Thank you very much.Sorry for the " I think". I havent tear it down yet but when I do I will get all the measurement right.
Questions are just so I can do a little math and hopefully learn something.
My new pistons in a box are 2.7cc.Will go in this winter.
Just a little curious how much is safe to cut the heads,if I have to.
I think your right about the jetting.It feels stronger now and its real cold outside.
Thanks again for all the help and tips you give me./Gresse

______________________________________
My combo:289\"030 dished piston ported-66 heads with 1.94-1.60valves.
Comp292H 244-244-534-534 110 lobesep.
Portmatched Vic jr Holley 650dp with 70F-79R jets and 3.5pv.Holley mech 110gph pump.3/8\"line.
1 1/2\" longtube headers through full 3\" exhaust.
Timing int16* total36* in at 2000rpm Mallory mbi dist and Mallory coil.
Plugs are Motorcraft BSF42C gap set .040\"
C4 trans 10\"TCI superstreet fighter.
8\" 4.11 rear with tractionlok.