H/c Ls1

[1FSTBRD]

Let me know what you guys think of this combo!
CNC Ported Stage 3R LS2/LS6 Cylinder Heads

Livernois heads stage 3
New GM LS2/LS6 243 casting
5 axis CNC machined
Fully assembled
240cc Intake Runner
Intake Flow Rate 332 CFM
Exhaust Flow Rate 230 CFM (265 CFM w/ 1 3/4" Pipe)
Stainless 2.100 Intake Valves
Stainless 1.575 Exhaust Valves
Manley 221426 dual coil valve springs good to ~ .670 lift
Manley 23623 titanium retainers


Thunder Racing Custom Camshaft - T-ReX v.2 - 242/248 - .608/.612 - 110 lsa 3500-6700 RPM Power Band. Violent mid-range & high RPM power. Requires computer tuning, 4000+ converter on autos, 4.30's or greater depending on transmission. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended. Due to the extreme nature of this camshaft, piston to valve clearance must be verified when using modified cylinder heads

[SS4Matt]

well...i would say that those are decent heads, however it has been my experience that oversized valves on 347's it not the best idear. also, that cam is pretty large. you will have to fly cut your pistons i'm pretty sure. also, being that your car is a '98, it'll be (not impossible) but a little bit harder to get to idle good, especially with such an "aggressive" cam.

that's probably not a great combo for a street car just my $0.02

[1FSTBRD]

I barely drive it Im not too worried about street driving.I plan on fly cutting the pistons.For a 1000 for the heads would you say thats a deal to jump on?Just looking for some straight advice thanks Matt

Also if Im getting those heads do you think there is a better cam for my combo

[DETROITMUSCLE]

Like Matt said flycutting is a must with that cam and its not gonna be something fun to drive at all unless you have a 4000+ stall and some steep gears I heard its a dog for sure without them so add in another grand easily to make that combo work as well as some pushrods and gaskets ect.

[CollinsAutomotive]

that livernois head was flowed on a 3.900 bore ????? I don't think so. Also they cut out the swirl inducer also Bad. Bargian priced sure but there CNC works doesn't look like what i have come to expect. the larger valves will require flycutting but that valve is an issue on a 3.900 bore. However i highly doubt those heads flow those numbers on a 3.900 bore.

don't but a cam becuase the LSA is 112 110 114 etc. buy the camshaft that best suite the heads,compression,headers,intake manifold.

I am starting to feel like a broken record but i geuss thats the curse.

Let me know what you guys think of this combo!
CNC Ported Stage 3R LS2/LS6 Cylinder Heads

Livernois heads stage 3
New GM LS2/LS6 243 casting
5 axis CNC machined
Fully assembled
240cc Intake Runner
Intake Flow Rate 332 CFM
Exhaust Flow Rate 230 CFM (265 CFM w/ 1 3/4" Pipe)
Stainless 2.100 Intake Valves
Stainless 1.575 Exhaust Valves
Manley 221426 dual coil valve springs good to ~ .670 lift
Manley 23623 titanium retainers


Thunder Racing Custom Camshaft - T-ReX v.2 - 242/248 - .608/.612 - 110 lsa 3500-6700 RPM Power Band. Violent mid-range & high RPM power. Requires computer tuning, 4000+ converter on autos, 4.30's or greater depending on transmission. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended. Due to the extreme nature of this camshaft, piston to valve clearance must be verified when using modified cylinder heads