Which Head Gasket should I use?
 

Only few miles after the rebuilt of my 302 with 289 heads, the head gasket blew between the head and gasket at cylinder no 6...The 289 head are straight and I can't find what happenned.I use Fel-Pro gaskets from Summit.
Compression ratio is 10:1
What happened???
Need HELP!!!

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84 Capri RS,Stock long block, Melling Cam 512,512 lift-230,230dur @.50, Performer RPM intake, Flowtech long tubes headers, Stock carburetor, 84 T-5, SVO Aluminum Driveshaft, 8.8 with FRP 3.73, Drag radial’s T/A 255 50R16. BEST ET : 13.45 @ 102 MPH Best 60FT 1.89 www.capri302.8m.com

anyone???