Well The Fun Begins Have Some Build Questions

[DStang99]

Finally pulled the tired 4.6 out of my 99 GT and went out and bought a ford racing aluminator short block thinking about throwing some 03/04 cobra heads on it and for now a factory eaton supercharger. Will the compression of my block be ok for a factory supercharger???

Short block specs M-6009-A46NA


4.6L (281 cubic inch) Cobra rotating assembly with forged steel 8-bolt crank Forged H-beam connecting rods Forged flat top pistons New oil pump Uses M-6010-A46NA block Approximately 10.0:1 compression ratio when used with 50cc heads Fits 1996-2001 Cobra and 2003-2004 Mach I Will fit 1996-2004 Mustang GT with minor modifications Built with all NEW PARTS Ford Racing recommends the M-6004-A464 Camshaft Drive/Timing Kit as well as M-6049-464P and M-6050-464P cylinder heads for 1999-2001 Cobra and 2003-2004 Mach 1 applications Modifications may be necessary in some applications Requires 8-bolt flywheel See our NEW Aluminator Accessory Drive Kit M-8600-A46NA to complete your engine

 

[Bob Hughes]

I believe you have to do a full ecu harness swap to go from 2v to 4v. What you could do with that block is put a kenne bell on it or run a centrifugal sc or go tork teck.