67 vs 68-72 4wd frame. What the difference? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Pont · 04-27-2002, 07:47 PM

I'm ready to buy headers for the BB in my 67 4x4. Obviously, no header manufacturer will list headers for this because they did not offer big blocks until 68. Is the 67 frame different and if so, will it have any affect on header clearance. I would rather not run block hugger headers if I don't have to.

Thanks for any help from you guys (or gals) that would know.

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67 SWB 4x4 - 396 BB / SM420 4 spd
8" lift / 15x14 Welds & 35X14.5 SSR's
Grants Pass, OR

*Fast68Chevy* · 04-27-2002, 08:28 PM

not sure but i think maybe even though 4x4 had no BB they stil made the bent up endges near engine mounts for when BB were installed, all a blazer frame is is a pickup frame shortened, nothing else different except at rear bumper, technically 64-up are all same in all actuality, only changes were at bumoer ends of rails and at the steering box part of frame

good luck

------------------
Randy- Lincoln, IL
randy@ccaonline.com 2177353230
-71 C-10 350/CH465/3.07, assemble it, yeah right, that'll happen in this world,(not)
-84 Z28 Camaro 5.0L 700R4, 3.73, beater, paid way too much for it like an idiot,,
-84 Firebird SE 2.8L T-5, rod knocking, dammit,,
-82 Firebird 350 4bolt (TBL)/TH350, not running, dammit...
buy/sell/hoard/trade most any GM vehicle parts of any kind
-parting out: '81 Cutlass Supreme Brougham
*Paint is overrated
© RSS Enterprises 2000

[This message has been edited by Fast68Chevy (edited April 27, 2002).]

**JIMs70GMC** · 04-27-2002, 08:29 PM

Does the BB sit in the same spot on a 2wd as it does on a 4wd? BBs were not available in 4wds between 67 and 72. That could pose a problem if you are trying to use headers for a 68-72 2wd and the block is not in the same spot on your 4wd.

------------------
1970 GMC K25 Custom
Chesapeake, VA
My 70 GMCor Webshots http://community.webshots.com/user/70gmc

*Fast68Chevy* · 04-27-2002, 08:31 PM

cant say for sure if engine sits in same place on 4x4 as in 4x2, because well 4x4 use a totally different engine cradle and different holes and everything.,

Pont · 04-27-2002, 08:49 PM

Well, some header manufacturers do list headers to fit 68-91 4wd 396-502. This is great if there is no difference in frame clearance from 67 to 68. The header that they list wil also fit 2wd from 68-87 pickups, blazers and subs. Hedman and Hooker are a couple that show them for these applications. Just gotta zero down whether or not my 67 frame is any different from the firewall forward.

------------------
67 SWB 4x4 - 396 BB / SM420 4 spd
8" lift / 15x14 Welds & 35X14.5 SSR's
Grants Pass, OR

**68SWB4x4** · 04-27-2002, 09:51 PM

no, it should be the same

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My Truck pictures

www.xframeimpala.com

68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET

Pont · 04-27-2002, 10:00 PM

Impster, Fast & Jims

Thanks for the help. Saves me from gambling on a set of headers then having to return them.

It's getting ceramic headers and Flowmasters (Delta 50 series). Should be done in a couple weeks. Thanks again for your help!

Rob

------------------
67 SWB 4x4 - 396 BB / SM420 4 spd
8" lift / 15x14 Welds & 35X14.5 SSR's
Grants Pass, OR

**68SWB4x4** · 04-28-2002, 02:59 AM

dude send me some the money..... this aint fair i remember when we were both at about the same point of the buildup, your pulling to far ahead!

