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#1 |
Senior Member
Join Date: Aug 2005
Location: Greenwell Springs, Louisiana
Posts: 2,882
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4 speed tranny
My 61 4x4 has a 4 speed trans, it whines really loud while driving. Is this normal, I know its an old truck but its pretty loud. What do yall think? Jeremy
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#2 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,460
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Re: 4 speed tranny
I believe all SM-420s were loud like that. I actually have ever owned not even 4-5 stick vehicles, so I might just be talking out my a....
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#3 |
Senior Member
Join Date: Aug 2005
Location: Greenwell Springs, Louisiana
Posts: 2,882
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Re: 4 speed tranny
I had a 63 4x4 and I cant remember if it was that loud or not. plus I have all the carpet and sound deadner out of the truck for repainting, so that could be why its louder too!
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#4 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: 4 speed tranny
It shouldn't be real loud. I would guess someone ran it without lube. It will probably run a long time, as long as you don't mind the noise.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#5 |
Senior Member
Join Date: Aug 2005
Location: Greenwell Springs, Louisiana
Posts: 2,882
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Re: 4 speed tranny
I was thinking about going to an auto turbo 350. I have the divorced rockwell, could I put in the auto and get a drive shaft shop to make the new shaft to the rockwell?
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#6 |
Registered User
Join Date: Mar 2003
Location: Northern Illinois
Posts: 2,181
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Re: 4 speed tranny
Personally I like driving the old rock boxes. My 60 has the 420, and my 71 blazer has the 465. I'd recommend keeping it
![]() If you DO decide to change, most people would say that the TH350 was a crazy choice when you could go to the 700r4 and get an overdrive. Brian |
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#7 |
Senior Member
Join Date: Aug 2005
Location: Greenwell Springs, Louisiana
Posts: 2,882
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Re: 4 speed tranny
Yea the overdrive would be nice, and I also like the 4- speed what to do??????????
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#8 |
Registered User
Join Date: Mar 2003
Location: Northern Illinois
Posts: 2,181
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Re: 4 speed tranny
The 4x4 is not a divorced transer case, right?
You might be able to get a gear vendors overdrive in there if it's divorced. Brian |
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#9 |
Senior Member
![]() Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,783
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Re: 4 speed tranny
GV's are pricey but I did have one mated to my 350 turbo with attached NP205. I would suggest if you cannot live with what you have -- find a 700 R4 with a NP208. Probably drive shafts would need some mods besides the mounts. Then again I do not own a 61 to know for sure.
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