Guest jeff1216 Posted November 29, 2003 Share Posted November 29, 2003 All this work that I have done to my 78 280 and what do I get....Terrible dyno results Mod List The car already had a F54 block and flat top pistons I added E88 heads...ported and polished over sized valves heavy springs Arizona intake Stage III cam New Holley 390 Today I added a 2.5 inch exhaust flowmaster and a brand new dizzy and module for a 80 280. I am smoking at high RPM...Blue smoke...I guess I need new rings....I guess I lost alot of HP there. Dyno results 115 HP to the rear wheels 145 foot pounds of torque. I am bummed....all this work and money for such a shitty result. Quote Link to comment Share on other sites More sharing options...
mxs666 Posted November 29, 2003 Share Posted November 29, 2003 I would check compression or take it to another dyno. those numbers are just wrong Quote Link to comment Share on other sites More sharing options...
datsunlover Posted November 29, 2003 Share Posted November 29, 2003 If it only smokes at high RPM's, I would think it is something to do with the valves/seals... if the rings were shot, I'd think it would smoke from idle and up.. not just high revs.. Like jeff said, do a compresion test.. maybe a leakdown test too. Because, those numbers are WAY wrong.. a stock Geo storm has more HP! (my buddy has one.. hes sooo impressed that his Geo has 132 HP! ) Quote Link to comment Share on other sites More sharing options...
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