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06-14-2011, 10:23 PM
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#1 | | Member
Join Date: Nov 2009 Location: Springfield, Oh
Posts: 153
Car: 1992 Camaro RS Engine: Was L03 305 TBI...now BB 454 :) Transmission: 700r4 Axle/Gears: 2.73 | 700r4 shifting hard from 1st into 2nd...
Took my car into the tranny shop today, don't want to get ripped off. Anyone know what this problem could be? It's a rebuilt tranny within 7 years, and less than 50,000 miles, probably not even 25,000 miles!! When you really get up on the gas from a stand still tranny hits hard shifting from 1st to 2nd, like someone's hitting the bottom of the car...looked at tranny mount, it is in excellent condition for the age of car...1992 Camaro RS 305
any help MUCH appreciated!! | | |
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06-14-2011, 10:34 PM
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#2 | | Supreme Member
Join Date: May 2007 Location: Montreal, Canada
Posts: 1,994
Car: 1986 Chevrolet Camaro IROC-Z28 Engine: TPI 310ci (LB9) Transmission: Custom Rebuilt 700R4 - 2600 Stall Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip | Re: 700r4 shifting hard from 1st into 2nd...
Depends what it actually sounds like.. Did it just start happening? Mine shifts VERY hard even in part throttle. This happened right after the rebuild as I had asked for hard shifts (corvette servos, higher pressure pump etc.). Could be a performance transmission for all we know?
__________________ "An engine is like an orchestra. It's made up of wind, brass, percussion, and a whole range of other complimentary sections, all working to make that beautiful music that we call 'performance'..."
271FWHP - 354FWTQ --> (UN-TUNED... Tuning in progress! Will DYNO again soon...)
For mods go here --> http://1986irocz.tripod.com/
14.2 @ 96 on the 1/4 mile... | |
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06-14-2011, 10:49 PM
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#3 | | Member
Join Date: Nov 2009 Location: Springfield, Oh
Posts: 153
Car: 1992 Camaro RS Engine: Was L03 305 TBI...now BB 454 :) Transmission: 700r4 Axle/Gears: 2.73 | Re: 700r4 shifting hard from 1st into 2nd...
I've had the car for two years now, I'd love it if it was performance built, but this problem has only happened in the last month! It literally feels and sounds like someone is taking a hammer in hitting right under the center console, and it jerks the whole damn car lol
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06-15-2011, 01:55 AM
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#4 | | Junior Member
Join Date: Mar 2005 Location: BC
Posts: 25
Car: 88 IROC-Z Engine: 5.7 TPI Transmission: 700r4 Axle/Gears: 9bolt 4.11's | Re: 700r4 shifting hard from 1st into 2nd...
broken trans mount maybe? | |
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06-15-2011, 01:58 AM
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#5 | | Supreme Member
Join Date: Jul 1999 Location: Calimesa, California, U.S.
Posts: 3,031
| Re: 700r4 shifting hard from 1st into 2nd...
Then it is the transmission mount, even if it looks good unless there are some bolts missing or loose on the mount. As for the 1-2 hard shifts, the transmission builder porbably blocked the accumulator or used the B&M valve body kit. Either way that is not good in the "long run". Part throttle shifts should not be very noticeable, just WOT shifts. | |
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06-15-2011, 01:15 PM
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#6 | | Member
Join Date: Mar 2008 Location: Lincoln, NE
Posts: 479
Car: 86 Z28 Engine: Built 312 Transmission: T5 Axle/Gears: 10 bolt 3.73 | Re: 700r4 shifting hard from 1st into 2nd...
^X2. I had the same problem. Mine looked good while in the car too......but it came out in 2 pieces. I now have a nice dent where the balancer on my aluminum driveshaft was hitting the tranny tunnel.
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06-15-2011, 01:34 PM
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#7 | | Supreme Member
Join Date: Aug 2009 Location: Elwood, IN
Posts: 3,469
Car: 1986 camaro Sports Coupe Engine: L31 350 Transmission: 89 700R4 Axle/Gears: 3.42 gov lock | Re: 700r4 shifting hard from 1st into 2nd...
check the mount and make sure your tv cable is adjusted correctly
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1986 camaro sports coupe with a base firebird spoiler, iroc hood, Z28 5 spoke rims, 20% window tint.
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5.7 L31 motor, carter all preformance 600 CFM carb, hei distributer, edelbrock proformer vortec intake, 95 LT1 camshaft, alex springs, double roller chain, rebuilt 700R4, 2.5 inch exhaust with flowmasters 80 series muffler.   | |
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06-15-2011, 06:35 PM
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#8 | | Supreme Member
Join Date: Nov 2008 Location: Michigan
Posts: 1,602
Car: 86 IROC Z, 92 RS Engine: 305 4bbl, 305 TBI | Re: 700r4 shifting hard from 1st into 2nd...