------------------
My Truck pictures

www.xframeimpala.com

68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET

**GMCPaul** · 04-28-2002, 05:10 AM

Even though the BB was not used in 4wd's from 1968 forward all frames 2wd or 4wd had a notch cut out of drivers side frame rail on top for clearance of BB exhaust, your 67 frame will not have this and unless you buy the tubes and custom make your headers or luckily find a set that can clear frame as it is you will need to notch the frame in this location. Since they were never any made specifically for these trucks with 4wd and BB I would look at a set of shorty headers with a rear exit as they should best suit your needs.
GMCPaul

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Online Catalog for-GMCPauls Truck Parts.com
67 LWB GMC SuperCustom Fleetside
67 LWB GMC Stepside
67 SWB GMC Stepside
67 SWB GMC Fleetside
67 SWB Chevy CST Fleetside
67 LWB Chevy CST Fleet
67 SWB Chevy Stepside
67 LWB Chevy Stepside
68 2wd Chevy 1/2 t. Panel
68 Chevy Panel 1/2Ton 4X4
68 LWB Chevy Fleet 4X4
69 SWB Chevy Stepside
71 GMC Suburban 402/400
72 LWB Chevy Camper Special
72 LWB Chevy Camper Special
Nope not a typo 2-72 Camper Specials
and no they are NOT FOR SALE MINE MINE MINE and we accept ALL 67 Refugees Looking For More Never Enough!!!

Pont · 04-28-2002, 02:06 PM

Impster, after I get done spending money on this project, and my 2wd project, I'll send you what I have left over (hehehehe).

GMCPaul, thanks for the good info. The way my truck is setup now, I have plenty of clearance on the drivers side for exhaust, however, the person who did the install of the BB in my truck before I bought it had notched the upper rail of the frame on the passenger side to clear the stock exhaust manifold. That is my major concern at this point. What your opinion on the shorty style header like for the Chevelle? Something half way between a full length header and a block hugger header. If I can get away with the half length headers, I would rather do that that run the block huggers.

------------------
67 SWB 4x4 - 396 BB / SM420 4 spd
8" lift / 15x14 Welds & 35X14.5 SSR's
Grants Pass, OR

LeRoy · 04-28-2002, 06:43 PM

I'm going with mid lenght headers when I do put my BB in the Blaz. As it sits now with the SB and full lenght headers. The guy who did the 2 1/2" exhaust had to do a hard 45 degree bend right after the collector on the drivers side so he could go above the t-case crossmember. With mid length this would be a much easier bend and wouldn't crimp the pipe so much. I've heard that headers for a early BB Chevelle are the ones to get

------------------
MOUNT VERNON, WASH. STATE
GOT MY BASES COVERED
-Big and bad 70 CST Blazer
-71 K5 Blazer, 350, 4spd, 2" lift, 35" BFG mudders, Camo,
-Work in progress 72 SWB
-72 Cheyenne, lwb, 1/2 ton, 4x4, V8, 4spd.
-71, 3/4 ton, 402/400, Custom Camper
-69, 2wd, ST6, auto, ghetto lowered, 3/4 ton, LWB, "BOMBER"
-69 Chev. short narrow 4x4
-69 Chev., lwb, utility trailer, 35" tires,
Add or Delete Daily

Pont · 04-28-2002, 06:53 PM

Leroy, have you seen these mid-length headers installed in our Chevy's with a BB? Or do you know of anyone who has used them? A little confirmation would be great before ordering. Any help would be appreciated.

------------------
67 SWB 4x4 - 396 BB / SM420 4 spd
8" lift / 15x14 Welds & 35X14.5 SSR's
Grants Pass, OR

04-27-2002, 07:47 PM	#1
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	67 vs 68-72 4wd frame. What the difference? I'm ready to buy headers for the BB in my 67 4x4. Obviously, no header manufacturer will list headers for this because they did not offer big blocks until 68. Is the 67 frame different and if so, will it have any affect on header clearance. I would rather not run block hugger headers if I don't have to. Thanks for any help from you guys (or gals) that would know. ------------------ 67 SWB 4x4 - 396 BB / SM420 4 spd 8" lift / 15x14 Welds & 35X14.5 SSR's Grants Pass, OR __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"

