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Print in friendly format Send this term to a friend  RPO
Regular Production Order. These are the codes that GM uses to identify options.

For example, LT1 is the RPO for the engine used from 1992-1996.
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Re: Engine Dyno Predictions:

Subject: Re: Engine Dyno Predictions:
by BeachBum on 2008/12/28 23:28:40

Quote:

jsup wrote:

So again. It's nice to see a comparison, you came up 25HP up using a CNC'd head vs. an as cast, with bigger valves, I thoguht it would be closer to 40, but ok, you won bragging rights on this one. Congrats.


Or we could look at it as an un-fair comparison because one of the cylinder heads was "Wet Flowed" and the other was not couldn't we ? Am I correct in saying you have been stating that "Wet Flow Testing" was the thing that makes power and that dry flow was old inferior technology ? Dart very, very clearly makes it known on their website that the Pro-1 Platinum 200 cc head in question receives the wetflow treatment in full..... and yet, the AFR received none !!..... thats really fair !!

If you answer no other question ever again, please answer to me, is Wet Flow treatment a performance advantage or is it marketing hype ?

But, here is a review of the two cylinder heads in question on this test:

AFR 195 street port cylinder head: 195 cc runner, 65 cc chamber, receives light cnc port work. Published Price: $ 1485

Dart Pro-1 Platinum 200 cylinder head: 200 cc runner, 65 cc chamber, receives CNC bowl blending, recieves the full wetflow treatment. Published Price $ 1460.60


With the exception of the Darts unfairly receiving the wetflow treatment, it looks pretty fair to me.

But, don't let me interrupt your argument with common sense..... carry on !
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