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- - 1984 gmc (https://67-72chevytrucks.com/vboard/showthread.php?t=619527)

Already Gone

03-06-2014 09:49 PM

1984 gmc

1 Attachment(s)

I have a chance to bid on this 1984 GMC long box that has only 65000 original miles. It has a 305 with a 3 speed auto trans ( what year did the 4 speed autos come out ) and 2:73 gears. It also has A/C, C/C and tilt. If my memory serves me right 305's of that era had cam problems with the lobes going round, does anyone agree? I would like to keep this truck long term so if anyone has any suggestions to potential problems please let me know. Is there anything else I should check into on the truck? Any opinions on value would be appreciated. Attached is the only pic I have.

TwoFiftyShifter

03-06-2014 10:32 PM

Re: 1984 gmc

I've got an 84 K10 with its original 305. 104,000 miles, runs great.

manimal

03-07-2014 10:15 AM

Re: 1984 gmc

Hey Greg! Nice truck!
When I worked in the machine shop, we never saw 305's come in for flat cams. The bottom ends were fairly stout. It's the heads that will give you grief. They are very thin wall casting heads and crack easily. We use to sell a LOT of World Products S/R Torquer 305 heads to customers with those engines.

Already Gone

03-07-2014 10:59 AM

Re: 1984 gmc

Quote:

Originally Posted by manimal (Post 6562329)

Thanks for the info Lance. I'm going to call the owner today and get some detailed info. I believe he bought it new and from the pic it looks like it is decent shape.

Rubble

03-07-2014 11:21 AM

Re: 1984 gmc

That's a nice truck! Hard to find a low mileage one that nice up here anymore.I'm pretty sure the 700R came out in 81.

Already Gone

03-07-2014 11:33 AM

Re: 1984 gmc

Quote:

Originally Posted by Rubble (Post 6562454)

That's a nice truck! Hard to find a low mileage one that nice up here anymore.I'm pretty sure the 700R came out in 81.

Maybe you had to get the 350 or have rear gears lower than the 2:73's this one has to get a 4 speed automatic.

kody	03-07-2014 01:16 PM

Re: 1984 gmc

bought mine new in 1984,same 305 has over two hundred thousand mi.

Already Gone

03-07-2014 01:53 PM

Re: 1984 gmc

Quote:

Originally Posted by kody (Post 6562619)

bought mine new in 1984,same 305 has over two hundred thousand mi.

and have you had any major issues or rebuilds as yours is the type of info I am looking for.

nekkidhillbilly

03-07-2014 02:02 PM

Re: 1984 gmc

the 84 parts truck i had was oem 700r4 305

kody	03-07-2014 04:49 PM

Re: 1984 gmc

just starter,water pump,and fuel pump. engine never been touched.

Already Gone

03-07-2014 05:38 PM

Re: 1984 gmc

Quote:

Originally Posted by kody (Post 6562876)

just starter,water pump,and fuel pump. engine never been touched.

Thanks and those items should have been replaced over the years with 200k on the truck.

cadillac_al

03-08-2014 08:01 AM

Re: 1984 gmc

305's run forever. A lot of people would balk at the 2.73's but if you have to do some work off road, that's what low range is for. I think that truck would easily be $2-3k around here.

Already Gone

03-08-2014 08:05 AM

Re: 1984 gmc

Quote:

Originally Posted by cadillac_al (Post 6563860)

305's run forever. A lot of people would balk at the 2.73's but if you have to do some work off road, that's what low range is for. I think that truck would easily be $2-3k around here.

I 'll be quite happy if I can get it in that price range.

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