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Old 01-05-2010, 06:52 PM
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Lifter valley standpipes?

Hey guys take a look at these.
http://www.summitracing.com/parts/CCA-4932/?image=large
I read an article in a performance SBC book I have writen by David Vizard that says these are a great addition to add to your block on assembly if NOT using a flat tappet cam. I haven't heard or seen these used before but I guess they limit the amount of oil that drips through those 8 lifter valley oiler holes to reduce windage? I plan on using a roller cam for my 383 build so I am considering adding these or even just brass 1/4 double ended pipe from the local hardware store. Is there any significant benefit from these things and what else can you tell me about their purpose?

Thanks,
Keith

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Old 01-05-2010, 07:33 PM
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Unless your on a race track trying to win money and trying to squeeze every last horsepower out of the engine as possible I`d say these are a good idea. If it`s just a street machine I`d say don`t waste your time.
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Old 01-05-2010, 10:55 PM
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Meh, save your money. Not a mod you need to make for any street car and a questionable one for an all out race car at that.
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Old 01-06-2010, 10:22 AM
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Quote:
Originally Posted by sexypizzaman
Hey guys take a look at these.
http://www.summitracing.com/parts/CCA-4932/?image=large
I read an article in a performance SBC book I have writen by David Vizard that says these are a great addition to add to your block on assembly if NOT using a flat tappet cam. I haven't heard or seen these used before but I guess they limit the amount of oil that drips through those 8 lifter valley oiler holes to reduce windage? I plan on using a roller cam for my 383 build so I am considering adding these or even just brass 1/4 double ended pipe from the local hardware store. Is there any significant benefit from these things and what else can you tell me about their purpose?

Thanks,
Keith
Has anybody ever wondered why Small Block Chevy guys worry those little drain holes along the main galley to death. OMG, these little holes are going to cause crank windage that results with insufferable horsepower losses. Has any body looked at the holes over the cam in a BBC, BBF, or a Chrysler? They don't seem to be very concerned about those big to really big holes resulting in enough oil drain-back to reduce power output.

While I think that if you just gotta try out your tap and die set, the stand offs are a better solution than plugs, as they at least provide a path for blow by that isn't sharing the same holes as oil drain-back on the ends of the block. But in the bigger picture I have to wonder if all this gnashing of teeth over those quarter inch holes is worth it to anyone but the purveyors of tap and dies sets, stand off vents, or hole plugs.

Bogie
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Old 01-10-2010, 11:42 AM
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well put bogie, I will forget it then, besides, wouldn't you rather be on the safe side having more getting to the cam than not enough?
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Old 01-10-2010, 12:17 PM
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2X Boggie

I'd just love to see 6 dyno pulls in a row with the motor running at max hp for say 5 minutes on a mule motor without these then 6 more pulls with them all other conditions being the same. This would give a good average and take into account the dyno tolerances and allow the oil to flow. I'd bet there wouldn't be much if any difference.

I wish I'd thought of the items. Could probably finance another project. haha
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