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Old 03-11-2014, 03:07 PM   #26
Stewart Way
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Join Date: Aug 2003
Location: Atlanta
Posts: 475
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Default Re: EFI, Alpha-N vs Speed Density fueling Strategies

Don't know how many of you follow the Engine Masters contest but the 3/14 issue of Pop Hot Rod has an article on the engine Jon Kaase won with this year. After reading it I decided I was overdue for a lunch visit so I went to the shop.
The engine was a Ford 409 4valve mod motor. One cool thing was the set of 16 tube headers, but the interesting part of the FI system was the injector location. I am only going to tell what is in the article since I don't know how much of what I was told is public but the injectors are about 1/2 way up the runner and pointing toward the plenum. There were several locations tried but this was what went to the contest. Jon said it was hard to tune and lower rpm was not smooth. I think the dyno runs were from 3500 to 6500 so you can't give up bottom for top end power since they average the numbers over the range. Made over 800 on VP100 but was tuned for 720 at the contest.
Not something that can be done in a Stocker but in Superstock it could be done.
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