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What cam for webers on a 482FE?
48IDA's on a 482 shelby engine, but what cam? Mostly street use with some track. Any help is appreciated! Thanks.
How about this hydraulic cam by crower? crower 16243 which is duration 236/242 @ 50 and 591/598 lift with 112 lobe centers. |
I'm a small block guy but since no one is jumping in here I'll try to get the ball rolling for you. The consensus I recieved when setting up for webers was that Webers do "not" run best on a split duration cam. I am, however, running a split duration cam for the reason that I didn't want to change out a fairly new cam which wasn't "really" radical to begin with. It seems to run pretty well. On my next motor I will switch to a single duration cam with a llittle more lift & a bit more duration.:MECOOL:
I am running a Comp Cams "Nostalgia Plus Hydraulic" I am looking at the Isky FL-368 |
If you contact Comp Cams, they will give you the best direction to go according to your application. My cam was too radical for Weber's. I don't remember the exact numbers, but I do remember it had a 110 degree lobe seperation. The gentleman at Comp Cams recommended a 114 degreee lobe seperation. I wasn't ready to make another change since I just put the radical cam in the engine.
Good luck, Todd |
You want a cam that will make max power with a 112 center line. You know that the carbs are out of air around 62-6400 rpm. motor is way to big for them. A dual pattern will work GREAT with them. Get some one to run some dyno sims on the motor with a couple of different cams. I have talked to 2 of the best that run webers. You power range should be between 2400 and 5800 rpm. You can run a bigger cam than what they may call for. The Webers take out some of the overlap and lift. If setup right you will get 20-40 hp more in the mid range and 18-35 ft of tork than any carb. If you want to talk call me at 732-254-3536 in the evening and I should be home. Rick l
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What we have found with the Webers is that you have to watch the over lap on the camshaft which will affect the signal to the carburetors at the higher rpms. Webers tend to back fire through the carburetors because of the short intake runner length. I have run sevral FE 482 engines with cams in the 242/248 range at .050 with about .600 lift and a 114 lobe seperation with no problem. These engine made power to 5700 to 5800 rpms with no problem. I have found them to make more torwue than a good 4bl but a little less HP at the top end. Good luck with your project. Keith
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