Whipple that’s larger then 2.9 for Cathedral heads.
 

Do they make tuner kits? Anyone know. Looking at options again, and the 2.9 isn’t enough.

They make all sorts of head units and I believe their bottom tub is pretty universal. Cowl clearance and pulley offsets will be your issues with the 3.3, 4.0, or 4.5 units.

We put a 4.0 mock up years ago. :)
Yep hood will need a hole in it.

They have different snouts.

Talk to Mike @ Whipple.

Well not cutting a hole in hood, do any of them fit under the hood that are larger then the 2.9?

The 4.0l won't work so that would leave the 3.3l option. However I have only seen that one used on primarily marine big blocks and I have never seen one with a jack shaft.

Maybe twin turbos (gasp) are in your future?

https://cimg0.ibsrv.net/gimg/www.per...98b0f043a1.jpg

This is an ls with the 4.0l prototype. Notice much of the additional height is to allow for a larger intercooler. This 4.0l never went into production. Instead the production LS 4.0l is a rear inlet on the driver side.



https://cimg2.ibsrv.net/gimg/www.per...a2bacad834.jpg

Are we sure that blower wont fit?? It really doesnt look much taller than the 2.9 I have.

I'd LOVE to see this!!!

I’ve considered the TT or single option, am still considering it. But I really like the instant hit of a PD blower, my TVS is maxed @18psi and just looking at future options. Nothing right now but looking more towards next fall maybe.

Do a big procharger with a loose converter.

Pat would rather stab himself in the eye with a soldering iron than put in a looser converter.