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06-13-2004, 10:42 AM
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Shift Point on a Ford 289
Since the subject has been broached, any recomendations on the r.p.m. limits on a Ford 289 with a C-4 transmission and ~ 3:90 rear gears?
The motor is in a ~ 3300# car and since I know nothing about the engine I have to assume that the crank, rods, pistons, etc. are stock (the carb, intake, distributor and possibly the cam are not) I would like to hear some input on this. The car is absolutly not going to be raced (well hell, maybe a red light every once in awhile) but I really don't know much about Ford stuff and would like to hear some input from someone who does. Thanks Charlie Smith 
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06-13-2004, 11:03 AM
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I regularly turned early 302's to 6700 rpm (valve float with stock springs and zero lash) with no problems other than a few broken stock piston skirts. With good pistons and proper clearancing I would say they are probably good to 7500 rpm with a set of ARP bolts.
Realize this is only an estimate, your results may vary.
__________________
Outlawed tunes from outlawed pipes
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06-15-2004, 10:53 AM
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Tks for reply but changing out a piston just don't sound very interesting to me. The 5/16 rod bolts and a 2 bolt main block makes me a bunch leary of going over 5000 rpm - I didn' buy this thing to work on it. As a matter of fact if the engine did break a piston skirt I'd change it out for a 351 with a C-6.
Thanks again, Charlie Smith
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06-15-2004, 11:34 AM
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Stay under 6000 then.
__________________
Outlawed tunes from outlawed pipes
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06-15-2004, 08:22 PM
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Well with my 302 i have run it out to 7250 on the dyno without valve float i have flat hydraulic lifters w/ roller rockers from comp, but i stop making power at around 6 large so that's about where i shift.
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06-16-2004, 06:31 AM
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Dont be leary of going over 5000rpms this motor isnt a big block, the 289 is a short stroked motor and designed for high rpms. You will have no problems going anywhere in the 6K range. I wouldnt do it, but I have seen these things goto 8500 before.
Ben
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06-16-2004, 06:43 AM
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I had a 65 country sedan wagon 5300 lbs with a 289 three speed the only way you could get up to speed was wind that little thing real tight. Even just day to day driving that little rubber band was wound real tight. I mean 6500 rpm all day. That engine my dad rebuilt in 75. The car still runs now with 250,000 miles on it.
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06-16-2004, 12:02 PM
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There is a record holding superstock mustang running a 289 with i belive a 7500 stall in the c4.... so i'd wager to say it gets past 8500...
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