Keeping the straight six! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wannabelow68 · 01-11-2011, 01:14 AM

Hey guys, most people go for the 350s or big blocks in there trucks(not that theres anything wrong with that) but i want to be a little different. I have a lowered 68 and i havent seen very many with the original sixs in them. I guess there is a reason for them becasue im having trouble finding some parts for my 250. My question is how many people worked there 250s and what did you do?

PS. when i bought the truck it already had a clifford intake manifold, holly 390 carb, possibly cammed(previous owner didn't know), full exhaust and HEI ignition. Any help at all would be appreciated

**LockDoc** · 01-11-2011, 01:25 AM

-
This has an inline 6 in it...

http://www.67-72chevytrucks.com/vboa...d.php?t=371612

LockDoc

Rooster's 67 · 01-11-2011, 01:27 AM

And in general what parts are you looking for? seems to already have a nice warm up on it.

Clifford,cam?,holly, HEI what more ya need?

**70cst** · 01-11-2011, 01:46 AM

Quote:

Originally Posted by wannabelow68

Hey guys, most people go for the 350s or big blocks in there trucks(not that theres anything wrong with that) but i want to be a little different. I have a lowered 68 and i havent seen very many with the original sixs in them. I guess there is a reason for them becasue im having trouble finding some parts for my 250. My question is how many people worked there 250s and what did you do?

PS. when i bought the truck it already had a clifford intake manifold, holly 390 carb, possibly cammed(previous owner didn't know), full exhaust and HEI ignition. Any help at all would be appreciated

There is nothing wrong with keeping your six 6 banger. The great things about these trucks is keeping their individuality. It's not what's under the hood that makes these trucks rock...It's thier design.

wannabelow68 · 01-11-2011, 03:39 AM

Quote:

Originally Posted by Rooster's 67

And in general what parts are you looking for? seems to already have a nice warm up on it.

Clifford,cam?,holly, HEI what more ya need?

well im gonna figure out if it has a cam or not soon. just gotta see how much vaccum its pulling and see if a better tech can give me there opinon. im getting a 700r4 built for it now i wanna see how much the extra gears help it but im looking really for general parts cites for the inlines. I need to tear into it soon and im having trouble finding pistons/rings etc. Also im looking for a new valve cover, i think im gonna attempt to make one soon but i would like to see some others if i could.

Dave

68lwb292 · 01-11-2011, 06:44 AM

Check out Napa they can order anything you need it just takes a little work on their end to look up the parts. I've also seen rebuild kits on Ebay. I bought a kit last year from Napa with ring, rod and main bearings and full gasket kit for $160.00. Its not factory GM but everything fit like it was supposed to, and no issues as of yet but I haven't ran the motor yet so I cant report on durability. Just be sure to tear down first to make sure of the crank and bore measurements. Have fun!

PanelDeland · 01-11-2011, 06:58 AM

There are several threads on hopping up the 6.You may want to check them out,especially if you are about to rebuild.Swapping pistons can increase the comp ratio and add power.IIRC it's a 307 piston that fits or the ones for an LP conversion bring it up.

Cliffords and Langdons are two of the major suppliers of 6 cyl parts.

Sport/Truck · 01-11-2011, 08:00 AM

I think if I do it again I'd go with a I-6. The ones I've seen on here are just beautiful

s/t

70 shorty · 01-11-2011, 09:23 AM

You've got the basics already covered on your 6. Another possibilty is porting the head. All of the above has been done to my 250, and I love it for being something different than the "I'm gonna yank out that 6 and put in a 350" crowd. Yeah, I could probably go faster easier with a 350, or any V8, but if I want to go fast, I just drive my Vette.

Shyguy · 01-11-2011, 11:09 AM

If I had a choice between a L6 and a V-8, I would pick the L6. They are great little engines.

Many people have them in their trucks on this forum. I have one in a '67 swb stepper with the old 4 speed and really like driving it even it if is just plain as heck.

bosco200 · 01-11-2011, 12:10 PM

I love my straight 6 I cant wait to tear into it.

