i jus got done building my motor its a 90 lx A1 block with a 95 lx b1 or b2 head (cant remember) and when u give it gas it slowly revs and doesnt pick up till bout 3000 rpms and thens opens up. cant even get it to drive up a slight slope in the yard because of no power. there are no codes showing and now completely stumped on wat else to do. could there be another vaccuum im overlooking? need help anything would help thanks

 

No strange noises? Picks right up after 3000 rpms? What else did you do to the motor? Any recent tune up stuff done (plugs wires cap rotor air filter etc)? Carb or FI?