| S2 Performance 111 Circle Drive Arlington, TX 76010 Phone: 817-860-8830 markshaner@sbcglobal.net |
| L92 / LS3 Heads |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
| |
 |
Check out our new CNC ported LS3 / L92 heads.
These have been designed and developed by one of the very best cylinder head shops in the country. This shop only
works with the top professional race teams around the world. ( NHRA & IHRA Pro Stock - NASCAR - Formula 1 -
as well as some of the top European professional race teams.) We were very fortunate to have the opportunity to
work with such a professional shop.
These have been designed and developed by one of the very best cylinder head shops in the country. This shop only
works with the top professional race teams around the world. ( NHRA & IHRA Pro Stock - NASCAR - Formula 1 -
as well as some of the top European professional race teams.) We were very fortunate to have the opportunity to
work with such a professional shop.
|
| Intake port cut away view |
| Spring pocket |
| Rocker arm stud boss |
Spring pocket
If you look at the area under the spring pocket, you
can see how thin that area would be if one was to
port and smooth that area to match the contour of
the port. (this can cause the head to crack)
Rocker arm stud boss
If you remove the rocker stud boss, you will only have
a few threads to support your rocker arm stud and
springs.
This increase the chance of the head cracking and if
you do not seal the threads, you will get oil pulled into
your intake charge. (not good)
We do not remove these critical areas.
If you look at the area under the spring pocket, you
can see how thin that area would be if one was to
port and smooth that area to match the contour of
the port. (this can cause the head to crack)
Rocker arm stud boss
If you remove the rocker stud boss, you will only have
a few threads to support your rocker arm stud and
springs.
This increase the chance of the head cracking and if
you do not seal the threads, you will get oil pulled into
your intake charge. (not good)
We do not remove these critical areas.
Flowed on a 4.060 bore @ 28"
Intake
Flowed with a plate - no clay was used to smooth entry.
Exhaust
No pipe was used
Intake
Flowed with a plate - no clay was used to smooth entry.
Exhaust
No pipe was used
Dyno and Track testing
05 Corvette (stock) - 35 RWHP gain with just a head swap.
A cam and tuning will be added soon.
06 Corvette - 11.3's with 2.93 gears and a stock converter. ( 3540 lbs. )
The Vette was spinning hard on the 1-2 and 2-3 shifts.
We gained 15 RWHP over a set of stage 3 ported heads at their peak power, then kept pulling to our self
imposed redline of 6500 RPM. The S2 Pro's continued to make more power and TQ where the other heads
gave up.
98 Z/28 -
3640 lbs - 402 stroker - automatic - 3200 stall - Magnaflow cat back
01 Trans Am - 1/8 mile break-in run - 6.80 @ 102 - 1.52 60 ft. Spinning.
This car should run 6.6's on motor when we get it tuned and some slicks on it.
416 stroker - full weight - turbo 350 - 4.10 gears - nitrous cam
01 Trans Am - S2 Pro 241's - 7.01 @ 95.98 - DA 2231 ft.
347 - Automatic - 224 cam - 4.10's - full weight car.
05 Corvette (stock) - 35 RWHP gain with just a head swap.
A cam and tuning will be added soon.
06 Corvette - 11.3's with 2.93 gears and a stock converter. ( 3540 lbs. )
The Vette was spinning hard on the 1-2 and 2-3 shifts.
We gained 15 RWHP over a set of stage 3 ported heads at their peak power, then kept pulling to our self
imposed redline of 6500 RPM. The S2 Pro's continued to make more power and TQ where the other heads
gave up.
98 Z/28 -
3640 lbs - 402 stroker - automatic - 3200 stall - Magnaflow cat back
01 Trans Am - 1/8 mile break-in run - 6.80 @ 102 - 1.52 60 ft. Spinning.
This car should run 6.6's on motor when we get it tuned and some slicks on it.
416 stroker - full weight - turbo 350 - 4.10 gears - nitrous cam
01 Trans Am - S2 Pro 241's - 7.01 @ 95.98 - DA 2231 ft.
347 - Automatic - 224 cam - 4.10's - full weight car.