Can i use 87mm gaskets for a standard bore?

[jchevy]

I had gaskets for my standard bore high compression rebuild shipped to me next day air for my assembly tomorrow. XR's Only sent me the wrong gaskets. They are for a 87mm big bore kit. Can i use these gaskets anyway with the 85 mm piston, i want to get this done tomorrow. Or do i have to wait for them to ship the correct gaskets.

doubt it but not 100% sure

[YZROOSTINYA]

what kind are they, i might buy them from you. for a 416 right? what thickness

[jchevy]

It is a cometic top end kit. Its either for a 416 or a 426, which ever has an 87mm bore. If i cant find another one in town then im going to exchange this one.

[UglyMotha™]

87 is a 416 and a 88 is a 426