Headers Install clearance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

glider_6969 · 01-17-2010, 09:24 PM

Installing headers on a 350 for 68 gmc, (they are full length) can anyone tell me if they have had trouble with location of the bellcrank(Z bar) or any of the clutch linkage. Will I have to mod or move anything. The truck originally had a 250 engine in it. Any help would be great.

69 longhorn · 01-18-2010, 01:30 AM

Yes, if you are using the I6 frame stands,things will be different. What brand headers do you have?

glider_6969 · 01-18-2010, 09:56 PM

Quote:

Originally Posted by 69 longhorn

Yes, if you are using the I6 frame stands,things will be different. What brand headers do you have?

What do you mean by frame stands ? Do you mean the frame bracket for the bell crank? Hedman Headers.

Blackbird66 · 01-18-2010, 10:01 PM

I have headers from summit racing, don't know who makes them for summit. I have no fitment issues with them. They are a little tight hear and there, and require removal of the starter to install.

glider_6969 · 01-18-2010, 10:18 PM

Hey Blackbird, are yours black. I ones that I am getting are also from Summit.

glider_6969 · 01-18-2010, 10:20 PM

Summit part # Sum-G9006

Jacfourteen · 01-18-2010, 11:09 PM

I have a 350 in a 68 gmc, mounted in the 6 cyl location on the I6 stands. I'm using some cheap full length flowtechs (said they fit 67-87 chevy/gmc) that I got at O'reiley's and I had no clearance issues.

Jacfourteen · 01-18-2010, 11:12 PM

forgot to mention that I have the stock granny 4-speed. I have enough clearance that last time I pulled the engine I left them bolted to the motor and pulled them out with it with no problems.

Blackbird66 · 01-19-2010, 05:00 AM

I have run these since around '01 so I have no idea what the part # is, but if they are summit brand, I'm sure they have not changed.

glider_6969 · 01-19-2010, 10:14 PM

The frame mounts have been moved back so the motor is now close to the firewall, I guess I'll have to wait and see when the headers come. As many projects go if they were easy it wouldn't be right. Thanks for all the info guys.

01-17-2010, 09:24 PM	#1
glider_6969 Registered User Join Date: Jan 2010 Location: Ontario Posts: 400	Headers Install clearance Installing headers on a 350 for 68 gmc, (they are full length) can anyone tell me if they have had trouble with location of the bellcrank(Z bar) or any of the clutch linkage. Will I have to mod or move anything. The truck originally had a 250 engine in it. Any help would be great.

01-18-2010, 01:30 AM	#2
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Re: Headers Install clearance Yes, if you are using the I6 frame stands,things will be different. What brand headers do you have? __________________ http://community.webshots.com/user/hotrodhorn

01-18-2010, 10:01 PM	#4
Blackbird66 Registered User Join Date: Feb 2008 Location: Shelbyville, KY Posts: 51	Re: Headers Install clearance I have headers from summit racing, don't know who makes them for summit. I have no fitment issues with them. They are a little tight hear and there, and require removal of the starter to install.

01-18-2010, 10:18 PM	#5
glider_6969 Registered User Join Date: Jan 2010 Location: Ontario Posts: 400	Re: Headers Install clearance Hey Blackbird, are yours black. I ones that I am getting are also from Summit.

01-18-2010, 10:20 PM	#6
glider_6969 Registered User Join Date: Jan 2010 Location: Ontario Posts: 400	Re: Headers Install clearance Summit part # Sum-G9006

01-18-2010, 11:09 PM	#7
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: Headers Install clearance I have a 350 in a 68 gmc, mounted in the 6 cyl location on the I6 stands. I'm using some cheap full length flowtechs (said they fit 67-87 chevy/gmc) that I got at O'reiley's and I had no clearance issues. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

01-18-2010, 11:12 PM	#8
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: Headers Install clearance forgot to mention that I have the stock granny 4-speed. I have enough clearance that last time I pulled the engine I left them bolted to the motor and pulled them out with it with no problems. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

01-19-2010, 05:00 AM	#9
Blackbird66 Registered User Join Date: Feb 2008 Location: Shelbyville, KY Posts: 51	Re: Headers Install clearance I have run these since around '01 so I have no idea what the part # is, but if they are summit brand, I'm sure they have not changed.

01-19-2010, 10:14 PM	#10
glider_6969 Registered User Join Date: Jan 2010 Location: Ontario Posts: 400	Re: Headers Install clearance The frame mounts have been moved back so the motor is now close to the firewall, I guess I'll have to wait and see when the headers come. As many projects go if they were easy it wouldn't be right. Thanks for all the info guys. Last edited by glider_6969; 01-19-2010 at 10:15 PM. Reason: error in typing



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