is a 305 v6 a rare motor? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Smokin72on20s · 01-13-2004, 03:31 AM

i know they had these in the early 60s chevy trucks, but how rare are they? how much would a decent one be worth? are they real desirable?

Rooster's 67 · 01-13-2004, 03:40 AM

stump pullin hell of a work truck motor.

personally i think its a boat anchor for my use, but they are a little on the rare side,dont see too many of them. desireable for a work/tow truck but daily driver...leaves a lot to be desired.
as for worth...depends on the buyer.

1969 GMC · 01-13-2004, 03:52 AM

the V6's only came in GMC trucks from 60-70 (i think). they are not really rare in the sense that you are going to make a lot of money selling one. they are rare in that they arent as common as V8s or inlines. everyone i have heard from says they are great pulling torquey motors, that get dismal fuel mileage, and last practically forever. A lot of times they get swapped out cuz parts are harder to find than for SB chevies, and there isn't really that much general awareness of them. they are kinda like the rockwell transfer case and the eaton rearend...throwback pieces that are very durable and strong, but there isn't much knowledge about them floating around.

Smokin72on20s · 01-13-2004, 03:58 AM

so what do you think a decent complete motor would be worth?

*1972C10* · 01-13-2004, 05:51 AM

They looked like a big block version of a 4.3 ya know how the 4.3 is just a 350 minus two cylinders the 305 v6 i seen looked like a big block anyone know what the actual bore/ stroke on one is?

SWEET7T · 01-13-2004, 12:05 PM

big block 305 info just a click away

Erl · 01-14-2004, 04:17 PM

GMC made over 500,000 305V6 motors. I have one in my truck and like it. Price can range from free to $500 depeding on the condition. You can still get most of the parts at NAPA. I bought one with a trans that had 20,000 miles for $250. I have a spare with lots of miles sold for $150. Saw a beautiful completely rebuilt one go for $600 on eBay. Lots of good info over on Jolley's 6066 Web site

FRENCHBLUE72 · 01-14-2004, 10:39 PM

Would be worth alot to some one who was restoring there truck to factory spec's ... Had one in a 65 gmc once can't day I liked it much..

Longhorn Man · 01-15-2004, 01:33 AM

Quote:

Originally posted by 1972C10
They looked like a big block version of a 4.3 ya know how the 4.3 is just a 350 minus two cylinders the 305 v6 i seen looked like a big block...

I would say it looks more like a 409 or 348 with 2 holes cut off rather than a 4.3.

krazy_texan · 01-15-2004, 02:15 AM

my granddads 65 had one and he once said that back in the day people would compare those and power wagons, like they powerstrokes and cummins today. he loved that engine and he worked it to death, the only thing though was that he was always going through brakes because he would pull more that he should.

1969 GMC · 01-15-2004, 02:29 AM

now that I think about it, if the engine has a set of plaid valve covers, try and grab those. i believe they are worth some $$ to certain people. and no, that wasn't a typo. i don't remember why they made the special valve covers, but oh well.

kaycee · 01-16-2004, 04:01 PM

ttt I got 1 I'll sell cheap that still runs it is still in 67 GMC lwb

Erl · 01-16-2004, 04:41 PM

Kaycee,
Jolly over at this web site might want it.
http://www.6066gmctrucks.org/

orangepunkin · 04-23-2004, 01:30 PM

I have a 63 GMC 4 wheele drive with the 305 and plaid valve covers I was told it was an experimental motor . If you changed the heads you could run diesel ie they hand stronger bottom end or something like that also these could be hooked end to end for a v-12 in heavy equipment

*Gee_Emm* · 04-23-2004, 08:18 PM

Here is a good pic of one.

Out of thousands of 67-72 I have seen in junkyards I have only seen 1 305

Longhorn Man · 04-23-2004, 09:05 PM

Interesting, it could be a reaigenal thing, but I have seen about 5 or 6 in 67 - 72 trucks, and know where there are two right now.

Erl · 04-26-2004, 03:54 PM

Gee Emm,
I do not think the 305V6 was offered in Canada. I have a 68 GMC Canadian owners manual and it is not listed. It is listed in my US owners manual.
Erl

68jimmy · 04-26-2004, 06:44 PM

Since we're on the topic of the v6 motors, how many of you have owned or seen the 351 version? I currently have one in my 68 3/4 ton lwb... It's a daily driver, runs great, uses no oil other than the drips..

The two things that I don't care for are the fuel consumption and the vibration...

1969 GMC · 04-26-2004, 07:37 PM

i think the 351 was only available from '66-'68. it wasnt available in '69 according to my service manual.

*Gee_Emm* · 04-26-2004, 07:38 PM

Quote:

Originally posted by Erl
Gee Emm,
I do not think the 305V6 was offered in Canada. I have a 68 GMC Canadian owners manual and it is not listed. It is listed in my US owners manual.
Erl

Hmm, that might explains things. But still the majority of the boneyards I have been to are in the states inlcuding the one I saw the 305 in.

