If you're looking for a unique way to switch from carb to EFI, TSP's 105mm throttle body elbow will help get the job done. Composed of cast aluminum, it features a Holley 4150 style flange and stock 4-bolt pattern, and it comes in satin, black, or polished finishes.
COMPATIBLE WITH
CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED)
4.8 L / 293 in3
5.3 L / 325 in3
5.7 L / 346 in3
6.0 L / 364 in3
6.2 L / 376 in3
NOTES
Fits intake with Holley 4150 carburetor flange
105 mm throttle body opening with stock 4-bolt pattern
ColorSatinFuel System TypeElectronic Fuel InjectionGasket Or Seal IncludedNoGrade TypePerformanceHeight5.120 in.Intake Manifold Flange Style4150 Square BoreMain Port Inside Diameter104 mmManifold Absolute Pressure Sensor Port IncludedYesMaterialAluminumMeth Injection/Boost Reference Port Thread Size(2) 0.125 in. NPTMeth Injection/Boost Reference Ports IncludedYesMounting Hardware IncludedYes in.Mounting Hole Quantity4Nitrous Port IncludedYes mmNitrous Port Thread Size0.0625 in. NPTPort Plugs IncludedYesPort Quantity1QuantitySold individuallyThrottle Body Bore Size104 mmThrottle Cable Bracket IncludedYesVacuum Port Thread Sizes(1) 0.375, (2) 0.250 in. NPTVacuum Ports IncludedPerformance