mamead

iTrader: (3)

Category: Accessories
Price: $1000
Part Fits: 93-02 Chevrolet Camaro, 93-02 Pontiac Firebird, Corvette, 04-06 Pontiac GTO, 04+ Cadillac CTS-V
Location (State): MI
Item Condition: Used
Shipping Information: Item Can be Shipped
Engine: LS2/LS3/LS7/L92/LS9, LS1/LS6
LS Engine?: Fits LS Engine

HEADS ARE SOLD. THANK YOU


For sale is a set of used 243 LS6 Heads with Lightweight LS6 sodium filled valves. These are GM World Challenge heads CNC ported by Lingenfelter. I bought them brand new, 0 miles, and they were on my car for 20,000 miles. Also included are my PAC 1218 valve springs, which also have 20,000 miles on them (was running a TSP 228r 114) Full specs on the heads can be found here:

http://paceperformance.com/i-6255752...continued.html

Milled to 60.5 cc chambers for 11.2:1 Compression with stock graphite head gasket. CNC Port work done by Lingenfelter. Flow numbers:

Intake Lift CFM
.200 157
.300 225
.400 269
.450 284
.500 295
.550 302
.570 304
.600 297

Price is $1000. I have pictures of when they were brand new but will have to search more to find them. I am located in Lansing, MI if you would prefer seeing them in person.

In a separate thread I have numerous other parts for sale, including TSP 228R 114 cam, Yella Terra 1.7 rockers, comp cams 7.400 magnum hardened pushrods, ASP 25% underdrive pulley, centerbolt valve covers, plus others. Lots of good stuff: https://ls1tech.com/forums/parts-cla...l#post19138289

mamead

iTrader: (3)

Couple of offers/interest but no takers yet. Bump

CattleAc

iTrader: (7)

So these have been milled .055", according to the link you provided...???

2001 Z06

PM Sent

mamead

iTrader: (3)

I believe that is correct. The chambers themselves were also milled and with that material removed each chamber is 60.5 cc.

mamead

iTrader: (3)

Got your PM. I will be calling you and Mopar800b tomorrow.

HioSSilver

iTrader: (8)

I like these heads. I seen them make over 450whp and still on a ls6 intake and with shitty mac headers. Glws

2001 Z06

ready to buy just waiting to hear back from OP.
I could use these on my engine build.
The only problem are the springs. They wont work with the cam that is going in.
I'll need more than a .570" lift. But I do have a set of double springs to go in thier place.
Joe

HioSSilver

iTrader: (8)

Stay away from double springs on ls. Buy a good beehive or conical.

Why do some of you insist on modding a ls like its from 1970?

2001 Z06

I called TMS this morning. I talked to them about these heads and they said to use double springs. That the Single springs with a .570" lift would deffinatley not be sufficient for my build and the Doubles would be fine. They said they use them all the time.
I'm going on what TMS said.
The specs on the new cam are
235/239,.612/.603 113LSA+2
I ordered my 42lb. Injectors and 160 degree TS and complete gasket kit this morning.
I got the Bosh flow matched 42's from Fuel Injector Conecction.
I'm kind of confussed with the info i'm getting.
People here are saying stay away from the Doubles and others say to go with the doubles.
I don't want to make any mistakes on this engine and I kind of feel like TMS knows what they are talking about, But when others say stay away, it makes me rethink this decision.
Come on guy's give me some positive feed back on this.
Should I use the Doubles I already have or should I just order a set of behives with the right amount of lift for my combination?
Thanks, Joe

high n dry

iTrader: (18)

Depends on how hight u plan on spinning the motor! More than 6500rpm= double spring, if not, beehives will be fine

HioSSilver

iTrader: (8)

I've been spinning to 7k for years even on stock ls6 springs. If anything the beehive and conical you can spin higher due to more control and less weight.

mamead

iTrader: (3)

Heads are sold to Mopar800b and will be shipped tomorrow. Sorry 2001_Z06, he was first in line and paid this afternoon. Thanks everyone.