PCM's for less for a proper mail order tune.
05-29-2013, 10:34 PM
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05-29-2013, 10:51 PM
#39
I have posted this before but here you go:
LS6 Engine 346 CI
PRC CNC Stage 2.5 LS6 heads
228R cam
FAST 102/92
85MM MAF
CAI
1-7/8" Long Tubes
True 2.5" dual Exhaust
Through a manual trans I put down 455 Rear Wheel Hp
You will need the ECM to be re-programmed (tuned)
LS6 Engine 346 CI
PRC CNC Stage 2.5 LS6 heads
228R cam
FAST 102/92
85MM MAF
CAI
1-7/8" Long Tubes
True 2.5" dual Exhaust
Through a manual trans I put down 455 Rear Wheel Hp
You will need the ECM to be re-programmed (tuned)
05-29-2013, 11:14 PM
#40
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On your stage 2 ls6 heads did you run behive springs to keep the valve train very light, or choose the very heavy dual spring setup?