My Transmission went BOOM!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tvblazer78 · 07-21-2007, 10:01 PM

Last week I went to a truck show and on the way home I hit the gas to hard. It hit second gear and Boom!! After that it would shift first to third not even go into second gear. So today I pulled the pan off and as you know, it did not look good. So I made a call to my transmission guy and he said your second gear in a 350 turbo is the weakest link. He said my second gear roller clutch for the outer race went BOOM!! Like he said it did not slip like it did before. My blazer eats more transmission then I have ever seen. It has to much motor and dose not spend the tires so something has to give.

Well after this I will not be hamering on it as much and have it fix so it will not shift so hard. Hope you like the pic's.

Trav

Aarons72s · 07-22-2007, 12:06 AM

Dang! You really did blow it. Might be time for a th400 if it eats as many as you say.

**Captkaos** · 07-23-2007, 11:45 PM

Ouch!

68GMC454 · 07-25-2007, 04:42 AM

i think its time for a bigger tougher tranny....

tvblazer78 · 07-25-2007, 07:50 AM

I think you all are right, I my start looking for 400 and or my friend has a 4l80e that I could try..

**Zoomad75** · 07-26-2007, 04:23 PM

I did the same thing in my 69 Nova. It hit 2nd hard and bang- no more 2nd gear. 1st and 3rd still worked, but 2nd was gone. I pulled mine apart and found I broke the iron ring that the clutch discs rides against for 2nd gear. Broke into 3 chunks and stayed in place, but since it broke past the snap ring that holds it all in, the clutches couldn't hold. I replaced a bunch of junk on that one before I figured it out. Luckly it was a spare trans I had thrown in while I rebuilt the original one. I only had to suffer without 2nd for a couple of weeks.

A TH400 would fit right in for the most part.

Kevin45 · 07-30-2007, 03:53 PM

Quote:

I think you all are right, I my start looking for 400 and or my friend has a 4l80e that I could try..

You sure you want to go with a 4L80E as that tranny is all electronically controlled by computer. A 700R4 is not computer controlled and would give you overdrive. Or better yet I would look into something like a Jegs tranny that is built to handle the power. Just a suggestion.

Kevin

tvblazer78 · 08-09-2007, 07:33 PM

Well got my tranny back, I had the 350 fix one more time. I am thinking about a 400 later this year, but for now I am putting 350 back in. I have only had the blazer out on the road 4 or 5 times this summer, so this is a fast fix so I can drive it some more this summer.

Take a look at the bad parts, this was a very big boom on my part. enjoy the pic's..

**Thealien** · 08-09-2007, 09:24 PM

If your going to break something you may as well break it good!!

Maybe you should keep a spare on the shelf!

07-21-2007, 10:01 PM	#1
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	My Transmission went BOOM!! Last week I went to a truck show and on the way home I hit the gas to hard. It hit second gear and Boom!! After that it would shift first to third not even go into second gear. So today I pulled the pan off and as you know, it did not look good. So I made a call to my transmission guy and he said your second gear in a 350 turbo is the weakest link. He said my second gear roller clutch for the outer race went BOOM!! Like he said it did not slip like it did before. My blazer eats more transmission then I have ever seen. It has to much motor and dose not spend the tires so something has to give. Well after this I will not be hamering on it as much and have it fix so it will not shift so hard. Hope you like the pic's. Trav Attached Images __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012 Last edited by tvblazer78; 07-21-2007 at 11:05 PM.

07-22-2007, 12:06 AM	#2
Aarons72s Registered User Join Date: Apr 2006 Location: oklahoma Posts: 10,669	Re: My Transmission went BOOM!! Dang! You really did blow it. Might be time for a th400 if it eats as many as you say.

07-23-2007, 11:45 PM	#3
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: My Transmission went BOOM!! Ouch! __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

07-25-2007, 04:42 AM	#4
68GMC454 THE VILLIAGE IDIOT Join Date: Nov 2006 Location: Tooele, Utah Posts: 1,405	Re: My Transmission went BOOM!! i think its time for a bigger tougher tranny.... __________________ honestly honey,,i have no idea how that truck got here.

07-25-2007, 07:50 AM	#5
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: My Transmission went BOOM!! I think you all are right, I my start looking for 400 and or my friend has a 4l80e that I could try.. __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012

07-26-2007, 04:23 PM	#6
Zoomad75 K5Camper Join Date: Mar 2004 Location: Pueblo, CO Posts: 1,513	Re: My Transmission went BOOM!! I did the same thing in my 69 Nova. It hit 2nd hard and bang- no more 2nd gear. 1st and 3rd still worked, but 2nd was gone. I pulled mine apart and found I broke the iron ring that the clutch discs rides against for 2nd gear. Broke into 3 chunks and stayed in place, but since it broke past the snap ring that holds it all in, the clutches couldn't hold. I replaced a bunch of junk on that one before I figured it out. Luckly it was a spare trans I had thrown in while I rebuilt the original one. I only had to suffer without 2nd for a couple of weeks. A TH400 would fit right in for the most part. __________________ Rob Z. 1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP 1991 K5 8.1L/NV4500/241/D44/14b FWC Camper

08-09-2007, 07:33 PM	#8
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: My Transmission went BOOM!! Well got my tranny back, I had the 350 fix one more time. I am thinking about a 400 later this year, but for now I am putting 350 back in. I have only had the blazer out on the road 4 or 5 times this summer, so this is a fast fix so I can drive it some more this summer. Take a look at the bad parts, this was a very big boom on my part. enjoy the pic's.. Attached Images __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012 Last edited by tvblazer78; 08-09-2007 at 07:35 PM.

08-09-2007, 09:24 PM	#9
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: My Transmission went BOOM!! If your going to break something you may as well break it good!! Maybe you should keep a spare on the shelf!

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