Headers for a 68' Bigblock? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ap2002 · 04-10-2009, 08:25 AM

i am wanting to redo my whole exhaust, i am NOT looking for quality/performance, i just want to get rid of the ugly manifolds that are on there.... plus i want to go to 2.5" dual pipe instead of 2.25" that it currently has... i just want to make sure i get the right fitment ones since the 454 did not come on a 68, i saw some longtubes on summit from $80-$160 will those work?

thanks...

Tmiller · 04-10-2009, 08:51 PM

Just make sure your frame brakets for the motor mounts are for the big block. I found out the hard way that there is clearance issues with the long tube headers.

**clay68c10** · 04-11-2009, 01:38 AM

Look up headers for a 68 with a 396, the external dimensions on all non-big truck BBC motors are the same.

ap2002 · 04-11-2009, 09:45 AM

thanks for the info guys...

1970ChevyChamp · 03-21-2012, 01:52 AM

Quote:

Originally Posted by Tmiller

Just make sure your frame brakets for the motor mounts are for the big block. I found out the hard way that there is clearance issues with the long tube headers.

What did you have to do to solve this issue? I am having the same issue with my '68. I just dropped in a 454 and the manifolds are hitting the frame rails before the motor mounts drop into place. Any help would be appreciated. Thanks

Shyguy · 03-21-2012, 09:59 AM

When we put the '73 454 in my '71 we had to use the motor mounts that were on the '73 motor to get the clearance for the headers.

I bought the headers used, but they are Hookers and look like comps.

1970ChevyChamp · 03-21-2012, 10:15 AM

The 454 I have orginally came out of a '79 one ton and it has the newer style motor mounts on it. My '68 c30 had a small block 400 in it, so I just put the small block motor mounts on the big block. I have done some reading on here that some guys have bought the big block towers to replace the small block ones, but when I ran into this problem I assumed it was just the wrong manifolds for the style of truck. So I called Summit Racing and talked to a tech guy and he said that Hedman Headers makes a header for a a 1968 c30 with a big block engine swap.

CC69Rat · 03-21-2012, 10:35 AM

69 model 396, 73+ K member swap, custom fabbed lower frame mounts, $269 Flowtechs.

04-10-2009, 08:25 AM	#1
ap2002 Registered User Join Date: Apr 2008 Location: Houston, TX Posts: 247	Headers for a 68' Bigblock? i am wanting to redo my whole exhaust, i am NOT looking for quality/performance, i just want to get rid of the ugly manifolds that are on there.... plus i want to go to 2.5" dual pipe instead of 2.25" that it currently has... i just want to make sure i get the right fitment ones since the 454 did not come on a 68, i saw some longtubes on summit from $80-$160 will those work? thanks... __________________ 1971 C-10 SWB - LS swap w/4L60e, 20x8.5front 20x12rear, 1968 C-10 SWB - 454 BB TH350 -Gone!

04-10-2009, 08:51 PM	#2
Tmiller slims 68 Join Date: Apr 2007 Location: Marshall Mi Posts: 55	Re: Headers for a 68' Bigblock? Just make sure your frame brakets for the motor mounts are for the big block. I found out the hard way that there is clearance issues with the long tube headers. __________________ 68 c10 LWB, blown 454 , 550 hp & 600 tq est. 06 Chevy Cobalt SS supercharged 2.0L 08 Chevy silverado crew cab 1/2 ton 2wd 5.3L, she wont let me put a supercharger on it.

04-11-2009, 01:38 AM	#3
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,979	Re: Headers for a 68' Bigblock? Look up headers for a 68 with a 396, the external dimensions on all non-big truck BBC motors are the same. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

04-11-2009, 09:45 AM	#4
ap2002 Registered User Join Date: Apr 2008 Location: Houston, TX Posts: 247	Re: Headers for a 68' Bigblock? thanks for the info guys... __________________ 1971 C-10 SWB - LS swap w/4L60e, 20x8.5front 20x12rear, 1968 C-10 SWB - 454 BB TH350 -Gone!

03-21-2012, 09:59 AM	#6
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: Headers for a 68' Bigblock? When we put the '73 454 in my '71 we had to use the motor mounts that were on the '73 motor to get the clearance for the headers. I bought the headers used, but they are Hookers and look like comps. __________________ '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.

03-21-2012, 10:15 AM	#7
1970ChevyChamp Registered User Join Date: Dec 2011 Location: Madison, Kansas Posts: 102	Re: Headers for a 68' Bigblock? The 454 I have orginally came out of a '79 one ton and it has the newer style motor mounts on it. My '68 c30 had a small block 400 in it, so I just put the small block motor mounts on the big block. I have done some reading on here that some guys have bought the big block towers to replace the small block ones, but when I ran into this problem I assumed it was just the wrong manifolds for the style of truck. So I called Summit Racing and talked to a tech guy and he said that Hedman Headers makes a header for a a 1968 c30 with a big block engine swap.

03-21-2012, 10:35 AM	#8
CC69Rat Registered User Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,210	Re: Headers for a 68' Bigblock? 69 model 396, 73+ K member swap, custom fabbed lower frame mounts, $269 Flowtechs. Attached Images __________________ 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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