|
|
|
09-13-2009, 07:31 PM
|
|||||
|
|||||
|
turbo 400
I just switch carburetors and now tranny will not shift from second to third gear ? checked vacum hose and it appears to be OK ?
|
|
09-13-2009, 07:33 PM
|
||||||
|
||||||
|
Quote:
|
|
09-13-2009, 07:50 PM
|
|||||
|
|||||
|
Did reconnect to vacum port on carb and still no shift
|
|
09-13-2009, 07:52 PM
|
||||||
|
||||||
|
You need to check under it on the trans where it hooks to the modulator it could have came off when you where changing things around. I have done it myself a time or two. If it was working before the swap it can't be much .JMO. Cole
|
|
09-14-2009, 05:19 PM
|
|||||
|
|||||
|
turbo 400 not shifting
I have a turbo 400 thats not shifting from 2-3 gear. I already replaced modulator and checked hose.
|
|
09-14-2009, 05:25 PM
|
|||||
|
|||||
|
do you have reverse?
|
|
09-14-2009, 05:47 PM
|
|||||
|
|||||
|
Yes I have reverse just to give you some info I had a 780 Holley on my 454 that was giving me flooding issues ! so I changed carbs to a 650 I have and now my tranny is not shifting from 2-3rd. I was running vacuum from carb so I changed to intake manifold as well as modular on tranny still no luck !
|
|
09-14-2009, 06:02 PM
|
|||||
|
|||||
|
are you tryingto run ported vacumm or manifold vacumm
|
|
09-14-2009, 06:32 PM
|
|||||
|
|||||
|
Im still learning and was told vacuum from manifold was correct way ? however the vacuum is stronger on 650 carb which one is correct ? I have a 454 in a 61 chevy with turbo 400 out of a 1988.
Last edited by truckboy61; 09-14-2009 at 06:33 PM. Reason: info missing
|
|
09-14-2009, 06:46 PM
|
|||||
|
|||||
|
tranny was working correctly before I changed out carb. Is vacuum pressure different from carb to carb ? 780 - 650 both Holley's
|
|
09-14-2009, 07:07 PM
|
|||||
|
|||||
|
you need to be using manifod vacumm any vacumm source under the throttle blades anything above the throttle blades will be ported vaccum
|
|
09-14-2009, 07:29 PM
|
|||||
|
|||||
|
I have placed nipple for vacuum on intake and it still is not shifting from 2-3 gear
|
|
09-14-2009, 07:43 PM
|
||||||
|
||||||
|
have you verified good vacuum at the modulator?
Is it possible the shifter was knocked out of adjustment? 
__________________
At the Bonneville Salt Flats, first gear is known as 130 mph.
|
|
09-14-2009, 08:00 PM
|
|||||
|
|||||
|
How would I verify ? It still manages to shift 1-2 and Im only assuming per vacuum ? please offer instruction and I'll try I need help !
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Turbo vs Supercharger - Write up!! | FastChevyTruck | Engine | 107 | 02-16-2011 12:18 PM |
| 350 turbo to 400 turbo swap in lemans?? | mtmniles | Transmission - Rearend | 8 | 01-24-2006 12:40 AM |
| Turbo 400 help, Need to know what I did wrong | MAD BOWTIE | Transmission - Rearend | 8 | 12-28-2005 08:39 AM |
| 400 turbo to 350 turbo problems | mikeweyman | Transmission - Rearend | 2 | 04-02-2003 05:58 PM |
| turbo 400 with transfer case to 700-r4 | razzle | Transmission - Rearend | 3 | 11-04-2002 06:12 PM |
