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Old 09-17-2006, 12:57 AM
Carnut427 Carnut427 is offline
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Join Date: Jun 2003
Cobra Make, Engine: ERA 427 w/496 Side Oiler, roller, dual quads
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Quote:
Originally Posted by My427stang
...the "riser" determination comes from the intake port location, however, the carb location ends up to do the same, so chicken versus egg kind of stuff...
I don't know if that's true or not, first time I've heard it. The book "Ford Performance" by Pat Ganahl says it refers to carb height. I'll let others chime in so we can get the correct answer...if I can learn something, great.
I'm familiar with the article where they put the 429 CJ intake on standard 429 heads, and as I remember the increase was 15 hp and worked well on the dragstrip. IMO the fuel will puddle in the low (mismatch) area and cause distribution fluctuations on the street, such as when stopping, turning, etc. Again, just my opinion, I haven't tried it.
I, like you, prefer medium risers, but here we have a gentleman who evidently wants to run a tripower setup, which is a low riser. 428 Cobra Jets are low risers and run pretty well. If this gentleman wants every hp he can get, he should do as you suggest. If he wants a hard running street engine, low risers are fine.
My 2 cents,

Dan
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