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PostPosted: Thu Feb 15, 2018 10:28 am 
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Heres the last oc small valve motor i did. Hyd cam 9.3 compression


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PostPosted: Thu Feb 15, 2018 10:30 am 
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we stopped pull 6000 hp still climbing.


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PostPosted: Thu Feb 15, 2018 10:34 am 
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A/F ratio rich enough to oink at you.

I bet that engine would have liked about 42 degrees total timing.

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PostPosted: Thu Feb 15, 2018 10:38 am 
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Here is. Flow of small valve oc head exactly same as yours ! Minor bowl work done to these and from my research flow as good or better than the big valve head. The small valve head in stock form outflows a 4v big valve on bench by significant amount. These heads here flowed 301@.600 before we touched them.
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PostPosted: Thu Feb 15, 2018 10:41 am 
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blykins wrote:
A/F ratio rich enough to oink at you.

I bet that engine would have liked about 42 degrees total timing.

A/f ratio was out do to header leaks. We brought timing up 2* at a time till it dropped off 36* was where it was happy.Not our first dyno session,and my dyno guy is very knowledgeable


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PostPosted: Thu Feb 15, 2018 10:45 am 
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.006" lash?

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PostPosted: Thu Feb 15, 2018 10:48 am 
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Steve.k wrote:
blykins wrote:
A/F ratio rich enough to oink at you.

I bet that engine would have liked about 42 degrees total timing.

A/f ratio was out do to header leaks. We brought timing up 2* at a time till it dropped off 36* was where it was happy.Not our first dyno session,and my dyno guy is very knowledgeable


How did you check it then? Read plugs?

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PostPosted: Thu Feb 15, 2018 10:50 am 
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Steve.k wrote:
blykins wrote:
A/F ratio rich enough to oink at you.

I bet that engine would have liked about 42 degrees total timing.

A/f ratio was out do to header leaks. We brought timing up 2* at a time till it dropped off 36* was where it was happy.Not our first dyno session,and my dyno guy is very knowledgeable


The OC Super Stock stuff (actually, most non-quench Ford stuff, Ford FE MR, TP, etc.) always liked a ton of timing, even with higher compression. I'm wondering if it stopped at 36 because the A/F ratios were off?

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PostPosted: Thu Feb 15, 2018 10:52 am 
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Steve.k wrote:
blykins wrote:
A/F ratio rich enough to oink at you.

I bet that engine would have liked about 42 degrees total timing.

A/f ratio was out do to header leaks. We brought timing up 2* at a time till it dropped off 36* was where it was happy.Not our first dyno session,and my dyno guy is very knowledgeable


Yes, I read the post of the above build. The build absolutely mimics my build with compression, D3ZE heads, and use of hydraulic camshaft. I also read the lifters were bad and changed out for solids. The build said they used an XE274 Comp hydraulic.


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PostPosted: Thu Feb 15, 2018 10:55 am 
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Ah......

The .006" lash makes sense now. Solid lifter on a hydraulic cam.

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