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CC Advertisers
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 3Likes
02-20-2015, 07:39 AM
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CC Member
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Join Date: Jun 2005
Location: Belleville, 15 miles East of St Louis MO,
IL
Cobra Make, Engine: Classic 427, I purchased it May 2005, the kit was bought in 1991. I'm not sure when it was completed! Installed GMPP Connect & Cruise 376/525 with T-56 S/M 3.55 gears about 2 years ago! 1/4 miles is with old setup!
Posts: 281
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Not Ranked
I think the "BOSS" motors were the real wild ones! The Boss 302 was built for the 5.0L limit Pony car (Trans Am?) road race wars. The intake, ports, cam and valves were HUGE for a 302 engine! No low-end torque but would make some BIG hp when you spin the heck out of them! The 302 was not much of a street engine but they had to sell like 500 of them to qualify for the race series. I feel the Boss 429 was Ford's drag strip warrior of the time, they made some pretty big hp. Ford also had a 460 CID version in Can-Am cars. This all how I remember my impressions from 40+ years ago and not necessarily facts!
__________________
Al
I want to do right, Just not right NOW!
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02-20-2015, 10:54 AM
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CC Member
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Join Date: Jun 2004
Location: Jasper, GA,
GA
Cobra Make, Engine: Owned CSX 3121 1969-1975. Went to the dark side and bought a 'Vette. May yet repent and be saved.
Posts: 657
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Not Ranked
Based on actual, period test results of 427 Cobras (including my own CSX 3121): at 2700 pounds including driver, fuel, etc, a typical trap speed of 118 mph calculates to 355 hp.
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02-20-2015, 01:56 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,916
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Not Ranked
Quote:
Originally Posted by marcocsx3121
Based on actual, period test results of 427 Cobras (including my own CSX 3121): at 2700 pounds including driver, fuel, etc, a typical trap speed of 118 mph calculates to 355 hp.
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355 flywheel HP or rear wheel HP?
__________________
Brian
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02-20-2015, 02:32 PM
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CC Member
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Join Date: Jun 2004
Location: Jasper, GA,
GA
Cobra Make, Engine: Owned CSX 3121 1969-1975. Went to the dark side and bought a 'Vette. May yet repent and be saved.
Posts: 657
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Not Ranked
Based on the calculator I used.I have to guess flywheel. But it's only a guess.
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02-20-2015, 03:40 PM
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CC Member
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Join Date: Mar 2014
Location: Pass Christian,
Ms
Cobra Make, Engine: FFR MK IV 427W
Posts: 21
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Not Ranked
Great responses
Thanks for feedback
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02-20-2015, 04:04 PM
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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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Not Ranked
Quote:
Originally Posted by marcocsx3121
Based on actual, period test results of 427 Cobras (including my own CSX 3121): at 2700 pounds including driver, fuel, etc, a typical trap speed of 118 mph calculates to 355 hp.
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Assuming the Ford Engineering dyno results of 425 SAE gross flywheel HP was accurate for the early LR, dual quad intake 427s (no reason to think otherwise), by the time alternator, air cleaners, log-type exhaust manifolds, and mufflers were added - 355 net hp at the flywheel seems pretty reasonable to me. |
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