TP from Cntl PA · 04-28-2004, 08:50 AM

Rare...........Well Not exactly...........Awesome..........You Bet!

I got one in my '69 3500 GMC and I love it, it is about the closest you can come to a diesel in a gas engine................Runs the same empty or 3 times over loaded. I wish I had one in my '71 Chevy, I know for sure it would pull the Gooseneck alot better than a 350!

Any of you V-6 fanatics know of any K2500's with a 305 in it for sale? I think that is what my next project should be.

TP

**CPNE** · 04-28-2004, 03:16 PM

Quote:

Originally posted by TP from Cntl PA
Rare...........Well Not exactly...........Awesome..........You Bet!

I got one in my '69 3500 GMC and I love it, it is about the closest you can come to a diesel in a gas engine................Runs the same empty or 3 times over loaded. I wish I had one in my '71 Chevy, I know for sure it would pull the Gooseneck alot better than a 350!

Any of you V-6 fanatics know of any K2500's with a 305 in it for sale? I think that is what my next project should be.

TP

Spoken by a man who knows what trucks are for.

kamikazegmc · 04-28-2004, 03:48 PM

my 63 gmc has the 305 v6 there is some upgrades i'm thinking about do, such as a holley 2bbl 500 cfm, a even fire dist. from a early 80's buick 3.8L,and some dual exuast with glasspacks.

Erl · 04-28-2004, 06:03 PM

I just put the Holley 500 CFM on my V6 truck. This provides a very good improvement in performance. Well worth the $225 investment. I bent 5/16 steel brake line to connect the fuel pump to the carburator for a factory look. The fittings are the same on both ends.

longhorn70gmc · 04-28-2004, 06:45 PM

I just picked up a 61 GMC with one of these in it. The truck was made in Oakland. This thing starts everytime, no problems. The spark plugs are on top of the motor. I think I might drive this thing to go visit Hotrodhenryj. Good post!
Longhorn70gmc

01-13-2004, 03:31 AM	#1
Smokin72on20s Ebay Junky Join Date: Oct 2003 Location: CO Posts: 893	is a 305 v6 a rare motor? i know they had these in the early 60s chevy trucks, but how rare are they? how much would a decent one be worth? are they real desirable? __________________ 1972 CHEVY C-10 SWB 2WD - Possible Typhoon 4.3 turbo drivetrain.. 1983 Chevy c10 swb 2wd - possible 350tbi supercharged...

01-13-2004, 03:40 AM	#2
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	stump pullin hell of a work truck motor. personally i think its a boat anchor for my use, but they are a little on the rare side,dont see too many of them. desireable for a work/tow truck but daily driver...leaves a lot to be desired. as for worth...depends on the buyer. __________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

01-13-2004, 03:52 AM	#3
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	the V6's only came in GMC trucks from 60-70 (i think). they are not really rare in the sense that you are going to make a lot of money selling one. they are rare in that they arent as common as V8s or inlines. everyone i have heard from says they are great pulling torquey motors, that get dismal fuel mileage, and last practically forever. A lot of times they get swapped out cuz parts are harder to find than for SB chevies, and there isn't really that much general awareness of them. they are kinda like the rockwell transfer case and the eaton rearend...throwback pieces that are very durable and strong, but there isn't much knowledge about them floating around. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650 Last edited by 1969 GMC; 01-13-2004 at 03:54 AM.

01-13-2004, 03:58 AM	#4
Smokin72on20s Ebay Junky Join Date: Oct 2003 Location: CO Posts: 893	so what do you think a decent complete motor would be worth? __________________ 1972 CHEVY C-10 SWB 2WD - Possible Typhoon 4.3 turbo drivetrain.. 1983 Chevy c10 swb 2wd - possible 350tbi supercharged...

01-13-2004, 12:05 PM	#6
SWEET7T Try spinnin 4 rear tars Join Date: Sep 2003 Location: Salt Lake City, Utah Posts: 757	Check out this previous thread... big block 305 info just a click away __________________ SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB

01-13-2004, 05:51 AM	#5
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	They looked like a big block version of a 4.3 ya know how the 4.3 is just a 350 minus two cylinders the 305 v6 i seen looked like a big block anyone know what the actual bore/ stroke on one is?

