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Received: with LISTAR (v0.129a; list perf-list); Wed, 12 Jul 2000 12:08:30 -0400 (EDT) Date: Wed, 12 Jul 2000 12:08:30 -0400 (EDT) From: Ford Truck Enthusiasts List Server To: perf-list digest users Reply-to: perf-list  ford-trucks.com Subject: perf-list Digest V2000 #98 Precedence: list ========================================================== Ford Truck Enthusiasts Performance, Hot-Rod and Custom Truck Mailing List Visit our web site: http://www.ford-trucks.com To unsubscribe, send email to: listar ford-trucks.com with the words "unsubscribe perf-list" in the subject of the message. ========================================================== ------------------------------------ perf-list Digest Tue, 11 Jul 2000 Volume: 2000 Issue: 098 In This Issue: Re: 300I6 needs more power Impending Transmission Problems Re: Impending Transmission Problems ---------------------------------------------------------------------- From: "Joel Thomas" Subject: Re: 300I6 needs more power Date: Tue, 11 Jul 2000 23:01:05 -0500 LOOK! this is an example not exactly right if you have a 3.08's and you are going 45 up a hill with the 300I6 and it bogs down it is because it is trying to pull with a RPM(revolutions per minute)that is under it powerband(the rpms the engine make the most power)like it may be dropping down to 1300rpm but if you downshift into 3rd gear you would have to slow down to probably around 35(not right jsut an example)and then you could drive back up to 50 and shift to 4th but then it would bog down again, i know you could drive 35 and forget about but if he doesn't want to or can't because high traffic area. dropping in a 3.55 or 3.73 would make that same 4th gear at 45 have an rpm of around 2500 well in the powerband of the 300I6 so you could actually speed up to 50 and hold till the top of the hill. now do you get the idea of usefull powerband and rearend gears. we offroaders drop our axle gears to around 4.56 and we can crawl but the top speed is limited to around 80 because you get out of the engines powerband 4500rpm and it wont pull it anymore. thanks Joel Thomas Little Rock,AR >I agree that it's all about making the engine run within its power band. But axle gearing doesn't CHANGE the available engine power, it merely changes the road speed at which you realize that power. So does downshifting! Recall this discussion started with a 300 I-6 equipped with a 5-speed tranny, plenty of ratio's, so downshifting is definitely an option. This is precisely why I did not recommend the axle swap proposed. >Downshifting is free. ------------------------------ From: tvsjr sprynet.com Date: Wed, 12 Jul 2000 01:19:49 -0500 Subject: Impending Transmission Problems Well, after 180K miles with my 97 Expedition (XLT, 4x2, 4.6L, 3.31LS), it would seem that my 4R70W transmission is starting to go south. I'm beginning to see a hesitation and slippage shifting out of overdrive, especially when I'm only running about 45mph and lugging the 4.6L engine up a small hill. I also had a failed shift from 3-->2 under heavy acceleration (foot on the floor) a few days ago. The tranny fluid only has about 10K miles on it, so it is nice and clean. That being said, it's time for me to look into transmission rebuilds/replacement. I could have an independant shop do the rebuild, but I would rather have Ford put a brand new transmission in. Does anyone know an approximate cost for a new (preferably not Ford-rebuilt) 4R70W? What is the normal price range for a rebuild, Ford or otherwise? Final question... When the transmission gets rebuilt/replaced, I was thinking about adding a shift kit to firm things up a little bit. Has anyone done this to this transmission? If so, what does it take to install? I would like to have whoever does the rebuild/replacement to add the shift kit. Does anyone have suggestions as to brand and possible price range? Or, is this ill-advised for my truck? I hope some of that makes sense =) If anyone has some information, tips, etc., I would appreciate hearing from you. TIA Terry ------------------------------ Date: Wed, 12 Jul 2000 10:06:51 -0700 (PDT) From: shane san miguel Subject: Re: Impending Transmission Problems Wow! That's pretty impressive mileage. Don't know specifics about the 4R70W but I do know an AOD or AODE rebuild can set you back 700-1200 bucks. I haven't seen a shift kit for your tranny, doesn't mean it's non-existant though. Good luck! Shane 55 F100 5.0 15.51 87 289 Pinto --- tvsjr sprynet.com wrote: > Well, after 180K miles with my 97 Expedition (XLT, > 4x2, 4.6L, 3.31LS), it > would seem that my 4R70W transmission is starting to > go south. I'm > beginning to see a hesitation and slippage shifting > out of overdrive, > especially when I'm only running about 45mph and > lugging the 4.6L engine up > a small hill. I also had a failed shift from 3-->2 > under heavy acceleration > (foot on the floor) a few days ago. The tranny fluid > only has about 10K > miles on it, so it is nice and clean. > > That being said, it's time for me to look into > transmission > rebuilds/replacement. I could have an independant > shop do the rebuild, but > I would rather have Ford put a brand new > transmission in. Does anyone know > an approximate cost for a new (preferably not > Ford-rebuilt) 4R70W? What is > the normal price range for a rebuild, Ford or > otherwise? > > Final question... When the transmission gets > rebuilt/replaced, I was > thinking about adding a shift kit to firm things up > a little bit. Has > anyone done this to this transmission? If so, what > does it take to install? > I would like to have whoever does the > rebuild/replacement to add the shift > kit. Does anyone have suggestions as to brand and > possible price range? Or, > is this ill-advised for my truck? > > I hope some of that makes sense =) If anyone has > some information, tips, > etc., I would appreciate hearing from you. > TIA > Terry > > > ========================================================== > To unsubscribe: > http://www.ford-trucks.com/mailinglist.html#item3 > Please remove this footer when replying. > __________________________________________________ Do You Yahoo!? Get Yahoo! Mail – Free email you can access from anywhere! http://www.ford-trucks.com//lc/lc.php?action=do&link=http://mail.yahoo.com/ ------------------------------ End of perf-list Digest V2000 #98 ********************************* ---------------------------------------------------------- Ford Truck Enthusiasts Performance, Hot-Rod and Custom Truck List Send posts to perf-list ford-trucks.com If you ever want to remove yourself from this mailing |
