Stopsign32v

iTrader: (1)

Well I'm curious who is the go to porter for mild LS3 heads. I was looking at SDPC @ $872 and also PRC @ $750. The flow I've seen is pretty wild across the board and I also know flow isn't everything. So when it comes to H/C/I stock shortblock cars, who is producing the leading performance ported heads?

G Atsma

What is your target HP? If it's 600 or less leave the heads alone. The stock heads support that much power easily. Over that, go for the PRC. They port for flow velocity without removing much material. Very efficient.

Stopsign32v

iTrader: (1)

It will be a custom cam, BLP ported intake/throttle body, and 1 7/8 exhaust. Nothing special but was figuring since the heads will be off anyways maybe I should port them. I cannot mill them due to PTV issues.

99 Black Bird T/A

iTrader: (4)

Land Speed Cylinder Heads, Reher-Morrison, Total Engine Airflow (TEA) have all done excellent quality heads for me for the cost. I would consider one of them.

SLOW SEDAN

iTrader: (13)

If you aren't chasing numbers and times its not worth porting any of that stuff for a regular street car. Usually people porting TB and intakes make things worse, stock TB can support the power easily. I've seen guys spend $500+ on a TB and it picks up a whopping 5hp, not worth it to me. If you really want an intake and your cam makes power up top (which I would guess if PTV is that close) then I would get one with a larger plenum that actually makes realistic gains. Spending the money to port a stocker for 10-15hp isn't worth it to me when something like a FAST, MSD, etc that gains 30+whp is something you can actually feel.

Hodgdon Extreme

Yes!

You won't be picking up lots of power, but it'll still net you some! Whether or not it's worth the price is on you.

Because the LS3 ports are already so big, I think picking a shop that is focused on efficiency/velocity and minimal volume increase is important. Darrin @ Reher Morrison is of course a big champion of this...

tech@WS6store

iTrader: (2)

The TSP port is smaller than some and designed very well and for plus no hidden costs. One port style done on a cnc machine that ONLY does ls3 heads. Thats all it does.
You can send them some pretty gnarly nasty heads and they go through the same cleaning, port, vj, and bowl blend that any other head does for no extra.
Plus pretty quick turn around.

Stopsign32v

iTrader: (1)

I'm new to LS motors to please bear with me. "TSP port" is the Texas Speed LS3 right? https://www.texas-speed.com/p-1388-p...d-porting.aspx

64post

iTrader: (5)

Katech in Michigan is a very good bang for the buck. $499 plus shipping. They offer other services as well like cleaning, valve job, surfacing etc. I sent a set of bare stock 243s there and got them back with real nice port work, turn around was about 3 weeks. Their posted flow numbers for this cathedral port head are comparable to others available but for less $. 308-314 cfm in the .600-.650 lift which is what most porters claim. I put them on a Gen4 347. With a a Titan 4 CamMotion cam.

Tuskyz28

Hit up Bo White

62nalide

iTrader: (2)

I've had great success with Frankenstein Engine Dynamics they are $1,075.00 full CNC porting, 5 angle valve job, hand blended bowls and deburred.

G Atsma

TSP = Texas Speed & Performance. Yes, they do all LS heads. Very reasonable and very good porting with minimal material removal, which means better flow velocity, which in turn means better low end torque.

Stopsign32v

iTrader: (1)

Looking at their website it looks like $1300+ start, which is almost double that Texas Speed is.

64post

iTrader: (5)

You might give Katech a call they do LS3 as well for $499. Or, maybe that ship sailed and they’re back to their old price for this service.

KW Baraka

iTrader: (7)

Guaranteed…..if you have a cammed LS3 and all the bolt-ons and make 440hp to the wheels…..and then.....install a professionally ported set of heads, you'll pick up another 30-50 HP depending on how well the ported heads compliment your setup.

Just because a random setup MIGHT get 600 HP out of stock heads DOES NOT mean that the setup won't improve with ported heads.

Jus' sayin'....

Texas Speed will port your heads for $750....plus the 'to-and-from' shipping costs.

Or....you can consider buying my Texas Speed ported heads....260cc intake port and 68cc combustion chambers.

PM me if interested.

KW

SLOW SEDAN

iTrader: (13)

If your cammed LS3 only makes 440 you have bigger issues. Ive made 490 on stock heads and I tried ported heads and they didnt gain anywhere near 30hp certainly not 50.

Personally I’d never pay to port stock heads again, if spending the money I’d go straight to aftermarket castings.

KW Baraka

iTrader: (7)

If your cam-only, stock-block LS3 had enough cam for 490hp to the wheels, then the fault is yours for sticking ported OEM heads on top.

BTW.....not everyone wants a raggedy-running engine with a 20* overlap cam in their daily driver....no matter what the peak HP might be.

Just sayin...…

KW

tech@WS6store

iTrader: (2)

Katech has so many hidden and extra costs. Its hundreds more from them with their options vs what tsp offers standard. The do the disassemble, clean, cnc port, cnc valve job, mill and hand finish and reassemble for the same price.
Katech definitely doesn't. Youd be on the hook for ALOT more.

SLOW SEDAN

iTrader: (13)

Certainly wasnt 20 overlap and ran pretty damn good. Done it a few times with fairly basic setups, doesn't take a huge cam and pulls to 7000. Even a basic bolton LS3 usually makes 400-420 so if you are doing a cam and only gaining 20-40hp it doesn't make much sense.

64post

iTrader: (5)

The cost conscience OP wanted the least expensive option, so I gave him a lead. He did say porting not complete cylinder rebuild. Yes, Katech charges for everything on top of port work but their Cnc is $499 and their work is acceptable.