Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Help on a transmission problem?


Poncho Master!

Status: Offline
Posts: 2525
Date:
Help on a transmission problem?


 Changed the coil and still have a puking problem when I floor it and changing from 1st to drive. I can rev the engine up to 5000 with no puking. Keep it in first high rev's no problem. Drive the car like normal...no problems.

If it was fuel pump it would do it when I rev it. Only in motion so I'm thinking transmission or would it be my torque converter?

Who knows a good transmission guy on the west coast?

It a turbo 400 Pontiac



-- Edited by 455gto on Sunday 22nd of May 2011 12:11:09 PM

__________________


A Poncho Legend!

Status: Offline
Posts: 26818
Date:

What do you mean by a "puking" problem? Is it bogging out, stalling?


__________________

Todd
Site Founder

Like us on Facebook. http://www.facebook.com/CanadianPoncho

Canadian Poncho World Headquarters - Prince Edward Island

 



Poncho Master!

Status: Offline
Posts: 2525
Date:

Like it's not getting enough fuel. But in park bringing it up to 4000RPM-5000RPM IS NOT A PROBLEM.

Just when I'm driving it and stomp on it.........it starts to go then blah blah blah



__________________


A Poncho Legend!

Status: Offline
Posts: 35601
Date:

That might be your carb   not trans 



__________________

 



Addicted!

Status: Offline
Posts: 480
Date:

Agree......

__________________


Poncho Master!

Status: Online
Posts: 1977
Date:

Carb or timing



__________________


A Poncho Legend!

Status: Offline
Posts: 26818
Date:

Sounds like it's leaning out under load. Carb, camshaft, low fuel pressure are some of the possible reasons.

__________________

Todd
Site Founder

Like us on Facebook. http://www.facebook.com/CanadianPoncho

Canadian Poncho World Headquarters - Prince Edward Island

 



Addicted!

Status: Offline
Posts: 124
Date:

what kind of carb?

__________________

1979 Pinto



Poncho Master!

Status: Offline
Posts: 2525
Date:

Led Zeppelin wrote:

what kind of carb?


 Rochester 1968. It's been rebuilt. Motor is fresh. 

So it could be the pick-up in the tank. Not getting enough to the pump. Might try an electric pump in the tank.

Car purrs like a kitten and easy start. If I change the timing...confuseconfuseconfuse

Could it be the secondary jets on the carb being too small confuse



__________________


Poncho Master!

Status: Offline
Posts: 2908
Date:

For a joke throw a 750 holley on it. I bet it will Fly. Sounds like your motor is thirsty.

__________________


Canadian Poncho Superstar!

Status: Offline
Posts: 4508
Date:

First thing I'd do is check the fuel pressure at the carb. If it's below spec that's likely your problem. 



__________________

62 Catalina 2 dr post project

69 Parisienne 2 dr ht 427

55 Bel Air 2 dr post 265PP/PG

68 Bel Air 2 dr post BB project

 



Poncho Master!

Status: Offline
Posts: 1888
Date:

I think Paul (65sssd) is 100% correct.....Sounds like carb to me too. I tried to run a quadrajet on a 427 after a cam swap and I couldn't get past 2nd gear without running out of gas. Installed a holley with bigger float bowls and the problem was gone. Even with an electric fuel pump, the quadrajet was just not enough fuel for a thirsty BB.

__________________


Poncho Master!

Status: Offline
Posts: 2525
Date:

You guys got me thinking.......The carb is for a 400 car. Not a 455. Being that I'm pushing more power on a fresh engine build. That carb might not be big enough confuse

 

I'll have to see what I can use on my collector plates to be period correct 



-- Edited by 455gto on Monday 23rd of May 2011 11:14:18 AM

__________________


A Poncho Legend!

Status: Offline
Posts: 48751
Date:

You guys will think I always suggest the same thing cause I suggested this a few days back with someone else's driveability problem!

But anywhere, here goes---

Float level bad and the bowl is not full enough?

Years ago, I drag raced a 327 Acadian that would take off like a scared rabbit and then fall on it's face. A simple float level adjustment solved that problem.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars



Guru

Status: Offline
Posts: 500
Date:

Carl Stevenson wrote:

You guys will think I always suggest the same thing cause I suggested this a few days back with someone else's driveability problem!

But anywhere, here goes---

Float level bad and the bowl is not full enough?

Years ago, I drag raced a 327 Acadian that would take off like a scared rabbit and then fall on it's face. A simple float level adjustment solved that problem.