54blackhornet · 01-11-2011, 01:09 PM

Put a 292 in it, a lot of the 250 parts that you have will swap over to the bigger block, lot more torque and it will be unique...

292farmer · 01-11-2011, 08:34 PM

boo yah!! and another v8 swap bites the dust!

lol good job on keeping the six, i got a 292 and love it.
i don't know if you got the 700r4 already if not. im told the 200r has a better spacing of gears that suits the inline 6's better, might be something you'll want to look into.

Hubscrub · 01-11-2011, 08:59 PM

very proud you are keeping the 6 i wish sometimes i would have kept mine in instead of the 350

orangek5 · 01-11-2011, 09:19 PM

CHECK OUT THIS THREAD!

http://67-72chevytrucks.com/vboard/s...d.php?t=276823

50bomb · 01-11-2011, 09:19 PM

I would have kept the straight 6 in my 67 c10 lwb but whoever owned it in the past yanked it out. So I got a good deal on a rebuild 350/350. Good Job keeping it Original.

**Boog** · 01-11-2011, 09:47 PM

And straight 6's can be dressed up to look real good too. If you do a little search for N2BILLET you will find his 68 with a real nice 6. Air cleaner, valve cover, tappet covers,etc. One of the nicest looking inliners you'll find.
I've never been a 6 guy but I do like the stump pulling torque and great sound of one with a split manifold and twice pipes out the back. Sweeeet.

wannabelow68 · 01-11-2011, 10:46 PM

Quote:

Originally Posted by 292farmer

boo yah!! and another v8 swap bites the dust!

lol good job on keeping the six, i got a 292 and love it.
i don't know if you got the 700r4 already if not. im told the 200r has a better spacing of gears that suits the inline 6's better, might be something you'll want to look into.

Yea ive done a little research on better fits and ive heard the same but i actually got the 700 for free and im getting it built for cheap and by a very respectable builder. But thanks you for your help!!!

292farmer · 01-11-2011, 10:51 PM

im the same way, cheaper and free sometimes is the way to go, may not always work the best. but keeps my wallet, bills and the wife happy. good luck!

01-11-2011, 01:14 AM	#1
wannabelow68 Registered User Join Date: Sep 2010 Location: bucks county Posts: 18	Keeping the straight six! Hey guys, most people go for the 350s or big blocks in there trucks(not that theres anything wrong with that) but i want to be a little different. I have a lowered 68 and i havent seen very many with the original sixs in them. I guess there is a reason for them becasue im having trouble finding some parts for my 250. My question is how many people worked there 250s and what did you do? PS. when i bought the truck it already had a clifford intake manifold, holly 390 carb, possibly cammed(previous owner didn't know), full exhaust and HEI ignition. Any help at all would be appreciated __________________ 1968 Chevy c10. CPP drop and disc brake conversion. straight six 250/powerglide. YUP!!! truck club

01-11-2011, 01:25 AM	#2
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,367	Re: Keeping the straight six! - This has an inline 6 in it... http://www.67-72chevytrucks.com/vboa...d.php?t=371612 LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

01-11-2011, 01:27 AM	#3
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	Re: Keeping the straight six! And in general what parts are you looking for? seems to already have a nice warm up on it. Clifford,cam?,holly, HEI what more ya need?

01-11-2011, 06:44 AM	#6
68lwb292 Ex-Minitrucker Join Date: Apr 2009 Location: Bushnell, FL Posts: 301	Re: Keeping the straight six! Check out Napa they can order anything you need it just takes a little work on their end to look up the parts. I've also seen rebuild kits on Ebay. I bought a kit last year from Napa with ring, rod and main bearings and full gasket kit for $160.00. Its not factory GM but everything fit like it was supposed to, and no issues as of yet but I haven't ran the motor yet so I cant report on durability. Just be sure to tear down first to make sure of the crank and bore measurements. Have fun! __________________ 68 C10 LWB 292 4spd 68 C10 LWB 250 3spd

01-11-2011, 06:58 AM	#7
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: Keeping the straight six! There are several threads on hopping up the 6.You may want to check them out,especially if you are about to rebuild.Swapping pistons can increase the comp ratio and add power.IIRC it's a 307 piston that fits or the ones for an LP conversion bring it up. Cliffords and Langdons are two of the major suppliers of 6 cyl parts. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

