5.3L-STOCK VS TFS
HEADS, COMP CAM &
FAST LSXR INTAKE
It is amazing what kind of
power gains are available from
the proper combination of
components. Using the stock
5.3L short block, we added a
set of TFS Gen X 205 heads, a
Comp 281LRR cam (.617/.624 lift
split, 231/239-degree duration
split at .050 & 113-degree
lsa) and Fast LSXR intake and
throttle body. Run in stock trim
with headers, no accessories
and tuned with a Holley HP
management system, the stock
5.3L produced 353 hp at 5,200
rpm and 384 lb-ft of torque
at 4,300 rpm. After swapping
over the new heads, cam and
intake, the power numbers
jumped to 503 hp at 6,600
rpm and 443 lb-ft of torque at
5,600 rpm. That represented
a gain of over 150 hp peak to
peak and the gains were even
more significant (nearly 200
hp) higher in the rev range. SJ
Air Flow Research
877-892-8844
Airflowresearch.com
ATI
877-298-4343
Atiracing.com
Brian Tooley Racing
888-959-8335
Briantooleyracing.com
Edelbrock
(310) 781-2222
www.edelbrock.com
Comp Cams
(901) 795-2400
www.compcams.com
CP Pistons/Carrillo
Rods
(949) 567-9000
Cp-carillo.com
FAST
(877) 334-8355
www.fuelairspark.com
Gandrud Chevrolet
800-242-2844
parts@gandrud.com
JE Pistons
(714) 898-9763
www.jepistons.com
SCAT
(310) 370-5501
scatenterprises.com
Trick Flow Specialties
(330) 630-1555
www.trickflow.com
POWER PRODUCTION MADE SIMPLE
SOURCES
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SCORE JOURNAL
