How about those ford cj's at vegas

[Alan Roehrich]

Originally Posted by ROY

The guys complaining about horsepower numbers must be GM guys.Take a 375hp,396,same specs as a 425hp,396,soooooo.Think of the many hp factors for basically the same 350 chevy engine.NHRA has always facrored according to who makes the most noise and who is their biggest sponsor at that time! JMO,got out of "stock" in the 70's when it was getting stupid! ROY.

The 396/375 and the 396/425 were virtually identical, and remained the same for the 396/375 for 4 years after. The 425 rating was a marketing ploy.

If you flow the heads and intakes for those "basically the same" 350 engines, you'll find they are actually a bit different.