2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP
2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP

2X GT45 BBC T4 TWIN TURBO KIT FOR GM CHEVY BIG BLOCK 427 454 396 502 572 1500HP

$2,467.82
$2,467.82
Shipping calculated at checkout.

GT45 T4 Twin Turbo Kit — Chevy Big Block

A complete twin turbo package for big block Chevy engines, built around (2) GT45 T4 turbochargers. With supporting modifications and a built motor, this setup is capable of significant horsepower gains over stock. Includes a cooling solution for a hot turbocharged engine and an electronic turbo timer to ensure a proper cool-down.

Fits:

  • Chevy big block (BBC) 396, 427, 454, 502, and 572

What's included:

  • (2) GT45 T4 Turbochargers — T4 exhaust inlet flange, 4" inlet/2.5" outlet, 98mm compressor exducer, 107mm compressor air inlet, 88mm turbine inducer, 1.05 A/R, oil-cooled, 1/8 NPT oil inlet
  • (2) Stainless Steel Turbo Manifolds — TIG-welded 321 stainless steel, large 2.25" primaries, extra-thick flanges, gaskets and collector bolts included
  • Front Mount Intercooler — lightweight aluminum, TIG-welded
  • Manual Boost Controller Kit — anodized aluminum, CNC machined, adjustable, with install kit
  • Aluminum Intercooler Piping Kit — aluminum piping, silicone couplers, and stainless worm-gear clamps (may require light modification to fit)
  • (2) Turbo Oiling Kits — oil feed and return lines, fittings, and hardware
  • Battery Relocation Kit — full aluminum construction with relocation cables, straps, and hardware
  • Slimline Cooling Fan — reversible push/pull design
  • Electronic Turbo Timer — LED digital display, pigtail wiring included
  • Fuel Pressure Regulator and Filter Kit — adjustable regulator with pressure gauge and 6AN billet aluminum inline filter
  • Oil Catch Can — polished finish, complete install kit
  • Blow-Off Valve Kit — complete install kit included
  • Heat Wrap — 50ft roll, 1" wide
  • (2) Stainless DIY Downpipe Kits — 2.5" mandrel bent stainless piping, O2 sensor bung pre-installed
  • Coolant Bung — aluminum, fits most OEM 38mm coolant hoses
  • 2x Adapters — stainless steel T4-to-3" adapters, plus 3"-to-4" adapters

Installation requires mechanical experience; some fabrication or modification may be needed for a proper fit. Always verify local emissions regulations before installing forced-induction components on a vehicle used on public roads.