 Now that sounds like it just might be the problem ... I am the builder of the carb and I tell you I went over her like a fine tooth comb but... Hey I have only built a couple carbs Kim...  Sooooo Its highly possible.  

  I drove her and in first gear you can push her right up to 4000 rpm with no power loss, tried it in second and its the same... but if your rolling and punch it the passing gear kicks in and it just bogs down... thats why I was thinking it could be the tranny slipping somehow... its also down around a pint of tranny fluid...



__________________
Pete


A Poncho Legend!

Status: Offline
Posts: 26818
Date:

If the trans were slipping your engine would rev, not bog.

__________________

Todd
Site Founder

Like us on Facebook. http://www.facebook.com/CanadianPoncho

Canadian Poncho World Headquarters - Prince Edward Island

 



Poncho Master!

Status: Offline
Posts: 2525
Date:

Hey Pete 

Send me the name of that guy in Edmonton that does carbs. Hopefully he's got a 455 carb. Or has anyone dealt with Evilbay on carbs?

Thanks for the info guys....saves me a whole lota money at the tranny shop



__________________


Guru

Status: Offline
Posts: 500
Date:

455gto wrote:

Hey Pete 

Send me the name of that guy in Edmonton that does carbs. Hopefully he's got a 455 carb. Or has anyone dealt with Evilbay on carbs?

Thanks for the info guys....saves me a whole lota money at the tranny shop


 I think this is the guy..  http://www.carbshop.ca/html/aboutus.html



__________________
Pete


Guru

Status: Offline
Posts: 500
Date:

the70judge wrote:
455gto wrote:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280680370807&viewitem=&clk_rvr_id=234777164306


 



__________________
Pete


Guru

Status: Offline
Posts: 500
Date:

the70judge wrote:

Here is one for you Kim......  Make him an offer as it says ;>)

http://peterborough.canadianlisted.com/car-parts/rare-1970-pontiac-gto-455-carburetor_1072249.html

And its in Ontario.... and you will have the proper carb for that engine... The one you have there just needs an adjustment or a "real... carb person" to go over it and it would be good also but it will sell for good money as is...


 



__________________
Pete


Poncho Master!

Status: Offline
Posts: 2530
Date:

Kim, Did you get your carb fixed/tuned or replaced ?



__________________


Poncho Master!

Status: Offline
Posts: 1347
Date:

Kim I call the rochester a boggerjet I had the same problem with mine years ago before I tossed her . I am Holley lover and run a old school 700 double pumper on my Stroker.
If you like I could take her off and we can bolt it on your car and see how she runs, I have re-built it myself a couple of times over the years and got it tuned so nice that as hard as you can hit the pedal it respond's instantly , never has it bogged once. Something to think about.
I think you would have to run a spacer as you will have a spread bore intake for the q-jet. Let me know buddy
Kevin

__________________

 avatar?id=1542123&m=75&t=1389907469

     68-2dr/HT
   

      



Poncho Master!

Status: Offline
Posts: 2525
Date:

I got a Ram Air 3 carb coming from Maryland. He's off the PY forums. I should have it next week.

Kevin I have a spacer and and a old holly maybe. Never could get that Holley to run.

Let me know if you have time maybe we can change it and take it for a burn



__________________


Poncho Master!

Status: Offline
Posts: 1347
Date:

455gto wrote:

I got a Ram Air 3 carb coming from Maryland. He's off the PY forums. I should have it next week.

Kevin I have a spacer and and a old holly maybe. Never could get that Holley to run.

Let me know if you have time maybe we can change it and take it for a burn


 Ya up to you Kim why dont you try your new one first and if it's still not good then i will bring my holley over. What brand of carb are you getting and what was it worth?



__________________

 avatar?id=1542123&m=75&t=1389907469

     68-2dr/HT
   

      



Guru

Status: Offline
Posts: 500
Date:

lueger68 wrote:

Kim I call the rochester a boggerjet I had the same problem with mine years ago before I tossed her . I am Holley lover and run a old school 700 double pumper on my Stroker.
If you like I could take her off and we can bolt it on your car and see how she runs, I have re-built it myself a couple of times over the years and got it tuned so nice that as hard as you can hit the pedal it respond's instantly , never has it bogged once. Something to think about.
I think you would have to run a spacer as you will have a spread bore intake for the q-jet. Let me know buddy
Kevin


 Good one but I have been using my Numbers matching quadrajet since the resto on my Judge and No bogs..  Each to their own I guess.. I  am not a lover of the holley on a GM Product .. Didnt most of them come stock on a F--d????  :>)

 



__________________
Pete
1 2  >  Last»  | Page of 2  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.