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#1
11-05-2025, 12:36 AM
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Large plenum conversion for EFI
I'm curious what the board thinks of these large plenum conversions for EFI applications. Once again I'm running into hood clearance issues when attempting to convert from my pin-on fiberglass TA hood to a bolt-on steel TA hood. Not to get off topic, but my current hood has the shaker moved 2" forward. I didn't realize this until starting the steel hood conversion. ps. having highport heads on a 70 TA is a major pain in the ass
 I'd like to hear opinions on the effect of opening up the plenum of a Northwind/Victor like the pictures below. I'm concerned with the runner length being too short, although short runners with a large long plenum seems to be the direction most EFI intakes are going these days. I'm liking the idea of more plenum area and the ability to get a custom intake elbow lower than my hoodline. What do the airflow folks in here think about the whole idea?  417 Motorsports does the conversions. https://417motorsports.net/collectio...num-conversion     
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind, E85 Holley Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
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