Author Topic: Engine Builder Magazine 431FE 500+HP comparo Fuel Inj vs Carb  (Read 3055 times)

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Qikbbstang

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Admired the job the tricked Holley 650 HP did against a 1200cfm rated throttle body.  This is a link to PDF, If the PDF does not open to FE article, page flip to page 32. BTW article was cover story:



http://edition.pagesuite-professional.co.uk//launch.aspx?pbid=275003ac-f1c0-463f-89d5-28e900ab7c93

« Last Edit: March 16, 2015, 12:42:54 PM by Qikbbstang »

lovehamr

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Re: Engine Builder Magazine 431FE 500+HP comparo Fuel Inj vs Carb
« Reply #1 on: March 16, 2015, 12:57:37 PM »
Interesting.

LuxurySportCoupe

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Re: Engine Builder Magazine 431FE 500+HP comparo Fuel Inj vs Carb
« Reply #2 on: March 16, 2015, 05:21:29 PM »
I might have missed it, but what heads were they using? What were the cam specs? Why only a 4.125 crank? Inquiring minds want to know.

1964 Galaxie 390 cruise-o-matic. 445 and C6 coming soon.

fe66comet

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Re: Engine Builder Magazine 431FE 500+HP comparo Fuel Inj vs Carb
« Reply #3 on: March 16, 2015, 07:57:31 PM »
It would seem that if nothing were changed and the engine was originally optimized for a carb that gains would be minimal. Port configuration, chamber design and compression all can be optimized for fuel injection giving better gains than just simply changing the carb for a throttle body.

BB-63

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Re: Engine Builder Magazine 431FE 500+HP comparo Fuel Inj vs Carb
« Reply #4 on: March 17, 2015, 02:55:16 PM »
Interesting comparison.  It would be neat to see a comparison between an expertly tuned carb setup vs. an expertly tuned EFI setup, i.e. rather than the self learning type EFI.  I suspect a distributorless setup would unlock a little more fine tuning potential with respect to the EFI? - Garrett