01-14-2004, 04:17 PM	#7
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	GMC made over 500,000 305V6 motors. I have one in my truck and like it. Price can range from free to $500 depeding on the condition. You can still get most of the parts at NAPA. I bought one with a trans that had 20,000 miles for $250. I have a spare with lots of miles sold for $150. Saw a beautiful completely rebuilt one go for $600 on eBay. Lots of good info over on Jolley's 6066 Web site __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

01-14-2004, 10:39 PM	#8
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Would be worth alot to some one who was restoring there truck to factory spec's ... Had one in a 65 gmc once can't day I liked it much.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

01-15-2004, 02:15 AM	#10
krazy_texan Registered User Join Date: Oct 2002 Location: West Des Moines, Ia Posts: 3,233	my granddads 65 had one and he once said that back in the day people would compare those and power wagons, like they powerstrokes and cummins today. he loved that engine and he worked it to death, the only thing though was that he was always going through brakes because he would pull more that he should. __________________ Krazy Texan My Trucks are made with Wrenches not Chop Sticks 1967 GMC 3/4 ton "Johnny Cash" 1990 v1500 suburban 1967 Ford f100 Swb 4x4 "green bean" GOD BLESS JESUS, JOHN WAYNE, AND THE ALAMO

01-15-2004, 02:29 AM	#11
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	now that I think about it, if the engine has a set of plaid valve covers, try and grab those. i believe they are worth some $$ to certain people. and no, that wasn't a typo. i don't remember why they made the special valve covers, but oh well. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

01-16-2004, 04:01 PM	#12
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,454	WOW ttt I got 1 I'll sell cheap that still runs it is still in 67 GMC lwb __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60

01-16-2004, 04:41 PM	#13
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	Kaycee, Jolly over at this web site might want it. http://www.6066gmctrucks.org/ __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-23-2004, 01:30 PM	#14
orangepunkin Registered User Join Date: Mar 2004 Posts: 13	I have a 63 GMC 4 wheele drive with the 305 and plaid valve covers I was told it was an experimental motor . If you changed the heads you could run diesel ie they hand stronger bottom end or something like that also these could be hooked end to end for a v-12 in heavy equipment

04-23-2004, 08:18 PM	#15
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 3,991	Here is a good pic of one. Out of thousands of 67-72 I have seen in junkyards I have only seen 1 305

04-23-2004, 09:05 PM	#16
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Interesting, it could be a reaigenal thing, but I have seen about 5 or 6 in 67 - 72 trucks, and know where there are two right now.



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04-26-2004, 03:54 PM	#17
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	Gee Emm, I do not think the 305V6 was offered in Canada. I have a 68 GMC Canadian owners manual and it is not listed. It is listed in my US owners manual. Erl __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-26-2004, 06:44 PM	#18
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	Since we're on the topic of the v6 motors, how many of you have owned or seen the 351 version? I currently have one in my 68 3/4 ton lwb... It's a daily driver, runs great, uses no oil other than the drips.. The two things that I don't care for are the fuel consumption and the vibration...

04-26-2004, 07:37 PM	#19
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	i think the 351 was only available from '66-'68. it wasnt available in '69 according to my service manual. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

04-28-2004, 08:50 AM	#21
TP from Cntl PA Registered User Join Date: Apr 2003 Location: Central PA....In the Berg of Nisbet Posts: 790	Rare...........Well Not exactly...........Awesome..........You Bet! I got one in my '69 3500 GMC and I love it, it is about the closest you can come to a diesel in a gas engine................Runs the same empty or 3 times over loaded. I wish I had one in my '71 Chevy, I know for sure it would pull the Gooseneck alot better than a 350! Any of you V-6 fanatics know of any K2500's with a 305 in it for sale? I think that is what my next project should be. TP __________________ '72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!

04-28-2004, 03:48 PM	#23
kamikazegmc Registered Smarta$$ Join Date: Mar 2004 Location: vancouver, wa Posts: 214	my 63 gmc has the 305 v6 there is some upgrades i'm thinking about do, such as a holley 2bbl 500 cfm, a even fire dist. from a early 80's buick 3.8L,and some dual exuast with glasspacks. __________________ 63 GMC custom going to be slammed

04-28-2004, 06:03 PM	#24
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	I just put the Holley 500 CFM on my V6 truck. This provides a very good improvement in performance. Well worth the $225 investment. I bent 5/16 steel brake line to connect the fuel pump to the carburator for a factory look. The fittings are the same on both ends. __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-28-2004, 06:45 PM	#25
longhorn70gmc Senior Member Join Date: Feb 2001 Location: Ridgecrest. CA, USA Posts: 1,715	I like it! I just picked up a 61 GMC with one of these in it. The truck was made in Oakland. This thing starts everytime, no problems. The spark plugs are on top of the motor. I think I might drive this thing to go visit Hotrodhenryj. Good post! Longhorn70gmc __________________ Billy 1970 GMC Sierra Grande 402/TH400 (Longhorn)14 years and counting rebuild! 1975 (Build) Chevrolet SWB 4X4 350 SB Lifted 6 inches 1970 Ford F250 Ranger 390 BB 2010 Ford Super Duty F250 XLT W/4 inch lift kit and Pro Comp Tires Hub Cap Freak! *I need another truck like I need another hole in the head!* I'M IN THE MARKET...AS IT WERE!

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