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will i have clearance?
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Posted: 02/02/10
06:50 PM
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i currently have a 95 mustang and i bought a ford racing b 303 cam, stiffer valve springs, and frpp lifters. i was told i have gt40 heads and i have a cobra intake. if i put 1.6 frpp roller rockers in it am i gonna have piston to valve clearance issues with this setup or valve cover clearance issues???
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Posted: 02/03/10
07:29 AM
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If the heads have 3 or 4 bars on the front facing side, they're GT40 heads of some sort. There's another thread on here about that subject. You can check piston to valve clearance by putting silly putty on the piston, torque the heads down with the rest of the valvetrain installed as well, and rotate the crank, rods, and pistons. Take the heads off, and check the imprint on the silly putty. That's the easiest way to check piston-to-valve clearance. As far as valve cover clearance issues go, you'll have to do the same thing. You won't know until you put them on. Cobra engines already have roller rockers on the heads so theoretically, if you have Cobra valve covers, there shouldn't be an issue, but you will need to check to make sure. Hope all this helps.
Michael Johnson
Associate Editor
5.0 Mustang and Super Fords
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