12/18/2022 0 Comments Cam 350 sbc![]() The thing about dampers/damper-balancers is that the outer inertia ring is what we use to time the motor with a light. If the motor is balanced internally, like a 350, then the unit is called simply a harmonic damper and serves no purpose for balancing the rotating assembly. These units serve 2 purposes to aid in balancing the rotating assembly and to cancel harmonics that were created by the springing back and forth (twisting) of the rod journals in relation to the centerline of the crankshaft. If the unit has an offset hunk of metal on the hub to aid in balancing the rotating assembly, like on a small block 400 or a big block 454, then the unit is called a damper/balancer. Maybe we are all lazy: simply buying new balancers if there is any doubt. However, I have neither seen a defective balancer, nor know anyone whom has had one rebuilt. I seem to recall that a particularly cherished or valuable balancer can actually ne rebuilt with the rubber isolator replaced. I was going to make a sarcastic comment on that.īut I remembered that a balancer can indeed get off balance: if the outer ring spins. ![]() Best of luck to you in your search for your answer. Others can give you guidelines, but Tech gets into the why, and explains how to make it work. Tech's tools to analyze and predict performance are top notch, and he knows how to use them. You likely won't believe it but truth be known you just insulted one of the most knowledgeable guys around on how the various pieces and parts of an engine work together (or fight each other) to make optimum power and efficiency. so now i would think if your a real tech you could tell me what cam to put in their but if you cant i will know the truth ![]() The motor is running 10 to 1 compression now is there anything else you need to know about the motor anything at all well if there is just let me know ok no you know what here you go one more time its a 350 bored 30 over with a air gap intake on it with a holley 750 double pumper with Summit Racing SUM-152123 - Summit Racing® Cast Iron Cylinder Heads puting some eagle rods and bearings and pistons in it and iam going to have everything else balanced such as the Harmonica balancer etc. One more time.YOU MUST KNOW THE STATIC COMPRESSION RATIO OF THE MOTOR IN ORDER TO INTELLIGENTLY CHOOSE A CAM FOR THE MOTOR. The motor rattles like a can full of marbles from detonation and pretty soon, you've broken all the ring lands off the pistons. The intake valve closes too early, creating more cylinder pressure than you can use with pump gas. You have a high compression motor and choose a wimpy cam that you think will be just about right for a daily driver. The intake valve closing is extended to a point where the piston has pushed most of the intake charge back up the intake tract by the time the intake valve closes to begin compression and you are left with low cylinder pressure and a weak motor that won't pull the hat off your head.Ģ. You're looking for that Ricky Racer rump-rump to impress the geeks down at the Sonic. You have a low compression ratio motor and choose a killer cam, long duration and high lift. The first question that any cam tech at any cam grinder you talk with will be "what's the static compression ratio of the motor"?ġ. The cam is not a stand-alone piece, it must be matched to the static compression ratio of the motor in order to close the intake valve at the proper time to make the proper amount of cylinder pressure that will work with the fuel you plan to use. You cannot reach out into thin air and choose a camshaft for a motor.
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