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#1 |
Registered User
Join Date: Jun 2017
Location: Mentor, OH
Posts: 132
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1968 GMC Short Bed Stepside Exhaust 250 Inline
Hello Everyone...
I am looking to replace the stock exhaust on my 1968 GMC short bed stepside that has an in-line 250 motor. Is there a company that makes the entire exhaust system as a package? I know LMC has a kit but I've heard they are not the easy bolt on kit they say it is. I know if a couple of local shops that can make it but one wants $450 and the other one is booked until end of August. Thanks for you help! |
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#2 |
Senior Member
![]() Join Date: Dec 1999
Location: TX
Posts: 1,569
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
Walker Exhaust has all the pieces:
https://www.walkerexhaust.com/find-my-part.html Select your vehicle and then it shows you all the parts to make a whole system. Walker 48111 looks like the main front pipe. Not sure how it fits. Found this webpage where a guy says he bought it: https://lugnutz65chevystepside.weebl...chives/01-2015 |
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#3 |
Senior Member
![]() Join Date: Mar 2019
Location: Herculaneum MO (20 minutes south of St. Louis
Posts: 613
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
Personally if it were me I would take it to the shop pay the $450 and consider it money well spent. I hate doing exhaust work and for that price it's not worth the hassle to do it yourself. And it will be a hassle.
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67 C10 283 T5 swapped longbed fleetside = wife's daily driver 67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck 67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD 72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck Can you tell we are fans of longbed fleetsides & 67s Chris |
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#4 | |
Registered User
Join Date: Jun 2017
Location: Mentor, OH
Posts: 132
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
I actually emailed Walker and they said they don't carry it. They told me to check with Holley and Magnaflow. Neither one of them carry it either.
Quote:
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#5 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,149
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
https://waldronexhaust.com/product-c...vy-gmc-trucks/
I used these guys for a Mustang and was very pleased with the fit. I had them put on and he said they went on easy. They do offer the 6-cyl.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#6 | |
Registered User
Join Date: Aug 2007
Location: Redwood City, CA
Posts: 1,177
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
Quote:
http://67-72chevytrucks.com/vboard/s...d.php?t=836212
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66 GMC Suburban Custom 66 Chevy K10 Suburban |
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#7 | |
Registered User
Join Date: Apr 2022
Location: Moorpark, CA
Posts: 755
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
Quote:
IMHO if you can turn a wrench for $180 the LMC would be a straightforward install. The clamps and straps pictured mirror what mine look like https://www.lmctruck.com/1967-72-che...xhaust-systems Like any old exhaust clamps/bolts use penetrating oil on them a few times before removal. IDK if the LMC kit includes a new donut gasket, but they are cheap so replace that also |
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#8 |
Registered User
![]() Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
If you were closer, I have a complete I6, 250 exhaust. Manifold to tailpipe, I'd give you. I just took it off my 67 swb for an LS swap.
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Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet *Sold* 1985 Silverado Short Fleet *Sold* 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride) |
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#9 | |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,255
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
Quote:
I have an Offenhauser aluminum intake and some 1978 Clifford headers. I ran a Holley 4160 R8007, 390 CFM 4V for 25 years, but retired it after an engine rebuild. Now I run an Edelbrock 1404 500 CFM 4V. See www.12-Bolt.com for more HiPo L6 goodies. My exhaust system is more complicated -- the headers are 3 into 2 -- so one collector picks up the first 3 cylinders and diverts right. The other picks up 4-5-6 and turns left. Just aft of the transmission, there is a crossover connector pipe. It's on an angle like an '' N '' to parallel the distance between the 1st and 2nd collectors. 1-7/8'' pipes run further aft thru Turbo mufflers and bend outboard exiting behind the rear tires. After installing headers, I had a shop do the exhaust pipe work. It was in the '80s, so prices would not reflect the current market, even if I could remember...
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 07-27-2022 at 04:32 AM. |
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#10 |
Registered User
Join Date: Dec 2020
Location: Joggins Nova Scotia
Posts: 1,598
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Re: 1968 GMC Short Bed Stepside Exhaust 250 Inline
hi,i with regards to your exhaust problem,a while ago,i was on the hunt for exhaust pieces for my 72 big block truck,none to be found at all the regular places,Napa,Carquest and so on.i went to the only muffler shop in town and they have a bender but nobody able to use it.frustrating as can be since i know how to run a bender after spending years in a muffler shop when i was a kid doing bender work 100% of my time,the other guys did the stock systems.i emailed Walker,only to find out what you did,they no longer make the pieces,so i called Waldron's in Michigan and as always,they came through with new 2 1/4 tailpipes and i made a pair of front pipes and used a set of the correct length mufflers with the correct inlet and outlet sizes.this is the second time i've used Waldrons' and have been very happy with their stuff,very well made,heavy pipe and it will fit.take care
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