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camshafts |
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tsanchez
AMC Addicted Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4303 |
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Posted: Jul/09/2007 at 5:05am |
I posted this on another forum but figured I would here as well.
This past fathers day I cleaned up the old Javelin and replaced the fuel pump, acc pumps etc.. and got it running again because I got the itch to cruise around again. Fired it up and I forgot how great it sounded and ran, when I built this engine back in the mid 80s I was limited to the cams available other than just "street" stuff. There was old pro stock stuff listed but unavailable and I wanted a flat tappet anyway so I wrote down a profile that I wanted and had Lunati grind a custom for me. It worked great and has been in it ever since, but now there are all kinds of new stuff around and was wondering what people are using and what works. Here are my old cam specs. I use 1.73 rockers on the intake and 1.6 on the exhaust so I gave the intake lift at valve with the 1.6 and the 1.73. Intake Exhaust LSA 110 Lift @ valve .614/.663 .627 Advertised duration 302 312 Duration @ .050 268 278 lash .024 .024 The engine is a 401 30 over with custom venolia pistons @ 13.5-1 compression and a UR-18 with two 750 dominators. Lets see what cams you all have and how do they work. Edited by Steve_P - Jul/09/2007 at 5:22am |
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Ask any one engine builder/racer the cam profile they use and they will give you a harsh reply. Camshafts are almost the last great secret to building a great AMC V8. I will tell you this I wont pick a camshaft untill I know what my heads flow and where they flow best for the application. Like any porting professional will tell you the cam is picked and then can be modified by the rocker ratio to meet a a intake vs exhaust ratio efficiency.
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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