I have a 6cyl, but which one? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shifty · 03-06-2005, 06:45 PM

Hey,

New 'round these parts.

I just bought a "new" '68 C-10 stepside. It has one of the (3) inline 6's that came with this particular year, but I can't seem to figure out the displacement of the engine. Is there anything in particular I can look for?

I know it's the original engine and it looks like the original 1-barrel carb as well. 99.9% of the truck is stock.

Oh - and I've noticed that some people are really sensitive about posting the VIN # of their vehicles online, why is that?

Pics of my new toy:

shifty · 03-06-2005, 06:53 PM

PS - pic of the engine - as though it helps? Just posting for the heck of it.

da-burb · 03-06-2005, 06:56 PM

Nice truck. Your's is OLMG (old lady mint green, my pet name for that color) just like my 67 C10. You will most likely have a 250 cu in 6 under the hood. Look at the passenger side of the engine. It will be a 250 if it is front to back; distributor, fuel pump, motor mount. A 292 will be distributor, motormount, fuel pump. I'm not sure about the vin number deal. To me it isn't a big deal, but it is like the social security number of the truck.

CHEVY & GMC FOREVER · 03-06-2005, 07:01 PM

I'd say the Turbo-Thrift 250 six, but I could be wrong.....

shifty · 03-06-2005, 07:14 PM

Thanks for the quick respons, guys. I put some pics of the engine above if it helps.

The truck is knocking somewhere in the lower frontend of the engine. Sounds like it's coming from near the crankshaft. I'm thinking it's either spun a bearing or something or maybe the harmonic balancer. It's a very rhythmic knocking sound, really deep. There's no metal shavings in the oil, so I'm not thinking it's very serious.

Auto Zone's website is showing the 6cyl's as :
6 Cylinders 230 3.8L 1BL
6 Cylinders 250 4.1L 1BL
6 Cylinders 292 4.8L 1BL

I really need to get a Hayne's manual or something for it. It's one of the only things that didn't come with the truck (it's missing the factory radio and has two aftermarket Pioneer speakers in it, it also has over-the-shoulder seatbelts also).

I've got some more questions also. I'm pretty confused about the document in the glove box. It looks like it's inconsistent. I'll post about it in another thread.

1969 GMC · 03-06-2005, 07:27 PM

stock, if it wasnt mentioned on the sticker, should be a 250. IIRC the 230 was not available in '68, and the 292 would be listed as optional. however...things change.

btw, that is one sharp truck...I like it!

shifty · 03-06-2005, 07:34 PM

Quote:

Originally Posted by 1969 GMC

btw, that is one sharp truck...I like it!

Thanks! I only paid $4k for it. I'm VERY happy, been wanting this exact same truck for at least a decade now. I'm probably one of the happiest people on the face of the planet. I'm so lucky to have netted it.

It has some rust. The person that "restored" it did a little better than a half-ass job (3/4-ass job, maybe?). I can't tell if the restoration was frame-off (rotisserie) or not. There's some definite rust bubbles peeking through in the typical places now. Gonna hafta dip or sandblast everything all over again and start fresh

I don't mind though - the bed comes apart so easily, it might not be too much work. I want to repaint it some colour other than granny-green, so ... Such a dilemma - keep it stock or mod/rod it out? Tough call....

**Palf70Step** · 03-06-2005, 07:46 PM

What ever you do, DO NOT get a rebuilt engine from AutoZone if you plan on replacing it. To erratic in their quality. I'm living with their aftermath in my 82, Very nice truck.

Fred T · 03-06-2005, 09:47 PM

Looks like a 250. To confirm look for the casting number on the passenger side of the block. Should bo on the lower portion, usually just aft of the motor mount. You're looking for raised letters. Go to www.inliners.org under casting #s.

mr402 · 03-06-2005, 09:48 PM

Shifty, That is one nice looking truck. Not to many 6 cyls in that great a condition. I would be concerned about that knock though. Lack of metal shavings just means they could be hiding in the filter. Suggest you disconnect the water pump to verify that's not it. I also notice a black spot under the 2nd port on the exhaust manifold. Could be an exhaust leak making that noise as well.

