novablue454

Hello everyone, I currently have an email in to TSP but I am impatient and bored at work, haha.

I have a 2004 CTS-V LS6 swapped in to my car. Engine is stock aside from the swap headers and a CAI. I am planning on a cam swap and while doing research came across the TSP cam/head packages. The car see's little to no street use, and it is a drift car so it see's extremely hard driving for sustained periods. I think the TSP Torquer V4 is the cam for me, but I am curious if there is any gain to be had from the Stage 2.5 headwork they offer? What kind of gains can be expected from that with an otherwise stock engine?

Thanks!

madmike9396

iTrader: (29)

My hand ported 799s( same as 243) and cam, plus supporting mods picked up over 100 rwhp.

No reason why you couldn't do that with a decent head cam combo imo

black sky

iTrader: (3)

P&P heads are an excellent choice. As Mike stated, there are large gains to be made from a well thought out heads/cam install. My 243's were sent to advanced induction for their 226 cnc program. The new heads netted me about 60+ RWHP. With the aftermarket cam I already had in, my total gains were comparable to Mikes. TSP is a great company and I'm sure they can take care of you. Just a suggestion, keep your options open and do your research. Maybe contact a few different head porters and get their opinion. They have years of experience to share. Good luck.

madmike9396

iTrader: (29)

Don't go huge cam thinking big power either. It will be a dog in the lower RPMs

RPM WS6

iTrader: (3)

Absolutely. The gains are well documented, as stated above.

Mike Morris

iTrader: (55)

That is what I did. Went from 117 cam bolt ons to 122-123 traps after head swap with tune

black sky

iTrader: (3)

Those are great results. Do you mind me asking your cam specs? Looking for a new grind myself.

Not meant to derail the op's thread lol.

novablue454

Awesome, thanks for input. I am still waiting to hear back from TSP to place the order, but I think I've decided on the stage 2.5 heads, TSP .660 dual valvesprings, torquer V4 camshaft, and LS7 lifters and lifter trays. I also am thinking of having them mill .0065 from the head and using a .040 head gasket which (according to other posts on this forum) would get me an 11:1 compression ratio with safe piston/valve clearance.

100whp would be incredible. I am hoping for 400-425whp (I am at 5300'), Is there anything I am overlooking on this? Will the OEM injectors be ok?

black sky

iTrader: (3)

An injector and fuel pump upgrade is a good idea. I went with 36lb flowmatched injectors and the racetronix fuel pump kit. For myself being NA at the moment, 36 do well with a HCI setup. You could also go 42lb for more headroom or if you decide to spray. I'm not totally sure what pump or injectors the ctsv has in it so I'm speaking purely from an f body standpoint

novablue454

The factory injectors are 28.8, I can't find a spec on my pump, its an OEM BMW M3 unit

black sky

iTrader: (3)

Sorry I misunderstood at first. I originally thought you had a ctsv. But it's just an ls6 swap into a bmw. You are correct thinking 28.8 on the injectors. Just to give you a baseline, I was at 440 RWHP with stock 28.8 injectors. Duty cycle was at about 96%. My 36lb injectors gave me the room that i needed and then some. As far as the bmw fuel pump, I would say try your best to find the specs and flow rates of that pump. Especially before you purchase other fuel delivery parts. Outside of that you should be good to go. I'm not sure how detailed your list was but heres a few things to consider.

ARP head bolts or studs
TRI-Union kit if you plan to use stock rockers

SumDumKid

iTrader: (10)

I say go for it. If you have the money to invest in the heads, you will get great flow results out of ported 243/799s and it will go with that Torquer V4 well.

novablue454

I ended up going with the PRC Stage 2.5 as well as machining .007 off the heads and stepping down to a .040 Cometic gasket for an 11:1 CR. I also did the TSP .660 dual valve springs, the TSP trunion retrofit, the TSP Torquer V4 camshaft, LS7 lifters and lifter trays, ARP head studs, and an ARP crankshaft bolt. Can't wait!

Torch Rot Z

What BMW comes with 28.8lb injectors stock? I thought most M3's were 24lb.(e36/e46) Post up some pics of your future monster! Sounds killer.

novablue454

Sorry, the factory LS6 injectors are 28.8.

I drove the car all last season, here are a few pics.

The day we got the engine in




one of the first drives (went to the mountains to test the rear mounted cooling setup)



Some action





and how it sits today after hitting 2 different walls and a season of abuse

Torch Rot Z

Nice! I put off my LSx e30 build to setup my e30 24v boosted project. Might have to get back on track after seeing this.

black sky

iTrader: (3)

Nice list of parts. I'm sure it will come together nicely. The thinner cometic gasket should give you a better quench too. Good luck with the build.

R6cowboy

iTrader: (3)

A good port job on LS heads (any LS head really) is worth it.

2000ls1jeremy

How can I fix my ls6 intake break booster port broke off.

black sky

iTrader: (3)

Check out the maintenance and repairs section.