w1151228

iTrader: (1)

So I have a 2003 LS6 with fast 92 intake, fast injectors, tick performance street heat stage 1 cam, LTH.
I had the stock 243 heads rebuilt with new springs and put back on the motor. I'm interested in getting them worked on Total engine airflow , TSP etc,
I'm also looking at PRC 220 as cast. I know my cam is not super aggressive so will picking the option of working the heads over vs buying aftermarket make much of a difference? I dont want to spend $700 more and end up with 5hp etc. I would also being using a new set of 243 heads and not the ones on the car due to the fact that a shop is doing the work and wont get to it anytime soon. HELP HELP HELP

jetech

My 2 cents...GO with TEA 243 stage 1. Will work nicely with the cam you have and save you some money

Jay Fisher

Be careful on head selection, you need to keep the runners small for airspeed and good bowl work . you can get a good valve job as well as possibly back cutting the valves. I wouldn't chase peak numbers but concentrate on low lift numbers.

Jtm2085

iTrader: (1)

Tea 243's are proven performers. If your heads are true ls6 heads with the lightweight valves then I would have those heads ported. Unless you go with their stage 2 program. I believe they use bigger valves

gagliano7

Get the TFS 220 heads from Brian tooley best bang for the buck in my opinion.

thompson

iTrader: (4)

We have CNC 243 and 799 heads and can port yours as well. It is $850 for the service if we use your castings. Let me know if we can help.

jetech

Either TEA stage1 or Advanced Induction 243's have better #'s than the TFS 220's as cast through out the flow chart. There is some information out there stating that you must run aftermarket rockers with the TFS 220's because the stock rockers scrub and wear the bronze guides. That would be an added cost to the upgrade. Not counting the possible need for the rocker change, I think the TEA and AI heads are $300-$400 less.

99 Black Bird T/A

iTrader: (4)

I'm definitely a hardcore TEA ported LS6 fan. They are well proven, make excellent power keep the velocity high. Talk with TEA they many different LS6 programs and can definitely provide an appropriate match for your set up.

Have a set of TEA LS6 Stage 2.5's that Brian hand finished on my 91 RS - very happy with and no issues. Ran TEA S2 5.3 heads for 15 years & 130,000 + miles. Replaced springs & valve seals once and springs only once. May reuse the heads on another car. TEA's attention to detail and quality are excellent.

gagliano7

You don't need aftermarket rockers with TFS 220's as long as you have powder metal guides installed and Tooley does that for you. I have Advance Induction Heads but if i was to by another set it would be the TFS 220 heads. The only way you can go by flow #'s would be all the heads were flowed on the same machine. The 220 heads always run strong at the track.

Bob570

I don't know a lot about Katech ported heads, but they're offering porting services for $500 right now.

TXZ28LS1

iTrader: (5)

Livernois Motorsports LS6 heads!!!

Fast355

Lloyd Elliot also does great work and has many proven combos around.

JakeFusion

iTrader: (7)

Ported work should pick up 35-40rwhp no matter what.

I have the TEA heads. I'd recommend them or AI. They've both done over 500rwhp in a 346.

BaMaDuDe87

Just wondering, but why did you go with cut down LS3 Valves, instead of the reg Ferrea valves that come with the TEA Stage 2 work?

David@Vengeance

iTrader: (2)

Lots of great info and options in this thread and very hard to beat a ported 243, especially from TEA. Our best offering for another option is the TEA worked Trickflow 220cc As Cast which I listed a link for below. This is an aftermarket casting but not a huge price point like other CNC heads, and include a lot of great benefits to make power with your current cam or a bigger setup down the road. Ours are priced as a pair and loaded with PAC springs, titanium retainers, etc. and available in different combustion chamber sizings if you want to bump compression since you'll have plenty of PTV clearance with your smaller cam.

https://vengeanceracing.net/1997-200...der-heads.html

- David @ Vengeance

cmysix

iTrader: (2)

better check those numbers at the same lift, the trick flows have better numbers at low lift, everybody loves to give you flow #'s at .650 lift

99 Black Bird T/A

iTrader: (4)

FWIW - I've seen TEA S2.5 heads that Tooley hand finished make 5-10 ​​​​whp more on the same dyno as several of the big name aftermarket heads with bigger cams and better intake manifolds etc. Ideally, get TEA to port the Trick Flow heads and have Tooley touch them up. Best of both worlds

JakeFusion

iTrader: (7)

Weight is your enemy. 83g is easier to control than 104g.