Longhorn Man · 03-06-2005, 10:07 PM

Auto Zone is wrong on there engine listings...and who measures inlines in liters?

You'll learn that place sucks when you are dealin with old verhicles.
Like already mentioned, there were only 2 inline engines offered 67 - 72, the 250, and the 292. Asuming to be original, if the glove box SPID sticker has no engine listed, then it'll be a 250.
That is one sweet lookin truck. 68's are sweet, short step trucks are awsome...and IMO, that color kicks tail on that truck. No, it wouldn't have been my first choice, however, after seeing it, I think I would put it back in teh same color...but that's just me.
I doubt that thing had a frame off, the firewall is painted black on yours, and if it was removed from the frame, then they woulda (shoulda anyways) done it in body color like GM did.
Either way, that is a sweet lookin rig that I would be proud to have staining my driveway. you have any interior pics?
The VIN thing is kinda real, kinda BS. Thieves and crooks are getting smarter and they have computers. If they have your vin, and the right connections, they can fabricate a title for your truck and claim it to be there's.
However, i don't think it has ever happened. Sounds too much like an urban legond to me. SOme ppl are afraid to post there license plates on line too. Most states have privacy laws making info rather hard to obtain...besides, you want my address? 'll give it to you.

take my truck...my neighbor will probably shoot you. (no joke...he's a bit mental)
Welcome to the best site on the web for 67 - 72 trucks Where there is no such thing as a stupid question...well...there was that one time....

Brainchild · 03-06-2005, 10:10 PM

Looks just like the 250 in my 67,and the one in my brothers 69,so I'd say it's a 250.It's not a 292.Like mentioned the fuelpump is behind the motormount on a 292.

70 shorty · 03-06-2005, 10:23 PM

Hey that truck looks somewhat familiar to me. Of course maybe that's because mine is a short stepside with a 250 also. Unfortunately for me, mine is in nowhere near as good shape as yours is.

ROBBY WHITE · 03-06-2005, 11:57 PM

Looks Just Like The I6 250 In My 67 Gmc. 1 Barrel Carb And All. I Need To Mount My Ignition Coil In Mine Po Didn't Use One. Can You Take A Picture Of It On Your Truck So I Can See How It Is Mounted. What Kind Of Braket Did The Use Thanks And Very Nice Truck Wish My 67 Was That Nice.

Truckstuff · 03-07-2005, 12:40 AM

The easiest way to tell is to look at the motor mounts. A 250 mounts are straight across from each other, 292 are off set from each other.

shifty · 03-07-2005, 12:54 AM

Quote:

Originally Posted by Longhorn Man

any interior pics?

This is all I have for now.

Quote:

Originally Posted by Longhorn Man

Welcome to the best site on the web for 67 - 72 trucks Where there is no such thing as a stupid question...well...there was that one time....

Thanks man, I kinda got the idea that this place is full of some knowledge. It's no wonder so many people make it their home. I am happy to be a part of it and hope I can chip in my tech knowledge as well.

shifty · 03-07-2005, 12:56 AM

Quote:

Originally Posted by ROBBY WHITE

Looks Just Like The I6 250 In My 67 Gmc. 1 Barrel Carb And All. I Need To Mount My Ignition Coil In Mine Po Didn't Use One. Can You Take A Picture Of It On Your Truck So I Can See How It Is Mounted. What Kind Of Braket Did The Use Thanks And Very Nice Truck Wish My 67 Was That Nice.

I'll try to take one tomorrow night. If I don't get it to you, bump the thread as a reminder.

ROBBY WHITE · 03-07-2005, 02:02 AM

Thanks. Man Is That Thing Is Clean Intrior Is Great.

67_C-30 · 03-07-2005, 02:05 AM

That is either a 230 or a 250. The lifter covers on a 292 are 6" tall, and the ones on a 230/250 are around 4" like your's. The deck height on a 292 is much tall to accomodate the long 4 1/8" stroke.

shifty · 03-07-2005, 01:33 PM

Quote:

Originally Posted by ROBBY WHITE

Thanks. Man Is That Thing Is Clean Intrior Is Great.

