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PostPosted: Wed Oct 16, 2013 5:27 pm    Post subject: castings Reply to specific post Reply with quote

I finally found a UB.The engine is stuck,before I did a teardown,I researched the casting numbers.
The blocks are 10A10248. These are 336 or 504 diesel blocks?? The heads are GE30Z. Are the diesel blocks interchangeable with the gas blocks?At first I thought I had G blocks as there is a spacer under the blocks.Anybody know what I have here compression wise or cubic inch?
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PostPosted: Thu Oct 17, 2013 8:27 am    Post subject: Re: castings Reply to specific post Reply with quote

Not sure about bore, but, u can use diesel jugs on gas. A z head is same as a4210. The spacer is common when putting 336 parts on 283 crankcase.
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Joined: 10 Feb 2011
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PostPosted: Fri Oct 18, 2013 9:16 am    Post subject: Re: castings Reply to specific post Reply with quote

head imformation --30z--head hght-4-17/32--head depth-1-9/32-----head volume -11.3----chamber volume-13.2---comp ratio-6.34-1-----comp pressure-130-150--------hope this helps --
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