90mm Magnusson Billet J-tube Conversion Kit
    Add boost pressure and reduce intake temperatures to your Magnusson Supercharged pickup or SUV! We now offer a billet 90mm throttle body conversion kit for 2002-2005 Chevy and GMC trucks and SUV's that are using the Magnusson supercharger systems. The kit replaces the factory installed 75mm throttle body with the later LS2 style 90mm throttle blade setup. The conversion reportedly achieves a 20-25 rwhp increase as a bolt on install. Further computer tuning can achieve a total of 45+ rwhp increase. Our custom built kit comes with all the necessary parts to install on your truck or SUV. We furnish factory GM parts where possible and a special adapter harness to make the conversion plug and play. Our J-tube conversions are sold with the factory Magnusson powder coating for a factory looking finish. The billet adapter is built extra thick to allow for the addition of injector tubes or nozzles. We will TIG weld the adapters inside and out and then blend smooth the inside surfaces to help maintain the higher flow rates allowed by the 90mm throttle body.
      We offer the J-tube conversions for sale on an exchanged basis or we can machine your supplied J-tube core.


The total kit price is $824.51 and includes the following parts:







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Copyright West Coast Cylinder Heads 18405 Hart Street Reseda, Ca. 91335 818-705-5454
Installed
Installed
The core charge for exchange J-tubes $260.00 and is fully refunded upon receipt of customers returned cores.