1. 

   GS400 68 Active Member

   Does anyone make heads for the 400 buick? I haven't been able to find any

    

   GS400 68, Nov 27, 2003

   #1
2. 

   GS400 68 Active Member

   hey thanks, i wasn't sure if TA Performance heads would work with the 400, since it said 430-450. my engine is already bored .010 over, so the stage 1 heads would work fine? also, are they a big improvement over stock heads?

    

   GS400 68, Nov 27, 2003

   #2

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