Mopar 318 'High Performance' vs Chevy 327/250 HP ~ 327/275 HP ~ 350/255 HP

Aaron65 said

I'm always amazed at how small the factory cams were on some of these engines. I run a Comp 252H with 206* @.050 in my 289 Mustang, and it idles stock with 18.5" of vacuum. That 350 had an even smaller cam, yet that engine combo ran great!

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The Chevrolet 1969 350/255 HP {LM-1}

Just a flat-out 'Killer Combination" for NHRA Stock Class back-in-the-day.

1969 Camaro ......................... #3141 lbs. ~ 255 HP = 12.31 Wt/HP
1969 Camaro 'Convertible' ....... #3260 lbs. ~ 255 HP = 12.78 Wt/HP
1969 Nova ............................. #3035 lbs. ~ 255 HP = 11.90 Wt/HP
1969 Chevelle '300' 2-Door ...... #3200 lbs. ~ 255 HP = 12.50 Wt/HP
1969 Biscayne 2-Door Sedan .... #3623 lbs. ~ 255 HP = 14.23 Wt/HP

You can't beat '350' Cubic Inches and a throaty Rochester Quadrajet {730 CFM} with 1.94" Intake Valves.

The #3932441 Cylinder Heads had big Combustion Chambers, but they
had decent sized Ports {Intake = 155 CC} and {Exhaust = 62 CC}.

Of course, it didn't hurt that Chevrolet under-rated the 'LM-1' Horsepower by {25 HP}.