973800CamaroRS

iTrader: (3)

My motor is going back to the machine shop so I am wanting to do heads, want to pickup a little power but mainly for the fact of more deck thickness. I currently have studded 823 heads which have been fine but I am going to go for 17+ lbs of boost now. Looking for a head to let all this air in and shoot it out as best as possible.

Setup is a forged 370ci lq4 short block 8.2-1 getting fed by a kenne bell supercharger. Basically I want the best heads I can get but still be able to run the parts out of my stock ls3 heads. I also am running 1-7/8 headers so idk if that will be a problem. Other issue is does a thicker deck raise the overall mounting and valve cover height because the supercharger is really close to the valve covers.

I have been looking at PRC and MAST not a lot of info on the dart heads. Obviously best value for the money makes sense but at this point its a lot of money for 50hp regardless.

NAVYBLUE210

SpeedTigger used the new Dart as cast pro port LS3 heads with a 15* valve angle With excellent results.
I am having an Engine built with TFS LS3 Heads MAMOFIED with a
12* valve angle.
Two other options for your consideration.

KCS

iTrader: (20)

Normally when they make the head with a thicker deck, it's an internal change. It doesn't make the head taller. However, a lot of times they will raise the valve cover rail, which would move the valve covers up.

NAVYBLUE210

Just noticed it's a 3600, Tony has lots off Caddy CTSV owners
Using his TFS LS3 Heads making BIG POWER with the stock
Blowers, (some ported) @ 10-12 Lbs with medium sized cams.
His heads flow 300 CFM @ .400",350 CFM @ .500", & 380+ @
.600" (enough for 750 FWHP NA). The exhaust flows
74% of the intake from .200"-.600" starting at 83% @ .200"
and progressing to 67% @ .600".
these heads are also less then 260 CC compared to 280+ for
Most of the others. They will swallow boost (show 1/2-2lbs less)
At the same blower speed however more air Less Heat!
He could also address fitment issues if any depending on the
Rest of your set up. 2" LTs would help but still would allow
1000-1200 FWHP depending on the rest of your set up.

973800CamaroRS

iTrader: (3)

Going to call mast on Monday and ask a few more questions but looks like they have the best buy for me at least. Talked to Tony Mamo earlier and while his work outflows everyones by a landslide his price is more than my budget and also he uses trick flow which requires me to buy new valves. Mast everything I can switch over and they have 10% off right now !

427 zeo6

The only heads able to retain stock LS3 hardware if your planning on reusing your valves are the DART LS3 heads....but "stock LS3" hardware isn't what I would be running in a boosted LS build. If you want to go cheap....there are complete CNCd LS9 castings out there for around $1600-1400 a pair....you will need a valve spring kit and I do a "clean up" on the GM "lowest bidder" CNC port job then they are good to go....might not be the greatest but any alternative is probably $2.5-3K when your done buying all the required parts and you don't have titanium intake valves like the LS9 head.

973800CamaroRS

iTrader: (3)

According to mast I can use my stock valvetrain. But I have aftermarket hollow valves, Inconel exhaust. and btr titanium springs.

Tuskyz28

Have you looked into PRC LS3 heads or advanced inductions ? Both tend to less dollars than some of the others that's been already mentioned..

973800CamaroRS

iTrader: (3)

With Mast doing a 10%off and free shipping, allowing me to keep my stock valves and hardware they are quite a bit cheaper.

Rise of the Phoenix

iTrader: (27)

I would look into the MAST offerings, as well as the DART LS3 heads.

973800CamaroRS

iTrader: (3)

So I change my mind more than a woman, After more phone calls and talking with TSP I can get a fully assembled head from them for the price I can get Mast. I would assume a stainless exhaust valve would be ok with boost ? Also going to mill to bump my compression.

Rise of the Phoenix

iTrader: (27)

I would still opt for the MAST heads, but that's just me.