Alright, here are some pictures. Let me know if these are good enough. I took them as I was running out of the house; it's a little dark in the garage and the flash is so bright. They didn't turn out the greatest, I swear I had the camera in Macro mode to take close-ups, but It's looking like that's not the case.

Need something clearer?

ROBBY WHITE · 03-07-2005, 02:49 PM

Thanks For The Pictures That Helps Alot!!!i Wonder If An Aftermarket Bracket From Msd Would Work I Know They Make One. Does Anybody Else Have One From A I6 They Would Like To Sell My Is Just Hanging Right Now.

shifty · 03-07-2005, 02:55 PM

I dunno if this helps, but here's a new I-6 for $350. Well, almost new. I saw this on Craigslist for Atlanta today. I emailed the guy, but still no response yet.

http://atlanta.craigslist.org/car/62675687.html

Hope this helps.

Wait - here is the same thing on eBay - this is from the same guy:

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

Putter · 03-07-2005, 03:00 PM

I just noticed it is a non-A/C truck, but you have the glovebox liner for a truck WITH A/C. Noth hurting anything, but you lost a little storage space.
On a happier note, that is one good looking truck.

shifty · 03-07-2005, 03:01 PM

Thanks, Putter.

I would like to steal the A/C from another truck, if possible. A/C is on the list of things to buy in the future.

This thing came with nothing

No PS
No PB
No A/C
No tilt
But best of all - no excessive rust

It sure did come with a lot of miles though :p

Putter · 03-07-2005, 03:12 PM

Sounds like my '69 that I got from Grandpa. Same color as yours and same options....NONE.

03-06-2005, 06:45 PM	#1
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	I have a 6cyl, but which one? Hey, New 'round these parts. I just bought a "new" '68 C-10 stepside. It has one of the (3) inline 6's that came with this particular year, but I can't seem to figure out the displacement of the engine. Is there anything in particular I can look for? I know it's the original engine and it looks like the original 1-barrel carb as well. 99.9% of the truck is stock. Oh - and I've noticed that some people are really sensitive about posting the VIN # of their vehicles online, why is that? Pics of my new toy:

03-06-2005, 06:56 PM	#3
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	Nice truck. Your's is OLMG (old lady mint green, my pet name for that color) just like my 67 C10. You will most likely have a 250 cu in 6 under the hood. Look at the passenger side of the engine. It will be a 250 if it is front to back; distributor, fuel pump, motor mount. A 292 will be distributor, motormount, fuel pump. I'm not sure about the vin number deal. To me it isn't a big deal, but it is like the social security number of the truck. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087 Last edited by da-burb; 03-06-2005 at 06:58 PM.

03-06-2005, 07:01 PM	#4
CHEVY & GMC FOREVER Registered User Join Date: Nov 2004 Location: New Lenox,IL Posts: 306	I'd say the Turbo-Thrift 250 six, but I could be wrong..... __________________ 1985 Chevrolet C-30 454 1-TON Dooley 1969 CHEVROLET CST-10 PICK-UP Good memories 1999 Chevrolet Z71 Ext. cab 5.7L Good Memories With a quart of oil, and a gallon of gas, she won't let no other car pass!!!. & FOREVER

03-06-2005, 07:27 PM	#6
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	stock, if it wasnt mentioned on the sticker, should be a 250. IIRC the 230 was not available in '68, and the 292 would be listed as optional. however...things change. btw, that is one sharp truck...I like it! __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

03-06-2005, 07:46 PM	#8
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,820	What ever you do, DO NOT get a rebuilt engine from AutoZone if you plan on replacing it. To erratic in their quality. I'm living with their aftermath in my 82, Very nice truck. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

03-06-2005, 06:53 PM	#2
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	PS - pic of the engine - as though it helps? Just posting for the heck of it.

