3000 3300 3600 3900 4200 4500 4800 5100 5400 5700 6000
500
400
300
450
350
250
200
150
100
Naturally Aspirated 5.3L With Vortech V3 SCi
Vortech Blower Kit Test
Power and Torque
308
350
464 478
NextGen’s ’67 C10 shop truck (“Farm Truck”)
was used to test the new Vortech blower
kit. On the Turbo Mike Tuning (Charlton,
Massachusetts, 508/641-7789) Mustang
chassis dyno, its mildly worked Vortech 5300
made 308 hp at 5,000 rpm and 350 lb-ft
at 3,000 rpm with the Vortech V3 SCi belt
removed. Then with the drive belt reinstalled
and 8-psi pulley, horsepower jumped to 478
at 5,700 rpm with 464 lb-ft at 5,200 rpm.
The Vortec 5300 is stock, except for an LS
camshaft and LS6 valvesprings (PN 12499224).
877-224-
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gm MOPAR FORD TRUCK
PERFORMANCE SUSPENSION
TECHNOLOGY
➔SOURCES
DeatschWerks; 800/419-6023; DeatschWerks.com
NextGen Performance; 774/745-0405; LSspeedshop.com
Turbo Mike Tuning; 508/641-
Vortech Engineering; 805/247-0226; VortechSuperchargers.com
The plumbing comes in sections with high-
grip elastic sleeves and stainless clamps.
The total system adds 48 pounds to the
engine assembly. A few trucks were fitted
with aluminum block 5.3s (LM4 in ’04-and-
later SSR, L33 in ’05–’07 C and K extended
cab). Though they shed 100 pounds, their
delicate cylinder liners can be a liability
under boost. Stick with iron blocks for
maximum durability and lowest cost.
Right: The wastegate is boost-referenced
and taps into a source of constant
vacuum inside the intake manifold.