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high compression heads


 
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1948 mm
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PostPosted: Wed Aug 29, 2012 4:18 pm    Post subject: high compression heads Reply to specific post Reply with quote

I was wondering what heads have the highest compression ratio for a 403 gas engine I know about the 10A4213 and the GE30J just wondering if there were any others. Thanks
 
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larry Mi
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PostPosted: Wed Aug 29, 2012 4:21 pm    Post subject: Re: high compression heads Reply to specific post Reply with quote

Might look around here

http://fiorelli.tripod.com/index-5.html
 
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pplowboy
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PostPosted: Thu Aug 30, 2012 8:10 am    Post subject: Re: high compression heads Reply to specific post Reply with quote

I have a set ge30t on mine
 
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MMEd
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PostPosted: Fri Aug 31, 2012 7:07 am    Post subject: Re: high compression heads Reply to specific post Reply with quote

On a more or less stock 403, Head Compression is as follows

GE30T / 10A4207 Highest - maybe about 12:1 ?? - dont have numbers but I would guess too high for anyone to run on gas
GE30P / 10A4206 10.85:1
GE30J / 10A4213 9.9:1
GE30M / GE30Z / 10A4210 9.1:1
 
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pplowboy
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PostPosted: Fri Aug 31, 2012 5:27 pm    Post subject: Re: high compression heads Reply to specific post Reply with quote

This our gtb, in 7500 lb. Class, peeper goin off for 5mph. Class at 200ft in first gear.... ge30t. On it.. runnin on 98 octane.. copression can run lot high .lol u have to higher octane.maybe deisel head gaskets.. lol i now of higher than mine..
 
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pplowboy
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PostPosted: Fri Aug 31, 2012 5:43 pm    Post subject: Re: high compression heads Reply to specific post Reply with quote


Having trouble up loading. Lol.
 
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mightymolinekid
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PostPosted: Fri Aug 31, 2012 5:51 pm    Post subject: Re: high compression heads Reply to specific post Reply with quote

Here's plowboys tractor...gotta watch them Ohio boys I hear they got secret parts yard in Wisconsin lmao

 
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