.100 dome with vortec heads? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-23-2004, 04:56 PM
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.100 dome with vortec heads?

Hello,
I was wondering if .100 dome pistons will work well with vortec heads. I have heard that you cannot use dome pistons with vortec heads, is this true? I want to up my compression to 12:1 instead of the 11:1 with the flat top pistons, but if I cannot use .100 dome pistons with vortec heads then I will keep the flat tops!

Thanks for any info!!!!

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Old 06-23-2004, 05:06 PM
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The Vortec chamber has a protrusion at the spark plug that will not allow the use of commonly available domed pistons. A solid dome piston would work if it was milled for clearance but what would be the point? Too much compression for a street type head!!
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Old 06-23-2004, 05:58 PM
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Bob is correct on this,
i just had this problem with a set that the customer did not tell me he had dome pistons in the engine.I was lucky in the fact that they where and old trw set and i could cut them with out worrying about going thur the piston or making it to thin.







mike
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Old 06-24-2004, 12:33 AM
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KB shows their KB358 piston (.100" dome) to be designed for use with Vortec heads.

http://kb-silvolite.com/performance....etails&P_id=53
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Old 06-24-2004, 01:23 AM
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Hello,
Do they have sbc 400 .100 dome pistons for vortec heads, I was not sure if they were for the 400 too.

Thanks
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Old 06-24-2004, 04:42 AM
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My 2 cents on the KB pistons the biggist piece of crap on the market. Melt them all down and make somthing usefull out of them like wheels.







mike
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Old 06-24-2004, 07:11 AM
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Quote:
Originally posted by Rogers Performance
My 2 cents on the KB pistons the biggist piece of crap on the market. Melt them all down and make somthing usefull out of them like wheels.







mike
AMEN, Bruh--tha!!

tom
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Old 06-24-2004, 06:45 PM
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Hello,
What makes them worthless?

thanks
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Old 06-24-2004, 07:47 PM
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Hello,
I am wondering what makes them worthless because I was looking at a 11.4 compression flat top 400 pistons KB silverlite, but if there crap then I will not get them!

Thanks
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Old 06-25-2004, 05:27 AM
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pistons

What i have found with the kb hypereutectic pistons is that they will not take "ANY DETONATION" They are very un forgiving in this area. In your application where you want to go to a 12.1 motor i would say to stay away from them just for this reason. Having said that,, I have built like 15 to 20 motors with these pistons and only one motor had a failure, and it was strictly a detonation issue. None of these motors were over 10.5 to one static compression. Two of them have been sprayed with a 150 shot, and those 2 have not had any problems, but the owners were very careful with the tune up........

One big thing with these pistons is the top ring gap. If you miss this during assembly the pistons WILL fail.

So they do have there problems,, and once again with what you want to do i would stay away from them. For a little more money you can get a set of probe forged pistons.

Keith
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