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General Discussion Sit down and chat with fellow members! Any topics that don't fit other categories goes here.

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  #11  
Old July 30th, 2021, 12:51 AM
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Funky61 Funky61 is online now
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Default Re: 1960 Gmc 305 v6

Welcome ZDADDY!


Glad to hear you are sticking with theV6.


Here is a link to a GMC V6 build-series on YouTube that you may enjoy.

https://www.youtube.com/watch?v=FXPKRjzxRTo


Post some photo's of the interior and side view mirrors when possible

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Last edited by Funky61; July 30th, 2021 at 05:09 AM.
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  #12  
Old July 30th, 2021, 01:21 AM
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LEWISMATKIN LEWISMATKIN is offline
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Default Re: 1960 Gmc 305 v6

welcome to the group!!! anything part # wise that isn't on Jolly's original site, I can furnish. and i agree with ed, keep the sm420 and change the ring gear anf pinion. spicer/dana 44 series. 3.07 is the lowest gmc offered, however fmc had a 2.73 version as an option to the 9" chunk style and with the low 1st gear, it will still pull, while giving you highway speed. good luck, and junk them bowtie motors!!!!!!!!!!!



Lewis Ellis Matkin, Jr.
Ridge Manor, Florida
1965 1002 305e-V6 (soon to be 401M powered)
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  #13  
Old July 30th, 2021, 03:15 AM
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FetchMeAPepsi FetchMeAPepsi is offline
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Default Re: 1960 Gmc 305 v6

Don't forget brakes. A lot of nuts start gearing it up for speed (making it a very heavy, badly aimed bullet) then forget that you need to stop. Beef up the master cylinder, brakes, steering, heck you'd probably be better off getting a newer truck for driving on the highway then using your sweet piece of history here for sunday driving, toodling around town, and taking panoramic pictures of beautiful spots around your area.
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  #14  
Old July 30th, 2021, 01:29 PM
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Default Re: 1960 Gmc 305 v6

Quote:
Originally Posted by ZDADDY View Post
Jbgroby,

That's exactly what I want!!!!!! Low rpms going 70/80...........How does that work with a manual 4speed? I would like to keep the floor shifter......is that doable or to much a pain in the ***?
Got any more pics? I need inspiration. Do you have to change tranny and rear end? What trannies bolt up to the v6?

Thanks for the reply
Zdaddy

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I already had the factory Hydramatic and wanted to keep an automatic - so I dropped in a 700R4. I'd already changed the rear gear back about 7 years ago which DID HELP the non OD hydramatic greatly - the trans was just too expensive to rebuild
(3500 plus shipping to MI) so I found the needed OEM adaptor and a 700R4 and made the swap. I have no clue how you might go the route of a manual and make it OD. First thing is to figure our what you have.. IF you're on Facebook, send me a friend request and I can send you pictures of my various swaps (rea gears, trans, intake, carb, etc.
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  #15  
Old August 2nd, 2021, 12:54 AM
ZDADDY ZDADDY is offline
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Default Re: 1960 Gmc 305 v6

Weekend update
Pulled 2 piece driveshaft, slid tranny out, pulled engine without taking hood off.
Couldn't believe how easy it was. I'm lucky to have an old timer best friend that helps too:-)

Engine and heads heading to machine shop this week.

Going to pull pumpkin cover to see what I got this week too.

I took off the floor shifter ( push down, and turn counterclock wise) for first time without messing it up:-)

If anybody is interested there is a huge autoswap meet at ozark empire fairgrounds Aug 20-22. In Springfield MO. Acres and acres of car stuff, people come from all over the country to get their hard to find auto parts, its something to see. Ill be up there looking for some 6066 brethren lol. I can't wait to get this thing on the road.

Zdaddy

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  #16  
Old August 2nd, 2021, 12:56 AM
ZDADDY ZDADDY is offline
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Default Re: 1960 Gmc 305 v6

Quote:
Originally Posted by Funky61 View Post
Welcome ZDADDY!


Glad to hear you are sticking with theV6.


Here is a link to a GMC V6 build-series on YouTube that you may enjoy.

https://www.youtube.com/watch?v=FXPKRjzxRTo


Post some photo's of the interior and side view mirrors when possible

Funky61

I watched the whole series as soon as I bought the truck:-) That's what got me so excited to do the rebuild.

Question is....... should I do it, or let machine shop do it..........hmmmmmmmm

Zdaddy

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  #17  
Old August 2nd, 2021, 05:08 PM
Jim A Jim A is offline
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Default Re: 1960 Gmc 305 v6

Perhaps I am mistaken in the impression I have gotten over the years that parts (especially rebuild ones) for GMC 305's have become quite hard to find and very expensive.
I hope your machine shop is on top of the situation.
The decision to let them do the reassembly or to do it yourself needs to be based in your experience and confidence in your knowledge and skills.
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  #18  
Old August 3rd, 2021, 02:15 AM
ZDADDY ZDADDY is offline
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Default Re: 1960 Gmc 305 v6

Quote:
Originally Posted by Jim A View Post
Perhaps I am mistaken in the impression I have gotten over the years that parts (especially rebuild ones) for GMC 305's have become quite hard to find and very expensive.

I hope your machine shop is on top of the situation.

The decision to let them do the reassembly or to do it yourself needs to be based in your experience and confidence in your knowledge and skills.
I was under the impression this engine is a 454 with two missing cylinders, which has readily available parts. But not sure.

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  #19  
Old August 3rd, 2021, 02:34 AM
ZDADDY ZDADDY is offline
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Default Re: 1960 Gmc 305 v6

Quote:
Originally Posted by jbgroby View Post
I already had the factory Hydramatic and wanted to keep an automatic - so I dropped in a 700R4. I'd already changed the rear gear back about 7 years ago which DID HELP the non OD hydramatic greatly - the trans was just too expensive to rebuild
(3500 plus shipping to MI) so I found the needed OEM adaptor and a 700R4 and made the swap. I have no clue how you might go the route of a manual and make it OD. First thing is to figure our what you have.. IF you're on Facebook, send me a friend request and I can send you pictures of my various swaps (rea gears, trans, intake, carb, etc.
I took my driveshaft up to shop and they said somebody stuck a small shaft into a larger one and welded it.........So now I'm gonna have to buy a rear end, and drive shaft. Have any ideas on what can bolt up with 3.20ish gears? New ones are pretty expensive, any suggestions?

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  #20  
Old August 3rd, 2021, 02:36 AM
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Ed Snyder Ed Snyder is offline
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Default Re: 1960 Gmc 305 v6

Quote:
Originally Posted by ZDADDY View Post
I was under the impression this engine is a 454 with two missing cylinders, which has readily available parts. But not sure.
I'm not aware of any parts shared with the 454. Check out http://6066gmcguy.com/gmcv6a.html
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