Products to give your Turbo 4.9 more performance

Manual Boost Controller

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Our manual boost controller delays the pneumatic actuation of the waste gate until maximum boost pressure is reached.  This allows the turbo to “spool up” at a quicker rate.  

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2.5" Turbo Down Pipe Kit

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Improve the performance and breathing of your Turbo 4.9 Trans Am or Formula with our 2.5" mandrel bent, turbo down pipe. 

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Water-Alcohol Injection

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Water injection has been around since WWII.  It is a great way to suppress detonation in the internal combustion engine.  

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Turbo Air Induction

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The key to improving the performance of the Turbo 4.9 is to have as cool of air coming in as possible.  Since the turbo cars came equipped with a hood scoop, why not make it functional? 

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2.5" Exhaust "Y" Pipe

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Continue to improve the performance of you Turbo 4.9's exhaust with our after cat, 2.5", mandrel bent "Y" pipe.


Currently out of stock.  Will be available 8/15/19

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Performance Head Gasket

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TTA Performance offers these modified Fel Pro head gaskets. 

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Nitrous Oxide System

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This nitrous system is used as an anti-turbo lag device. 

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Rebuilt Upgraded Turbo

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TTA Performance has teamed up with G-Pop Shop to offer rebuilt, upgraded turbos for the 1980-81 Turbo 4.9s.  Our goal is to have a rebuilt turbo on the shelf and ready to ship to you. 

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4-Speed Flywheel

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If you are looking to convert your Turbo 4.9 or non-turbo 301 to a manual transmission, we now offer a billet steel flywheel.  You no longer have to source a used 1979 301 4-speed flywheel for your conversion.

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Turbo Shorty Header System

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Shorty header system for the Turbo 4.9 is now available.  This is the system that was tested on the dyno and provided a 25 lb/ft increase in torque over the stock manifold system. 

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180° Thermostat

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The correct thermostat for your 4.9 Turbo.

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EGR Block Off Plate

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EGR block off plate machined from 3/8" thick aluminum. 

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Aluminum Water Pump

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New aluminum water pump with correct cast iron impeller.

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Boost Gauge Conversion

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Send us your tachometer to have the clock converted to a vacuum/boost gauge. 

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1.65 Ratio Rocker Arms

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Comp Cams Roller Rocker arm conversion kit (1.65 or 1.5 ratio) .

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Cam and Lifter Sets

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 Comp Cam 252H cam and lifter set available. 

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Fuel Injection Conversion

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FiTech Fuel Injection conversion with optional timing control. 

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Cylinder Head Conversion Head Gaskets

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Custom designed copper head gasket to install conventional Pontiac cylinder heads on a 301 block. 

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2.5" Tail Pipe Exhaust Kit

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2.5" mandrel bent tail pipes with 2.5" polished stainless steel splitter tips. Includes mounting brackets.

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