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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Bluesmoke907 on May 08, 2011, 05:37:34 am

Title: 1983 chevy C10
Post by: Bluesmoke907 on May 08, 2011, 05:37:34 am

I have a 1983 chevy c10 2wd long bed 1/2 ton originally came with the 5.0 305, I bought the truck no engine no transmission and now I need help figuring out what transmission it came with from the factory if you anyone could help me out that would be greatly apprecited

Title: Re: 1983 chevy C10
Post by: Irish_Alley on May 08, 2011, 05:48:45 am

not sure about the trans but what do you see in the gear selector window (how many gears)

Title: Re: 1983 chevy C10
Post by: Bluesmoke907 on May 08, 2011, 05:58:10 am

I know it had an automatic but as far as the gear selector it is not there. Dash and steering column was removed from the truck when I bought it

Title: Re: 1983 chevy C10
Post by: beastie_3 on May 08, 2011, 12:16:55 pm

do you have the RPO sheet in the glove box?

Title: Re: 1983 chevy C10
Post by: Bluesmoke907 on May 08, 2011, 09:40:41 pm

No there is no rpo sheet in the glove box

Title: Re: 1983 chevy C10
Post by: 1979C20 on May 08, 2011, 10:33:12 pm

Since it had a 305 I bet it came with a th350? Maybe you could measure the length if the drivelin ed and people in the forum can measure theirs and say which transmission they have and you could find out that way?

Title: Re: 1983 chevy C10
Post by: jaredts on May 09, 2011, 06:54:15 am

I'd be very surprised if you could get a 305 with anything but a 700R4 in a c10 in '83.  My '83 Silverado originally had a 305/700R4.

Title: Re: 1983 chevy C10
Post by: 1979C20 on May 09, 2011, 07:28:00 am

I didnt even think of the 700r4. As a matter of fact my friend has an 84 That originally had a 305/700r4. Now has a crate 350 and same trans. Once again, Maybe a drive line measurement can decide for sure?

Title: Re: 1983 chevy C10
Post by: Grim 82 on May 09, 2011, 09:56:05 am

Presence of a low vacuum switch on the firewall and the wiring for the convertor lockup would point towards it being a 700r4.

Title: Re: 1983 chevy C10
Post by: Irish_Alley on May 09, 2011, 10:06:16 am

Also where the cross member is located can point to what trans

Title: Re: 1983 chevy C10
Post by: TexasRed on May 09, 2011, 04:50:21 pm

The presence of the vacuum switch is not really indicative of anything. My 1984 sierra classic originally came with a th350c and had the switch.

Title: Re: 1983 chevy C10
Post by: zieg85 on May 09, 2011, 11:20:39 pm

Quote from: jaredts on May 09, 2011, 06:54:15 am

I'd be very surprised if you could get a 305 with anything but a 700R4 in a c10 in '83.  My '83 Silverado originally had a 305/700R4.

My 85 has a 305/TH350C combo

Title: Re: 1983 chevy C10
Post by: 87454westernhauler on May 10, 2011, 06:06:41 pm

my 80 has A 350/th350 in it. I would just put a 700r4 in it so you can have overdrive in it.

Title: Re: 1983 chevy C10
Post by: RicoTizzio on June 29, 2012, 02:28:22 pm

So if my 84 swb  has a d and d in a circle. Does that mean it came with a 700 from the factory. Should it be 59 inches from the seal to rear end

Title: Re: 1983 chevy C10
Post by: zieg85 on June 29, 2012, 02:34:12 pm

Quote from: RicoTizzio on June 29, 2012, 02:28:22 pm

So if my 84 swb  has a d and d in a circle. Does that mean it came with a 700 from the factory. Should it be 59 inches from the seal to rear end

That indicates a 700R4 with the gear selector you describe.  Don't know the overall length but a TH350C is the same length.

Title: Re: 1983 chevy C10
Post by: RicoTizzio on June 29, 2012, 03:26:50 pm

Thanks i put a 350/700 in it that's my only hold up. I was worring about the driveshaft working. I measured the driveshaft with the yoke it was 60 inches will this meet the clearances.