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Cometic head gasket question #1641353 07/02/14 08:53 PM 07/02/14 08:53 PM
Joined: Apr 2007 Posts: 1,165 Central Ohio, USA Bigbeep OP super stock
Bigbeep OP super stock Joined: Apr 2007 Posts: 1,165 Central Ohio, USA	Does anyone know the actual bore size on a 4.500" , .040" head gasket? The best I can find is cc volume and computing it backwards it comes out exactly 4.500" Seems that may be a little tight with production variances of castings. I figured I would look for a shelf gasket before ordering a custom size. I have an overbore on this block and really can't believe this is all they make as a stocking part. Thanks, Beep Oops, gasket number cgt-c5464-040 8195537-IMG_0885.JPG (55 downloads) Last edited by Bigbeep; 07/02/14 09:01 PM.

Re: Cometic head gasket question [Re: Bigbeep] #1641354 07/02/14 09:03 PM 07/02/14 09:03 PM
Joined: Nov 2010 Posts: 1,397 Carson City, Nevada Biginchmopar pro stock
Biginchmopar pro stock Joined: Nov 2010 Posts: 1,397 Carson City, Nevada	Get a 4.530" gasket, nothing to worrie about.

Re: Cometic head gasket question [Re: Bigbeep] #1641355 07/02/14 09:32 PM 07/02/14 09:32 PM
Joined: Jan 2003 Posts: 19,375 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,375 Las Vegas	Cometic will make it any way you want it. So 4.530 is a safe bet. I have 4.530 and 4.560 here. Both were custom made as we added some steam holes as well.

Re: Cometic head gasket question [Re: Bigbeep] #1641356 07/02/14 09:59 PM 07/02/14 09:59 PM
Joined: Jul 2004 Posts: 1,770 Pa W Wv68charger top fuel
Wv68charger top fuel W Joined: Jul 2004 Posts: 1,770 Pa	Hey John! how's it going? Engine is looking good How big? The 572 is about done.

Re: Cometic head gasket question [Re: Wv68charger] #1641357 07/03/14 12:22 AM 07/03/14 12:22 AM
Joined: Apr 2007 Posts: 1,165 Central Ohio, USA Bigbeep OP super stock
Bigbeep OP super stock Joined: Apr 2007 Posts: 1,165 Central Ohio, USA	Thanks guys. I just figured I would see if I was missing something that wasn't special order. Allen, With the slight bore change it is a 529" now and with the new venolias and head clean up it should be just a touch over 14:1. Should work great with the alcohol set up. Are you guys chomping at the bit to go racing? Is the car done at holts yet? Beep

Re: Cometic head gasket question [Re: Al_Alguire] #1641358 07/03/14 12:45 PM 07/03/14 12:45 PM
Joined: Jan 2003 Posts: 16,928 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,928 NC	Quote: Cometic will make it any way you want it. So 4.530 is a safe bet. I have 4.530 and 4.560 here. Both were custom made as we added some steam holes as well. I agree, and any Cometic dealer can get them for you. Keith Black racing engines stocks MLS gaskets for 4.500 bore blocks and I believe they are 4.560. Give them a call, the last I heard they were $76.50 each.

Re: Cometic head gasket question [Re: Bigbeep] #1641359 07/03/14 08:54 PM 07/03/14 08:54 PM
Joined: Jul 2004 Posts: 1,770 Pa W Wv68charger top fuel
Wv68charger top fuel W Joined: Jul 2004 Posts: 1,770 Pa	Chomping at the bit is an understatement, but we understand that these things take time to be done the right way so it's all good! Sounds and looks like your going to have a stout combo when it's all said and done Looking forward to seeing how it turns out.

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