2.5" Mandrel Bent Turbo Down Pipe Kit
Improve the performance and breathing of your Turbo 4.9 Trans Am or Formula with our 2.5" mandrel bent, turbo down pipe.
Features include:
- Mandrel bent construction. No "crushed" bends that restrict flow.
- 16 gauge aluminized steel material.
- Slip fit design for ease of installation and adjusting on the car.
- New exhaust donut gasket at the turbo included.
- New 3 bolt flange at the turbo included.
- Clears all A/C components.
- Redesigned routing for additional oil filter clearance.
- Includes detailed instructions.
(Note: Welding required. Professional installation recommended.)
$250.00 (+ shipping) TTA-007
2.5" Exhaust "Y" Pipe
Continue to improve the performance of you Turbo 4.9's exhaust with our after cat, 2.5", custom "Y" pipe.
This pipe will also fit any 1975-1981 Firebird, Trans Am and Formulas along with 1975-1981 Camaro and Z-28 originally equipped with a catalytic converter.
(Note: This is not a "bolt in" application. Professional installation recommended.)
$175.00 (+ shipping) TTA-012
2.5" Tail Pipe Exhaust Kit
2.5" mandrel bent tail pipes with 2.5" polished stainless steel splitter tips. Includes mounting brackets.
$450 (+ shipping) TTA-044
Downpipe Bolts and Springs
New stainless steel bolts and springs for the turbo down pipe are now available. Although not like original bolts with a hex head, these new bolts give extra clearance when used with the larger down pipe or with a stock down pipe.
$70.00 (free shipping to the lower 48 states) TTA-031
Flange not included.
Downpipe Donut Gasket
Downpipe donut gasket.
This is the gasket that goes between the turbo and the downpipe.
$15.00 (free shipping in the US) TTA-028
Cracked Manifold Repair
It is very common to find the special, passenger side, turbo exhaust manifold of your 4.9 Turbo to have cracks below the center exhaust port bolt heads.
We now offer a brazing service to repair those cracks.
Just send us your cracked manifold to have it brazed. We will also remove any broken bolts or studs along with a coat of high temp paint.
Starting at $175.00 (+ shipping) TTA-029
Price varies depending on severity of cracks
Exhaust Manifold Donut Gaskets
1981 Driver's side exhaust manifold donut gasket.
For 1981, Pontiac changed the 301's drivers side exhaust manifold outlet. They reduced the size of the outlet and made a special donut gasket specifically for the turbo engine. Since a replacement gasket is no longer available, we custom make a gasket to fit this 1 year only application.
$35.00 (free shipping in the US) TTA-033
1980 Driver's side exhaust manifold donut gasket.
$15.00 (free shipping in the US) TTA-035