04-02-2013, 06:12 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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Quote:
Originally Posted by ERA Chas
I question several other things.
The heading 'A/F Ratio' is listing fuel pressure which is fine but the actual A/F Ratio would be valuable.
I think the BSFC is a bit high for these days but then I see the motor struggles to make more than 50% V/E.
Dan can you post some particulars in the motor's parts list? A 'torque' build should not have a lot of overlap or duration...  |
Chas - it's a 428 with 4.25 stroke crank. Has KC ported/polished/427 valve - 1961 390/401 HP heads, 63 low riser dual quad intake, 427 distributor, 600 Holleys. Compression is suppose to be 9.0. The cam is hydraulic 231/236 at .050 / .563/.575 lift / 112 deg lobe separation. I don't have the timing card handy to look up the overlap. I don't remember where I got this (maybe the dyno operator) but I understood that to actually be the A/F ratio but they were only metering air in one carb so it is half the effective A/F ratio is what I remember. At least that is what I understood (?). Here is the motor on the dyno.
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