A four barrel carb usually adds about 20 hp.
Contact the cam manufacturer of your choice for a specific recommendation.
Available engines were- 105hp slatnt 6 150hp 318ci V8 240hp 340ci v8 175hp 400ci 2 barrel v8 260hp 400ci 4 barrel v8 280hp 440ci 4 barrel v8
Assuming you have the original 400ci, 4 barrel, 4 speed trans you can look forward to around 10 miles to the gallon. If you can keep your foot out of it...
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400ci is about 6.5L
a 400ci engine
11 miles to the gallon
12 degrees before top dead center.
i think it is 150 to 200 standed at the motor but opened up you get 400 at the motor
yes it will fit, 262-400ci chevy smallblock manifolds are interchangeable.
the basic engine 250-ci V6 is rated at 145hp and the 400ci V8 at 170hp
hey i have a 73 ranchero 400ci and just set the timing at 6 degrees advance.