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Old 06-03-2003, 10:22 PM
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Post how much HP on my 65 stang

i have a 65 stang with a 289 CI engine stock internally but it has a 4 barrel edelbrock carb, edelbrock performer intake, heddmen headers, dual exhaust, 3 " pipes ...40 series flowmasters, and HEI, ACCEL super coil , spark plugs(accel), wires (8mm) accel, MSD eletric disturbtor. has a powerful exhaust sound that sets off alarms...anyways PEople always ask me how much horsepower it has and i say i dont know. can some one give me a accurate estimate on how much HP its got...i just want to know for my information... thanks...

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Old 06-03-2003, 10:33 PM
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I had a 66 mustang with a 289 back in the 70's. According to Ford the bone stock 289 with a 2 barrel carb and single exhaust had 200 horses. I would estimate your set up to be about 240 to 250 horsepower. My car cam stock with a 270 rear end so if you have this and wanted to increase your 0 to 60 exceleration, you could put a 350 ratio in. This will give you less gas milage on the hiway.
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Old 06-04-2003, 12:39 AM
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the number in it self is not interesting if you enjoy the car, but i would just reply: "enough for now"
by the way my estimate is arround 200 to 230 REAL dyno horsepower, but if i were you i would go and have it measured,
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Old 06-04-2003, 12:50 AM
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The 65 289 4bbl engines were rated 225hp
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Old 06-04-2003, 01:37 AM
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[quote]Originally posted by jimfulco:
<strong>The 65 289 4bbl engines were rated 225hp</strong><hr></blockquote>

that's Ford's gross flywheel rating measured without any accesories though, the only real way to tell is to get it dynoed
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Old 06-04-2003, 12:19 PM
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Right on the money andybird. I also read n article in mustang and ford magazine where they tested rear wheel horsepower, and a 65 shelby with manual tranny had 212 rear wheel horsepower, and a 67, 500 KR shelby 428 had just under 300 RW HP, which goes to show that the HP numbers from the 60'ies arent really to be trusted.

BTW, the way the car tested with the biggest HP reading was a 70 Chevelle LS6 6 pack, factory rated at 465 HP, had 335 HP at the rear wheels!!

So come on and have it dynoed and let us know how it goes
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