01-11-2011, 08:00 AM	#8
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: Keeping the straight six! I think if I do it again I'd go with a I-6. The ones I've seen on here are just beautiful s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-11-2011, 09:23 AM	#9
70 shorty Where's my beer? Join Date: Oct 2004 Location: Glen Allen, VA Posts: 1,768	Re: Keeping the straight six! You've got the basics already covered on your 6. Another possibilty is porting the head. All of the above has been done to my 250, and I love it for being something different than the "I'm gonna yank out that 6 and put in a 350" crowd. Yeah, I could probably go faster easier with a 350, or any V8, but if I want to go fast, I just drive my Vette. __________________ 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

01-11-2011, 11:09 AM	#10
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: Keeping the straight six! If I had a choice between a L6 and a V-8, I would pick the L6. They are great little engines. Many people have them in their trucks on this forum. I have one in a '67 swb stepper with the old 4 speed and really like driving it even it if is just plain as heck. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

01-11-2011, 12:10 PM	#11
bosco200 Registered User Join Date: Dec 2009 Location: Ste. Genevieve, MO Posts: 526	Re: Keeping the straight six! I love my straight 6 I cant wait to tear into it.

01-11-2011, 01:09 PM	#12
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,279	Re: Keeping the straight six! Put a 292 in it, a lot of the 250 parts that you have will swap over to the bigger block, lot more torque and it will be unique...

01-11-2011, 08:34 PM	#13
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: Keeping the straight six! boo yah!! and another v8 swap bites the dust! lol good job on keeping the six, i got a 292 and love it. i don't know if you got the 700r4 already if not. im told the 200r has a better spacing of gears that suits the inline 6's better, might be something you'll want to look into. __________________ 1972 gmc c25 292/sm465 dana 60 w/5.13s 1973 vw super beetle 1600cc/4spd(baja bug) 1974 chevy c60 351v6/np-540+2 speed eaton rear 2005 chevy cobalt 2.2l

01-11-2011, 08:59 PM	#14
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: Keeping the straight six! very proud you are keeping the 6 i wish sometimes i would have kept mine in instead of the 350 __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

01-11-2011, 09:19 PM	#15
orangek5 Registered User Join Date: Nov 2008 Location: Rose Hill Ks Posts: 290	Re: Keeping the straight six! CHECK OUT THIS THREAD! http://67-72chevytrucks.com/vboard/s...d.php?t=276823 __________________ 1970 Jimmy 4x4 IL6 1971 Jimmy 4x4 350ci v8 1971 SWB 327ci v8 1972 Short Stepside 305ci v8 1972 Blazer 2WD CST LS9 350ci 4sp 1999 4 Door LB 1 Ton Old Body Style 5.7 v8

01-11-2011, 09:19 PM	#16
50bomb Registered User Join Date: Jul 2010 Location: Hemet,Ca Posts: 1,502	Re: Keeping the straight six! I would have kept the straight 6 in my 67 c10 lwb but whoever owned it in the past yanked it out. So I got a good deal on a rebuild 350/350. Good Job keeping it Original.

01-11-2011, 09:47 PM	#17
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,030	Re: Keeping the straight six! And straight 6's can be dressed up to look real good too. If you do a little search for N2BILLET you will find his 68 with a real nice 6. Air cleaner, valve cover, tappet covers,etc. One of the nicest looking inliners you'll find. I've never been a 6 guy but I do like the stump pulling torque and great sound of one with a split manifold and twice pipes out the back. Sweeeet. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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01-11-2011, 10:51 PM	#19
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: Keeping the straight six! im the same way, cheaper and free sometimes is the way to go, may not always work the best. but keeps my wallet, bills and the wife happy. good luck! __________________ 1972 gmc c25 292/sm465 dana 60 w/5.13s 1973 vw super beetle 1600cc/4spd(baja bug) 1974 chevy c60 351v6/np-540+2 speed eaton rear 2005 chevy cobalt 2.2l

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