i have a brand new forged 355 with world heads flowing 170 on the intake with stock valve sizes, a mild voodoo cam, a fully built after market tpi set up, full exhaust, 24lbs injectors and 50psi at idle, also full msd. how fast should it be with all these mods o it also has 3'42s and a 5 speed

 

it should be faster than a 305...

 

I would check your timing... if you aren't happy with the performance... depending on the cam you're using your stock timing may not be sufficient for your new setup...

 

You didn't mention any PROM tuning. If you haven't tuned for all the mods, it on't run right.

 

I was going to question about his tuning, but his car is a MAF not a MAP, isn't MAF capable of adjusting the parameter on the fly?

 

Yes & no.

MAF can "tune itself" more than MAP can, but only to an extent. More so than MAP. There is also the "learning curve" as a MAF "reprograms" its tune. The base tables don't change, but what adjustments it makes do. I know I've made changes & seen my mpg (i don't dyno, but mpg is easy to track) cut in half for the first couple of tanks of gas, as the ECM learns.

Go "too far" and the ECM can't adjust & needs a new program.