Car Craft – November 2019

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.