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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