Jason 98 TA

iTrader: (4)

I'm proud to announce that we just finished up the brand new PRC LS6 cnc program. The program finishes really nice & flows better than any LS6 program I've ever flowed on our bench! These cylinder heads flow well over 300cfm @.600 with stock size valves!
Here's some flow data from the new port:

.300 204
.400 253
.500 286
.600 306

I'll get some graphs printed up for anyone interested. These cylinder heads will be complete with stock 2.00" & 1.55" valves, LS6 yellow springs assembled & decked to your specs. We have a few sets of these heads in stock & ready go!

Upgraded bigger valve heads & upgraded springs are also available!

P/V will remain stock so you have no worries running these heads with really large camshafts

98_LS1

iTrader: (38)

pm sent!!

obrien24

iTrader: (2)

what do they flow on the exhaust? How much for the heads bare? Will these heads work with a MS3 on a stock ls1 shortblock?

pianoprodigy

iTrader: (1)

I ordered a set!

JoeyAnderson

iTrader: (20)

I'm interested also.

Are these factory GM 243s with your port work, or an "LS6 style" head?

Any core charge?

When you say "stock valves", are these Z06-type lightweight? Thanks!

camarokid94

iTrader: (2)

yeah i was plsnning on getting darts and then haveing them ported so if these are close i wannem . about 800 cheaper. i just bought a 233-239 TSP cam. if stock valves then i need bare prices too

NLang

iTrader: (12)

Would you happen to have port volumes on-hand?

longrange4u

iTrader: (2)

Can you do a port/pollish like this on 6.0 heads?

Bigrob339

iTrader: (9)

On your site it says 2.04 1.575 valves for $1199, Can i get these heads bare with that valve size so i can purchase my own valves? If so what price will they be? I am just wanting the heads bare with the valves cut to fit that size of valves.
thx rob

Dan

iTrader: (1)

what kind of HP gains can you see with these? I already have the LS6 Cam & Intake..Thanks

LS2 Pontiac GTO

Any pics of the combustion chamber and ports?

moeZ28

iTrader: (7)

how much for a bare set ????

BLASTER

iTrader: (4)

Ditto on this. Thinking about 6.0L alumiinun and a blower cam for my Blown Silverado.

-Joseph-

iTrader: (12)

I'll get Jason@TSP to update this thread with info/pics as he is more in the "know" about the cylinder head side of TSP. Just a few quick answers to questions I know.... We did a set of 6.0L heads for a turbo setup last week, it did have bigger valves though. With a very conservative valve-job they flowed ~318 @ .600, I would imagine a little more can easily be had with some minor work.

I'm pretty sure the price is the same with/without stock valves/springs. We do have pricing add-on's for custom valve-jobs (to your valves), PRC dual-springs, bigger PRC valves, and also don't forget the heads/cam packages.

fastmatt98

iTrader: (27)

How much for the heads assembled with the prc dual springs? Also what kind of #'s are these heads putting to the wheels?

LS2 Pontiac GTO

So when you order online you have to select a quantity on 2? So the price is $849 for one head?

98_LS1

iTrader: (38)

no, the price is for the set(2 heads)

LS2 Pontiac GTO

Sweet thats a awesome price! Is this a sale price or will they always start at $849.

01ws6m6conv

iTrader: (4)

Damn thats a good price,these are aluminum right? Do these start out as lq9 6.0 liter heads ?Or are these a seperate casting? Or are they ls6 heads to start with. I was going to upgrade my springs and pushrods for about 400-500 dollars,But may as well get the heads for 850. Wow!Yall think these would work good with a procharger? What cc are these heads and what compression ratio would I end up with on a stock 04 ls1 gto motor? I am ready to order.

Jason 98 TA

iTrader: (4)

They are LS6 castings The heads are 64cc & get you 10.5:1 compression

Jason
Texas Speed
www.texas-speed.com
806.866.0734