03-06-2005, 07:14 PM	#5
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Thanks for the quick respons, guys. I put some pics of the engine above if it helps. The truck is knocking somewhere in the lower frontend of the engine. Sounds like it's coming from near the crankshaft. I'm thinking it's either spun a bearing or something or maybe the harmonic balancer. It's a very rhythmic knocking sound, really deep. There's no metal shavings in the oil, so I'm not thinking it's very serious. Auto Zone's website is showing the 6cyl's as : 6 Cylinders 230 3.8L 1BL 6 Cylinders 250 4.1L 1BL 6 Cylinders 292 4.8L 1BL I really need to get a Hayne's manual or something for it. It's one of the only things that didn't come with the truck (it's missing the factory radio and has two aftermarket Pioneer speakers in it, it also has over-the-shoulder seatbelts also). I've got some more questions also. I'm pretty confused about the document in the glove box. It looks like it's inconsistent. I'll post about it in another thread.

03-06-2005, 09:47 PM	#9
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Looks like a 250. To confirm look for the casting number on the passenger side of the block. Should bo on the lower portion, usually just aft of the motor mount. You're looking for raised letters. Go to www.inliners.org under casting #s. __________________ Fred There is no such thing as too much cam...just not enough engine.

03-06-2005, 09:48 PM	#10
mr402 Registered User Join Date: Jan 2004 Location: Elmira, Oregon Posts: 449	Shifty, That is one nice looking truck. Not to many 6 cyls in that great a condition. I would be concerned about that knock though. Lack of metal shavings just means they could be hiding in the filter. Suggest you disconnect the water pump to verify that's not it. I also notice a black spot under the 2nd port on the exhaust manifold. Could be an exhaust leak making that noise as well.

03-06-2005, 10:07 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Auto Zone is wrong on there engine listings...and who measures inlines in liters? You'll learn that place sucks when you are dealin with old verhicles. Like already mentioned, there were only 2 inline engines offered 67 - 72, the 250, and the 292. Asuming to be original, if the glove box SPID sticker has no engine listed, then it'll be a 250. That is one sweet lookin truck. 68's are sweet, short step trucks are awsome...and IMO, that color kicks tail on that truck. No, it wouldn't have been my first choice, however, after seeing it, I think I would put it back in teh same color...but that's just me. I doubt that thing had a frame off, the firewall is painted black on yours, and if it was removed from the frame, then they woulda (shoulda anyways) done it in body color like GM did. Either way, that is a sweet lookin rig that I would be proud to have staining my driveway. you have any interior pics? The VIN thing is kinda real, kinda BS. Thieves and crooks are getting smarter and they have computers. If they have your vin, and the right connections, they can fabricate a title for your truck and claim it to be there's. However, i don't think it has ever happened. Sounds too much like an urban legond to me. SOme ppl are afraid to post there license plates on line too. Most states have privacy laws making info rather hard to obtain...besides, you want my address? 'll give it to you. take my truck...my neighbor will probably shoot you. (no joke...he's a bit mental) Welcome to the best site on the web for 67 - 72 trucks Where there is no such thing as a stupid question...well...there was that one time....

03-06-2005, 10:10 PM	#12
Brainchild Still drivin' a Rat Rod Join Date: Sep 2004 Location: Monett Missouri Posts: 4,925	Looks just like the 250 in my 67,and the one in my brothers 69,so I'd say it's a 250.It's not a 292.Like mentioned the fuelpump is behind the motormount on a 292. __________________ Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the a$# 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website

03-06-2005, 10:23 PM	#13
70 shorty Where's my beer? Join Date: Oct 2004 Location: Glen Allen, VA Posts: 1,768	Hey that truck looks somewhat familiar to me. Of course maybe that's because mine is a short stepside with a 250 also. Unfortunately for me, mine is in nowhere near as good shape as yours is. __________________ 70 C10, shortstep, .30 over 250,Hurst shifted 3 spd parts hauler. Holley 390, Clifford Intake, Header, ported cylinder head, unknown bigger cam. 79 Corvette L82, 4 spd, black, red interior, headers, flowmasters, and unkown bigger cam. '03 Grand Cherokee Laredo, 4.0 4x4 daily driver. 165K miles, and runs great '08 Tahoe LTZ 4x4 155K

