Cable Bracket for 65mm LX5 TB

(Pics coming soon) Our revised cable bracket bolts to the front of the throttle body, making it compatible with both the 3100/3400 upper and 3500 LX9 upper intake.  

Ported 3400 V6 Manifold Set

An excellent upgrade on its own, and a perfect match to our performance 3400 cylinder heads.  Both manifolds are thoroughly cleaned and fully ported, netting the most airflow while retaining the runner taper and improving the wall texture.  A 65mm throttle body upgrade is recommended, but not allo…

2000+ 3100 / 3400 Intake Gasket Set

Full intake gasket set with upper/lower, EGR, Throttle Body, Injector O rings, valve cover gaskets, valve cover bolt seals, lower intake manifold bolts, etc.  

3100/3400 Upper Intake Gaskets

Large Port upper gaskets with Throttle Body and EGR gasket

EGR Block Off Plate

1/8" Aluminum plate to block off the EGR port on the intake manifold.  For off road use only.  M22x1.75 plug for the exhaust manifold is not available at this time.  

3400 Header Flanges

3/8" Thick Mild Steel Header Flanges Designed for the aluminum head 2.8, 3.1, 3100, 3400, and 3500 LX9 engines.  1 5/8" round ports with no overlap into the ports with the primary tubes installed.  Easy access to the spark plugs without removing the headers.

LX5 Throttle Body Install Kit

Kit to install a 65mm LX5 Throttle Body onto a 3100, 3400, or 3500 60V6 engine. * No throttle body is included * WOT-Tech Throttle body adapter WOT-Tech Throttle cable bracket  LX5 throttle body gasket 3400 style throttle body gasket modified for a 65mm opening (for 3100 and 3400 en…

LX5 65mm Throttle Body

Upgrade to a 65mm throttle body for better throttle response and more power.  We clean, blast, and inspect every throttle body we sell.  Can be used on the 3100, 3400, and 3500 upper intake with our WOT-Tech LX5 TB Adapter.  We also offer a package that includes a modified cable bracket for eithe…

LX5 65mm Throttle Body Adapter

We have designed an adapter to use the 65mm TB found on the Oldsmobile 3.5 DOHC. Bolting it to the manifold (3100, 3400 or 3500, both bolt patterns and sets of bolts are included) is no problem, but attaching the throttle cable bracket will be a DIY project.  You will need both gaskets for the 3400…

Ported 3100 Upper Intake (2000+)

We offer 2 stages of porting, each with its own level of modification.  All of our manifolds are cleaned, baked, blasted, and inspected for cracks and warpage.  Stage 1 uses the stock large port 3100/3400 intake gaskets as a template.  Stage 2 uses the larger 3500 intake gasket, or the stock 3400…

Ported 3400 Upper Intake

We offer 2 stages of porting, each with its own level of modification.  All of our manifolds are cleaned, baked, blasted, and inspected for cracks and warpage.  Stage 1 uses the stock large port 3100/3400 intake gaskets as a template.  Stage 2 uses the larger 3500 intake gasket, or the stock 3400…

Ported 3100/3400 Lower Intake

We offer 2 stages of porting, each with its own level of modification.  All of our manifolds are cleaned, baked, blasted, and inspected for cracks and warpage.  Stage 1 uses the stock large port 3100/3400 intake gaskets as a template.  Stage 2 uses the larger 3500 upper intake gasket, or the stoc…