521 sr-71 headed motor

the_partman said:

so i built a 521 with e sr-71 motor is a bust . thought it would of had a bit more power. 6.8 rod 4.3 stroke 4.39 bore 38cc dished piston too run on pump gas chaved 30 off the heads cam 272 int 280ex 731int 727 exh 109 lsa have the cj-v intake with a 1050 dominator 27 to 28 timing best 60 ft is a 1.6 with 4.88 final gear a c6 trans not sure if my converter is missmacthed now . any ideas thanks

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