CFM Continued...

Squash realsquash at yahoo.com
Tue May 11 03:07:31 GMT 1999


The article is in the may 1999 issue of "Car Craft"
magazine.  You should buy it!  

502EFI ended up with 591HP and 532lb/ft
502 with 850 holley on the same intake got 542HP and
524 lb/ft

And that is across the RPM range, not just at the
peak!  Even with mismatched intake ports (peanut,
rectangle, oval) the EFI made more HP and torque.

But compared to the holley 850 and a dual-plane
intake, they only managed to get less than 10 hp and
10 lb/ft of torque.

So don't think that any EFI will blow away a carb
under all circumstances!

Andy

--- Walter Sherwin <wsherwin at idirect.com> wrote:
> >I just read an article where a 502GM engine had a
> >single-plane intake with a 4bbl 1000cfm TB on it
> and
> >injectors mounted in the ports.  They installed and
> >tweaked a 750cfm (or was it 850cfm?) holley carb on
> >that intake and compared it to the EFI.  The EFI
> won
> >in HP and torque, not to mention starting and all
> the
> >other givens.  
> 
> 
> 
> 
> Neat!  Where was this published?
> 
> Walt.
> 
> 

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