![]() |
|
![]() |
#1 |
Registered User
Join Date: Apr 2009
Location: Edmonton, Alberta
Posts: 279
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Cool!
|
![]() |
![]() |
![]() |
#2 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,844
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Interesting build. This I want to see!!
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Once I had the HVAC unit out of the GMC carcass I proceeded to do a magic swap.
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
And then I finished the swap. This was just for s and g's. I wanted to study the initial fit of the IH floor and firewall before I started cutting on the GMC floor/firewall. I'm ready for bed. Not bad for 1 guy and no brains or brawn... or hoist... or crane... or help.
![]() |
![]() |
![]() |
![]() |
#5 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Give yourself a little more credit
![]() It's looking great. I'm really diggin' it.
__________________
Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
![]() |
![]() |
![]() |
#6 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Oh man! Subscribed! I love builds like this!
![]()
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Here's a teaser shot from last night. I slapped a front fender on so I could visualize some of the fore/aft position issues. The cab is sitting at least 3" and perhaps as much as 5" higher in these photos because it's up on blocks.
I'll probably end up putting the firewall of the cab another 3" forward and shifting the front wheel farther back in the wheel well opening of the fender. Where it is now is almost exactly where I would leave it if I never planned on shortening the front. But from the very start I wanted to change the look of the factory truck so I'm still heading in that direction. With the cab farther forward the stock fender will look stupid with the wheel so far off center of the opening, but then I will do the sectioning of the fenders and hood to shorten them up. ...sigh... but first I gotta get the GM floor pan and firewall rough cut, the IH cab floor and firewall cut out and the two pieces married up. Last edited by sparkydog; 03-30-2010 at 03:13 PM. |
![]() |
![]() |
![]() |
#8 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
I can't wait to see more!
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Note to self - check coolant leak
When I got the GMC firewall off the frame I noticed the signs of a coolant leak on the back of the left head on the motor. Anyone got an opinion of how serious that is? Intake man gasket or worse?
|
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Mar 2008
Location: Waukee, Iowa
Posts: 1,608
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Intake gasket. All the 5.7 vortecs do that...
__________________
build threads: 86 Suburban 88 Jeep 6.0 swap 49 Chevy truck 54 Chevy wagon 86 Suburban lowered 4/6 54 Chevy wagon 49 Chevy/s10 mix 88 Jeep Wrangler rockcrawler |
![]() |
![]() |
![]() |
#11 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,844
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
![]() Heck dang near every semi modern Chevy Small block has had that issue, until a real gasket is put in place.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
![]() |
![]() |
![]() |
#12 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
It also happens from never changing out the dexcool. It's becomes corrosive to gaskets after it's reached it's lifespan.
__________________
Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Thanks for the gasket opinions! I know (or at least expect) that I will have some maintenance issues with the GM chassis once I get to the point of trying to run it. I'm even prepared for the motor or tranny to be shot. At this point I want to try to stay focused on transplant tasks and leave the GM repair/maintenance for later. Sounds like I can add this item to the "to do" list and work it later.
![]() |
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Dec 2009
Location: Laveen, AZ
Posts: 69
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Cracking project, Sparky ... I'm sticking around, this'll be legendary to watch ...
Have you seen the Trucks TV show where they're transplanting a 70s Ford body on a Ram 2500 chassis? -Steve
__________________
1969 Chevrolet 4x4 C10 Pickup |
![]() |
![]() |
![]() |
#15 | |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Quote:
![]() Last edited by sparkydog; 06-27-2010 at 04:38 PM. |
|
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
OK next installment: these next posts took me a total of about 3.5 hours to accomplish. And in my 20's or 30's I could have done this stuff and then gone out and partied like a rock star. But now at 51 I had to take 2 Aleve and guzzle a couple of Margaritas just to make the pain in my wrists and fingers go away after all the sawzall and disk cutter time.
So to start with, on Wed and Thurs night I moved the IH cab unit up to the back of the GMC frame to make way for the re-install of the GMC floor pan. On Thurs night I marked off the GMC floor pan for the cuts and today I shaved the floor and firewall. |
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Had a little excitement when the freshly cut floor and firewall decided to make a break for freedom.
