I have been deciding on an H/C swap for a while now and have decided on the Stage 2.5 5.3L CNC ported heads with the 228R cam. The cam specs are 228/228-.588/.588-and I will get a 112 LSA to give it a nice somewhat choppy idle.

Just wondering if anyone is running this or a similar setup and how the install and tune went.Thanks in advance for the help!

 

Sounds like a great combo, I used to have the cam and I currently have those heads on my car. Both are great pieces. Should make good power.

 

Great! Thanks so much thats what I wanted to hear!

 

iv been looking at that one seems like good power and pretty drivable.. we need some numbers though

either those heads or LS6 ones...

 

I was asking for flow numbers and not getting any responses and they actually put them on the page...here ya go

Intake Flow Information:These are the 5.3 stage 2.5s

.300 208
.400 257
.500 290
.600 312

The stage 1.0 LS6 heads are : .200@149, .300@205, .400@255, .500@287, .600@307

I was interested in the stage 2.5 LS6 heads but they are quite a bit more expensive and dont have a flow chart.

 

i called TSP and asked john about those two sets of heads and he said the shorter intake runner on the 5.3's helps with some extra grunt down low. i also decided on those because of hte compression bump and i want nitrous later on. nitrous loves compression.

i looked at that cam for this setup and eventually deicded to go a little bigger with the torquer 3. i havent seen any numbers with the 228r yet, but seems like a nice little combo

 

I am running that setup with the heads milled to 59cc and a .040 Cometic.

I have some numbers for ya on the 18th after Ed (The HP Factory) works his magic.

Keep in mind I am still running the LS1 intake and no UD pulley.

Other than the flycutting the install was pretty straight forward.

The 228R has a noticable idle, but not as choppy as the Torquer V3 I used to run.

R/

Frat

 

Thanks for the info...I am hoping that I dont have to flycut the pistons since I am not milling the heads and not using a small head gasket, I appreciate it Thanks!

 

I flycut the pistons because I had the Torquer 3. When I was done I started checking the cam out through the lifter bores and thats when i noticed three of the lobes were pitted along the sides. I decided to run something a little less aggressive and went with the 228R.

R/

Frat

 

This is the exact set-up I had decided to go with. I was wanting low end grunt and a smooth but strong powerband. Looks like I made the right choice. Does anyone have a dyno of this set-up?
I'll be running a LS6 intake with ported TB, 1.75" primary/2.5" collectors LTs, ORY to a Magnaflow cat-back. I'm going to build a CAI to draw air from outside the engine bay. What kind of numbers and powerband could I expect?

 

I am also wanting some dyno numbers...I dont have as many mods and for the time being I am going to run them through smog legal shorties until I can afford the LTs but I would like to hear some dyno numbers with basic bolt ons.

 

Bump..... thinking about this cam package in a couple months....

Any dynos?

 

At least 425 rwhp through a LS6 intake

 

This is the setup i want to run and 425 rwhp sounds good to me, is that through a a4 or m6 though??

 

425 is not a sure thing. I am slightly bigger with a FAST 90/90 and didn't quite make it with a catted A4 car

 

I have those heads in an A4 with a custom 232/238 6xx 6xx 111+2 lsa and put down 435rwp 407 rwt. I also have a ported 90/90

when I had a tr224cam with the heads and ported 90/90 I put down 417 rwhp 407rwt
hope this helps you out

 

228/228 is a stellar cam. I'm running afr heads, but you should see great results. Great power under the curve and nice peak power around 6600rpms. My dyno numbers are in my sig, hope it helps a little.