[Tachyon]

I have 3 4GCS motors sitting in my basement, derelect from when I use to race Sonatas (don't ask...) Anyhoo this IS the best block to use for several reasons, the main one being you dont have to tap new oil lines for the 63 head like you do with the 64... At anyrate, the block you are looking for comes in the 89-91 Sonata, this IS the exact same block as the 63 with the exception of the bore (86.5mm vs 85mm) and the stroke (cant remember the stroke right now) In addition, the 2.4 block has an extra 6mm of deck height. Because of this you will need a timing belt from a 2.4 DOHC galant (they were made in the mid 90's) Anyhoo I am once again excited about blocks that are in my basement cuz of the 2.14 hybrid. I need to find someone who has done a 63 crank in a 64 block so I can pick their brain...