460 Cams
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Mountain Pass
Joined: Nov 2006
Posts: 224
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460 Cams
Before you post, please know that this question is borderline dumb - once i hear the answer, i know i will have heard it before.
I have been bouning around the idea of a cam swap for my 460. In looking at all my parts books and the web, I have noticed a lot manuf. indicating "the largest cam with stock converter". heres the dumb question, why? Why cant you use a larger cam with the stock converter? What will happen if you do? My, in my head thought, says that a larger cam dosent produce enough vacuum to run a brake booster, which isnt an issue with my application (1964 - manual brks/strg). Please help.
I have been bouning around the idea of a cam swap for my 460. In looking at all my parts books and the web, I have noticed a lot manuf. indicating "the largest cam with stock converter". heres the dumb question, why? Why cant you use a larger cam with the stock converter? What will happen if you do? My, in my head thought, says that a larger cam dosent produce enough vacuum to run a brake booster, which isnt an issue with my application (1964 - manual brks/strg). Please help.
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Joined: Mar 2006
Posts: 1,526
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From: fargo, nd
main reason for a stall converter for a big cam is a big cam doesnt have enough low end torque to move, so you have to put in a higher rpm stall converter for the engine to make enough power to run right- the stock converter will make the engine kill because its dogged too hard
Last edited by darrin1999; Dec 6, 2006 at 08:43 AM.
Posting Guru
Joined: Mar 2006
Posts: 1,526
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From: fargo, nd
well... what else are you doing to the engine? do you just want the cam for the lope? the more lope you have the worse your bottom end power, and if you have stock heads youll never make the power up top because theyre too restrictive, and if you have the stock intake thats pretty restrictive as well... a stock 460 is designed around low rpm torque- it runs out of breath at around 4000 rpm... itll revv to 5000 the power just starts dropping off over about 3500. a big cam raises that power band... but the bigger the cam the more things you have to replace to get the cam to work right, and the less streetable the vehicle is
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