Got the horses back in the barn, then sanded all the cut edges and then stuffed the GMC floor pan back where it belongs and put the shock mounts back under it. |
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Next I solved a lot of my cowl and floor rot problems on the IH cab (by cutting them off hah!). I'm extra glad I chose to go this route because after I cut open the front cowl and firewall of the IH I discovered "the sarcophagus" inside the IH cab rocker panels. Here are some before and after pics. This does not include the 4lbs of dirt and rust that shook out into my face, ears and eyes while I lay on my back cutting this stuff open.
Last edited by sparkydog; 04-05-2010 at 12:27 PM. |
![]() |
![]() |
![]() |
#19 |
Registered User
Join Date: Jun 2007
Location: Saskatoon, Saskatchewan,:
Posts: 2,901
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Looking good! I have a soft spot for the old BINDERS! I got a 79 Scout Ralley II, mom and dad bought it new. One day i will get to it.
__________________
James 1968 GMC "HAVOC" 1986 GMC "Frank" J.J.R.H. Design & Consulting My 68`Rebuild "HAVOC": http://67-72chevytrucks.com/vboard/s...d.php?t=316300 A 58' chev build thread: http://www.67-72chevytrucks.com/vboa...d.php?t=311238 1969 Camaro Pro Touring http://67-72chevytrucks.com/vboard/s...61#post3513361 Swiss Cheese: http://67-72chevytrucks.com/vboard/s...d.php?t=384390 Adjustable Trailing Arm How-To: http://67-72chevytrucks.com/vboard/s...d.php?t=321100 1968 Ford Farm Truck: http://67-72chevytrucks.com/vboard/s...=1#post6555587 |
![]() |
![]() |
![]() |
#20 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Very cool!
Some friendly advice? In case you weren't planning on doing this, I'd set the cab in place (out of the way) and fully mount the bed the way you want it (wheel well centered, bed height, etc...). That way, you don't accidentally mount the cab "too low" and have to raise the bed floor, that is, if you didn't want to do that. Just offering up an idea. It's looking great ![]()
__________________
Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 03-27-2010 at 12:15 AM. |
![]() |
![]() |
![]() |
#21 | |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Quote:
However I am not going to mount up the bed just yet. That is because I already know I have to section it about 15-20 inches (lengthwise) and I'm just tired of cutting right now. So I am going to revert to "SuperEngineer" and just measure all the stackups on the bed and transfer over to the cab. Then I may go a little bit lower on the cab - I can always shim it back higher if the bed comes out different than what I measure. Thanks for watching my back on the build Redneck! Last edited by sparkydog; 03-27-2010 at 12:34 AM. |
|
![]() |
![]() |
![]() |
#22 |
Redneck Hillbilly
Join Date: Jan 2010
Location: Backwoods
Posts: 1,307
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
I'm not yet through reading page 2 and I am hooked. Very cool project from what I read. I've got to leave my computer so I'm subscribing and bookmarking so I don't forget to finish when I get back around.
![]() |
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Thanks! Hope you enjoy the rest of the story!
|
![]() |
![]() |
![]() |
#24 |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
The tranny is out and on the floor. No dents, no blood and no bruises! But I am too old for all that crawling around on the ground.
|
![]() |
![]() |
![]() |
#25 | |
Registered User
Join Date: Feb 2010
Location: Fallbrook, CA
Posts: 910
|
Re: Halfbreed - GMC Z71 + IH Extd Cab
Quote:
When I do all this stack-up, it says that "on paper" the lip of the bed would end up .6" lower than the corner of the rocker panel (not the bottom of the flange lip which I don't consider the visual bottom of the cab). What that means in English is if I want to be "perfect" I should drop the IH cab body .6" (call it .75") around the GMC floorpan. Now dropping the body is extra work compared with just laying the remnants of the IH floor onto the GM floor in a simple lap joint. Not too much extra but extra none the less. The other choice is to just spacer the IH bed .6" higher over the frame and call it good. Hmmm, decisions, decisions. If it had been a bigger difference, like 1 or 2 inches then I would do it for sure because I want a low ride stance and will plan to use an aftermarket lowering kit. But .6" is right at the ragged edge of being worth it. Last edited by sparkydog; 03-28-2010 at 11:06 AM. |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|