Quote:
Originally Posted by BigRogZ28  Took my car into the tranny shop today, don't want to get ripped off. Anyone know what this problem could be? It's a rebuilt tranny within 7 years, and less than 50,000 miles, probably not even 25,000 miles!! When you really get up on the gas from a stand still tranny hits hard shifting from 1st to 2nd, like someone's hitting the bottom of the car...looked at tranny mount, it is in excellent condition for the age of car...1992 Camaro RS 305
any help MUCH appreciated!! | That sound is too patented to be anything else but a bad tranny mount.
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06-15-2011, 06:46 PM
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#9 | | Senior Member
Join Date: Aug 2004 Location: Pasadena, TX
Posts: 800
Car: 1991 RS Engine: 5.0 Transmission: 700r4 | Re: 700r4 shifting hard from 1st into 2nd...
Agree to all above. | |
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06-15-2011, 07:04 PM
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#10 | | Member
Join Date: Nov 2009 Location: Springfield, Oh
Posts: 153
Car: 1992 Camaro RS Engine: Was L03 305 TBI...now BB 454 :) Transmission: 700r4 Axle/Gears: 2.73 | Re: 700r4 shifting hard from 1st into 2nd...
Well, got my car back today, they say tranny needs completely rebuilt....should I believe them? | |
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06-15-2011, 09:04 PM
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#11 | | Supreme Member
Join Date: Nov 2008 Location: Michigan
Posts: 1,602
Car: 86 IROC Z, 92 RS Engine: 305 4bbl, 305 TBI | Re: 700r4 shifting hard from 1st into 2nd...
Quote:
Originally Posted by BigRogZ28 Well, got my car back today, they say tranny needs completely rebuilt....should I believe them? | I would definitly get a second opinion.
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06-15-2011, 09:25 PM
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#12 | | Member
Join Date: Nov 2009 Location: Springfield, Oh
Posts: 153
Car: 1992 Camaro RS Engine: Was L03 305 TBI...now BB 454 :) Transmission: 700r4 Axle/Gears: 2.73 | Re: 700r4 shifting hard from 1st into 2nd...
I'm not great with tranny lingo, but they said a spring was broken in the 1st gear and that third and overdrive were slipping, and something else I can't remember. I did have them put on a polyurethane tranny mount and the bang/hard shift is still there. I really don't want to get my tranny rebuilt...BUT might be a good time to look into a beefed up 700r4 now for the same money as getting this one rebuilt! I dunno...any suggestions!
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ATTENTION: The Surgeon General Says Nothing About Smoking A Mustang!!! | |
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06-15-2011, 09:39 PM
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#13 | | Supreme Member
Join Date: Nov 2008 Location: Michigan
Posts: 1,602
Car: 86 IROC Z, 92 RS Engine: 305 4bbl, 305 TBI | Re: 700r4 shifting hard from 1st into 2nd...
There are many used r4's out there that would bolt in. If you are concerned about spending lots of money, this would be a viable alternative. Tranny shops will insert there hands deep into your pocket.
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06-16-2011, 01:53 AM
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#14 | | Supreme Member
Join Date: Jul 1999 Location: Calimesa, California, U.S.
Posts: 3,031
| Re: 700r4 shifting hard from 1st into 2nd...
Is the 1-2 shift hard? Or just making a noise? Does it make the noise at all throttle openings? How does the transmission shift to you? Are all 4 gears there? Does torque converter lockup work alright? If these things are ok....... then the transmission shop just wants your money. | |
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06-17-2011, 07:58 PM
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#15 | | Member
Join Date: Dec 2007 Location: Cumberland, RI
Posts: 284
Car: 1989 Camaro RS Engine: 305 TBI Transmission: 700R4 | Re: 700r4 shifting hard from 1st into 2nd...
My tranny mount was bad and looked ok from under car. The rubber was actually seperated from the metal. you can't tell unless you remove and inspect. When hitting the gas from a stop the tranny would hit on bottom of the floor. Replaced with ploy mount and all is good.
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06-17-2011, 08:13 PM
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#16 | | Supreme Member
Join Date: Nov 2008 Location: Michigan
Posts: 1,602
Car: 86 IROC Z, 92 RS Engine: 305 4bbl, 305 TBI | Re: 700r4 shifting hard from 1st into 2nd...
Quote:
Originally Posted by xX89RSXx My tranny mount was bad and looked ok from under car. The rubber was actually seperated from the metal. you can't tell unless you remove and inspect. When hitting the gas from a stop the tranny would hit on bottom of the floor. Replaced with ploy mount and all is good. | Just out of curiosity, did you replace the mount, or was it the shop that told you you needed a complete rebuild?
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06-17-2011, 08:13 PM
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