Originally Posted by
Fast355
A stock 80s 305 with that cam, a pair of long tube headers, good exhaust and good tuning makes around 240-260 hp at the flywheel, dyno'd 191 RWHP/268 RWTQ on a Mustang dyno. The stock 305 injectors will not support that amount of HP without drastically raising the pressure. The older smog heads also do not burn fuel as efficiently as the TBI heads, which further increases the fuel requirement.
The reason I suggested the 350 injectors is because they are closer to the fuel requirement of the engine in question.
I was running this engine setup when RBob introduced the EBL Classic. His out of the box LG4 calibration for his Elcamino ran my "rv" cammed 312 very well with only slight tweaks.
My prior calibration was the 92 299 ecm. AWLD and 350 injectors were far more driveable than the stock 305 calibration. The 350 calibration did not have enough TPS AE either and wanted to lean pop on quick throttle transitions. With the 305 injectors it ran so lean that the headers would glow.
This exact setup is actually what pushed me into TBI tuning to start with.
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