Soon after finishing the 3500 swap I bolted on my Gen 3 M90 supercharger. Here’s a video shot from the decklid. It has polyurethane mounts everywhere, but still looks a little shaky. The bushing on the torsion mount could be improved. The mounting points are so low and the engine is so tall that I think it makes the mounts look like they aren’t up to task. I don’t want solid mounts so there will always be some movement.
There is still a lot in the works, but here’s the main points for now. More details will be added later.
- Intercooler is phenolic, purchased from SSEILMNOP@gmail.com, $530 just for the intercooler housing and core
- Intercooler pump is Bosch used on other OEM setups like an ’03 Cobra
- Some odds and ends were purchased at Frozenboost.com, like the side mount heat exchanger
- 5/8″ heater core tubing can fit the Bosch pump if you heat up the tubing and force it a little
- Made an idler pulley backet for where the power steering pump used to be
- Idler pulley is Gates part number 38012, it is a smooth pulley but with flanges on the outer edge. I had some issues with keeping the belt centered at first, so this seemed to help.
- Belt is a MasterPro K060858, 86 3/8″
- Intake Air Temp sensor is: Standard Motor Products Part # AX1T , 1999 Chevy K2500 6.5L Diesel, 3/8 NPT, connector is same as Fiero and same electrically. Installed it in the intake after the intercooler.
- 3/8-18 NPT taps are available for order at O’Reilly Auto for a fair price, up until the mid 2000’s this was also the standard coolant temp sensor size for GM
- Injectors are from the 3900 V6. Because they are sized for E85, when using gasoline only, they are capable of supporting about 300hp, good starting point and cheap if found used.
- The 3900 fuel rail is not the same as the 2006 3500, but the injectors are the same dimensions and connector.
- The side mount heat exchanger does not seem to be efficient enough and I’m probably going to swap to a front mount.