04-27-2002, 08:29 PM	#3
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Does the BB sit in the same spot on a 2wd as it does on a 4wd? BBs were not available in 4wds between 67 and 72. That could pose a problem if you are trying to use headers for a 68-72 2wd and the block is not in the same spot on your 4wd. ------------------ 1970 GMC K25 Custom Chesapeake, VA My 70 GMCor Webshots http://community.webshots.com/user/70gmc __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

04-27-2002, 08:49 PM	#5
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	Well, some header manufacturers do list headers to fit 68-91 4wd 396-502. This is great if there is no difference in frame clearance from 67 to 68. The header that they list wil also fit 2wd from 68-87 pickups, blazers and subs. Hedman and Hooker are a couple that show them for these applications. Just gotta zero down whether or not my 67 frame is any different from the firewall forward. ------------------ 67 SWB 4x4 - 396 BB / SM420 4 spd 8" lift / 15x14 Welds & 35X14.5 SSR's Grants Pass, OR __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"

04-27-2002, 09:51 PM	#6
68SWB4x4 Strongman Garage Join Date: Apr 2000 Location: Salinas, CA Posts: 10,241	no, it should be the same ------------------ My Truck pictures www.xframeimpala.com 68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET" 56 big window short stepside 235 dual 1 brls 64ImpalaSS 327 70 C10 LWB fleetside custom/10 350/TH350 IM me on aol SN= SHAGROLET __________________ Kalle 68 GMC Suburban 1500 4x4 SOLD 69 Pontiac Lemans 99 Silverado 4.8 5 speed ECSB [ Facebook Instagram Subscribe on YOUTUBE

04-27-2002, 10:00 PM	#7
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	Impster, Fast & Jims Thanks for the help. Saves me from gambling on a set of headers then having to return them. It's getting ceramic headers and Flowmasters (Delta 50 series). Should be done in a couple weeks. Thanks again for your help! Rob ------------------ 67 SWB 4x4 - 396 BB / SM420 4 spd 8" lift / 15x14 Welds & 35X14.5 SSR's Grants Pass, OR __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"

04-27-2002, 08:28 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	not sure but i think maybe even though 4x4 had no BB they stil made the bent up endges near engine mounts for when BB were installed, all a blazer frame is is a pickup frame shortened, nothing else different except at rear bumper, technically 64-up are all same in all actuality, only changes were at bumoer ends of rails and at the steering box part of frame good luck ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 -71 C-10 350/CH465/3.07, assemble it, yeah right, that'll happen in this world,(not) -84 Z28 Camaro 5.0L 700R4, 3.73, beater, paid way too much for it like an idiot,, -84 Firebird SE 2.8L T-5, rod knocking, dammit,, -82 Firebird 350 4bolt (TBL)/TH350, not running, dammit... buy/sell/hoard/trade most any GM vehicle parts of any kind -parting out: '81 Cutlass Supreme Brougham *Paint is overrated © RSS Enterprises 2000 [This message has been edited by Fast68Chevy (edited April 27, 2002).]

04-27-2002, 08:31 PM	#4
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	cant say for sure if engine sits in same place on 4x4 as in 4x2, because well 4x4 use a totally different engine cradle and different holes and everything.,

04-28-2002, 02:59 AM	#8
68SWB4x4 Strongman Garage Join Date: Apr 2000 Location: Salinas, CA Posts: 10,241	dude send me some the money..... this aint fair i remember when we were both at about the same point of the buildup, your pulling to far ahead! ------------------ My Truck pictures www.xframeimpala.com 68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET" 56 big window short stepside 235 dual 1 brls 64ImpalaSS 327 70 C10 LWB fleetside custom/10 350/TH350 IM me on aol SN= SHAGROLET __________________ Kalle 68 GMC Suburban 1500 4x4 SOLD 69 Pontiac Lemans 99 Silverado 4.8 5 speed ECSB [ Facebook Instagram Subscribe on YOUTUBE

