If one is trying for more power, and is on a somewhat tight budget, and isn’t willing to use an aftermarket manifold and headers, along with a little mild porting on the heads…….then imo, “making more power” isn’t really that high of a priority.
If you want it to look stock, and have a noticeable improvement in power over stock(improved seat of the pants feel)……..then add cubes.
Just to reiterate RAMMs initial thoughts on the TQ output…….
The factory rating of 425ft/lbs is a unicorn.
A 100% stock 383, run with factory exhaust, isn’t going to make that.
That being said, I haven’t found the 383 to be an unwilling foundation for respectable power output after receiving the usual hot rod treatments.
This one is pump gas, streetable solid cam, rpm intake, 750 carb, ported factory heads, headers:
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