03-06-2005, 11:57 PM	#14
ROBBY WHITE ZOIE AND ZACK Join Date: Dec 2003 Location: ABILENE, TX. Posts: 212	Looks Just Like The I6 250 In My 67 Gmc. 1 Barrel Carb And All. I Need To Mount My Ignition Coil In Mine Po Didn't Use One. Can You Take A Picture Of It On Your Truck So I Can See How It Is Mounted. What Kind Of Braket Did The Use Thanks And Very Nice Truck Wish My 67 Was That Nice. __________________ AMERICAN BULLDOGS AND CHEVY TRUCKS 71 1/2 SUBURBAN 402BB IN PROGRESS 90 1/2 TON SILVERADO 02 1/2 SUBURBAN 67 GMC 1/2 TON LONGBED 05 AVALANCHE

03-07-2005, 12:40 AM	#15
Truckstuff Registered User Join Date: Dec 2003 Location: Cloverdale, British Columbia Canada Posts: 159	The easiest way to tell is to look at the motor mounts. A 250 mounts are straight across from each other, 292 are off set from each other. __________________ Real Trucks are Built not Bought Building: 1981 GM SB LowRider 1985 GM K3500 3+3 1981 GM K2500 SSB 1980 GM K2500 X-BC Hydro 1979 GM K3500 3+3 1976 GM K5 Blazer 1970 Custom 10 http://bc4x4.com/

03-07-2005, 02:02 AM	#18
ROBBY WHITE ZOIE AND ZACK Join Date: Dec 2003 Location: ABILENE, TX. Posts: 212	Thanks. Man Is That Thing Is Clean Intrior Is Great. __________________ AMERICAN BULLDOGS AND CHEVY TRUCKS 71 1/2 SUBURBAN 402BB IN PROGRESS 90 1/2 TON SILVERADO 02 1/2 SUBURBAN 67 GMC 1/2 TON LONGBED 05 AVALANCHE



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03-07-2005, 02:05 AM	#19
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	That is either a 230 or a 250. The lifter covers on a 292 are 6" tall, and the ones on a 230/250 are around 4" like your's. The deck height on a 292 is much tall to accomodate the long 4 1/8" stroke. __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!

03-07-2005, 02:49 PM	#21
ROBBY WHITE ZOIE AND ZACK Join Date: Dec 2003 Location: ABILENE, TX. Posts: 212	Thanks For The Pictures That Helps Alot!!!i Wonder If An Aftermarket Bracket From Msd Would Work I Know They Make One. Does Anybody Else Have One From A I6 They Would Like To Sell My Is Just Hanging Right Now. __________________ AMERICAN BULLDOGS AND CHEVY TRUCKS 71 1/2 SUBURBAN 402BB IN PROGRESS 90 1/2 TON SILVERADO 02 1/2 SUBURBAN 67 GMC 1/2 TON LONGBED 05 AVALANCHE

03-07-2005, 02:55 PM	#22
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	I dunno if this helps, but here's a new I-6 for $350. Well, almost new. I saw this on Craigslist for Atlanta today. I emailed the guy, but still no response yet. http://atlanta.craigslist.org/car/62675687.html Hope this helps. Wait - here is the same thing on eBay - this is from the same guy: http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW Last edited by shifty; 03-07-2005 at 06:03 PM.

03-07-2005, 03:00 PM	#23
Putter More Cowbell.... Join Date: Mar 2004 Location: Puckett, MS Posts: 3,569	I just noticed it is a non-A/C truck, but you have the glovebox liner for a truck WITH A/C. Noth hurting anything, but you lost a little storage space. On a happier note, that is one good looking truck. __________________ *There once was a member from Puckett.....Who ( fill in the blank blank blank* ) bucket**

03-07-2005, 03:01 PM	#24
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Thanks, Putter. I would like to steal the A/C from another truck, if possible. A/C is on the list of things to buy in the future. This thing came with nothing No PS No PB No A/C No tilt But best of all - no excessive rust It sure did come with a lot of miles though :p

03-07-2005, 03:12 PM	#25
Putter More Cowbell.... Join Date: Mar 2004 Location: Puckett, MS Posts: 3,569	Sounds like my '69 that I got from Grandpa. Same color as yours and same options....NONE. __________________ *There once was a member from Puckett.....Who ( fill in the blank blank blank* ) bucket**

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