04-28-2002, 05:10 AM	#9
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,718	Even though the BB was not used in 4wd's from 1968 forward all frames 2wd or 4wd had a notch cut out of drivers side frame rail on top for clearance of BB exhaust, your 67 frame will not have this and unless you buy the tubes and custom make your headers or luckily find a set that can clear frame as it is you will need to notch the frame in this location. Since they were never any made specifically for these trucks with 4wd and BB I would look at a set of shorty headers with a rear exit as they should best suit your needs. GMCPaul ------------------ Online Catalog for-GMCPauls Truck Parts.com 67 LWB GMC SuperCustom Fleetside 67 LWB GMC Stepside 67 SWB GMC Stepside 67 SWB GMC Fleetside 67 SWB Chevy CST Fleetside 67 LWB Chevy CST Fleet 67 SWB Chevy Stepside 67 LWB Chevy Stepside 68 2wd Chevy 1/2 t. Panel 68 Chevy Panel 1/2Ton 4X4 68 LWB Chevy Fleet 4X4 69 SWB Chevy Stepside 71 GMC Suburban 402/400 72 LWB Chevy Camper Special 72 LWB Chevy Camper Special Nope not a typo 2-72 Camper Specials and no they are NOT FOR SALE MINE MINE MINE and we accept ALL 67 Refugees Looking For More Never Enough!!! __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM

04-28-2002, 02:06 PM	#10
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	Impster, after I get done spending money on this project, and my 2wd project, I'll send you what I have left over (hehehehe). GMCPaul, thanks for the good info. The way my truck is setup now, I have plenty of clearance on the drivers side for exhaust, however, the person who did the install of the BB in my truck before I bought it had notched the upper rail of the frame on the passenger side to clear the stock exhaust manifold. That is my major concern at this point. What your opinion on the shorty style header like for the Chevelle? Something half way between a full length header and a block hugger header. If I can get away with the half length headers, I would rather do that that run the block huggers. ------------------ 67 SWB 4x4 - 396 BB / SM420 4 spd 8" lift / 15x14 Welds & 35X14.5 SSR's Grants Pass, OR __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"

04-28-2002, 06:43 PM	#11
LeRoy Registered truck nut Join Date: Dec 1999 Location: Mt. Vernon, Washington, USA Posts: 1,584	I'm going with mid lenght headers when I do put my BB in the Blaz. As it sits now with the SB and full lenght headers. The guy who did the 2 1/2" exhaust had to do a hard 45 degree bend right after the collector on the drivers side so he could go above the t-case crossmember. With mid length this would be a much easier bend and wouldn't crimp the pipe so much. I've heard that headers for a early BB Chevelle are the ones to get ------------------ MOUNT VERNON, WASH. STATE GOT MY BASES COVERED -Big and bad 70 CST Blazer -71 K5 Blazer, 350, 4spd, 2" lift, 35" BFG mudders, Camo, -Work in progress 72 SWB -72 Cheyenne, lwb, 1/2 ton, 4x4, V8, 4spd. -71, 3/4 ton, 402/400, Custom Camper -69, 2wd, ST6, auto, ghetto lowered, 3/4 ton, LWB, "BOMBER" -69 Chev. short narrow 4x4 -69 Chev., lwb, utility trailer, 35" tires, Add or Delete Daily __________________ MOUNT VERNON, WASH. STATE Need a part? Just PM me

04-28-2002, 06:53 PM	#12
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	Leroy, have you seen these mid-length headers installed in our Chevy's with a BB? Or do you know of anyone who has used them? A little confirmation would be great before ordering. Any help would be appreciated. ------------------ 67 SWB 4x4 - 396 BB / SM420 4 spd 8" lift / 15x14 Welds & 35X14.5 SSR's Grants Pass, OR __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"



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