73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 76 k10 on March 21, 2008, 09:50:03 pm
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I put a new cam in my 76 truck and it sounds good at about 750 rpms but the problem is that when its in park it runs at about 1100 to 1000 rpms but when i put it in drive it curps the tires and and then its fine........o ya and my truck bogs down intell 2000 rpm....... i already blow my ujoint out cuz of it
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sounds like you need to set your timing and adjust your base carb settings.
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well as far as idleing that high why not turn down your idle speec screw on the carb assuming it's not fuel injection. Even if it is I think you can adjust idle speed.
As far as sucking below 2000 rpm does it actually bog or just doesn't have much torque or get up n go?
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but on my 78 pontiac trans am when i built the motor for it i put a stall in it and it helped with my starting power
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Higher stall speed is going to make it move at higher RPMS also. Maybe with your Pontiac you had a bad torque converter stator.
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What kind of intake do you have?
I had similar things go wrong on my truck at one time. I had a 670 Holley and a Torker 2 high rise single plane intake. It was a dog until it got into the 1800-2000 range, then took off like somebody kicked it.
Switched to a dual plane edelbrock performer low rise and thunder series carb and now she will boogie down low in the rpm range. All this is with a Comp 270 Magnum cam.
Could very well be a timing issue as stated above also, sounds like it since you say it chirps the tires when kicking into drive