'78 GMC SC 454/T400 long to short bed build - The 1947 - Present Chevrolet & GMC Truck Message Board Network

superchevy · 01-02-2021, 07:43 PM

restoring a nice '78 GMC Sierra Classic...plans are tu cut it down to a short bed, new paint, refresh the interior, reseal the 454, add tbi and a 4L80e...maybe some other mods. Here's a pic of it as found in the backyard of the original owner in San Antonio about 3 years ago...and back at my place.

superchevy · 01-02-2021, 07:48 PM

I traded the bed off it for a set of 67-68 buddy bucket seats.

superchevy · 01-02-2021, 07:53 PM

about 6 months ago I took the 78 to buddy's chassis shop, where we cut it down to a short bed.

superchevy · 01-02-2021, 08:02 PM

now it's Jan 2021 and time to build it...rolled into the shop...working on the rear of the truck first...I still need to trim off 5" of the rear of the frame so the short bed will fit...i did get the rear crossmember relocated forward...here's a pic of the 1" lift shackle...that's right, I'm going up instead of lower on this one....now for a new diff cover, brake lines ordered, new rear brakes, some paint

superchevy · 01-03-2021, 07:47 PM

Got a little done today...cut 5.25" off the rear frame rails so the short bed will fit ....removed the diff brake lines...waiting on new ones from inline tube...removed the 2 piece driveshaft and carried bearing support...removed an exhaust hanger that's in the way of relocating the rear fuel tank...

SCOTI · 01-08-2021, 11:53 AM

Quote:

Originally Posted by superchevy

now it's Jan 2021 and time to build it...rolled into the shop...working on the rear of the truck first...I still need to trim off 5" of the rear of the frame so the short bed will fit...i did get the rear crossmember relocated forward...here's a pic of the 1" lift shackle...that's right, I'm going up instead of lower on this one....now for a new diff cover, brake lines ordered, new rear brakes, some paint

Curious about this.... What brand did you use? Did the shackle fit the leaf properly?

superchevy · 01-09-2021, 06:01 PM

Hey SCOTI, not sure yet as haven't installed it yet. I've got to rebuild the front suspension and install some new front springs with coil spring spacers...I need to see what the front end height is before I do the rear....limited options on the front for 2wd

evan · 01-03-2021, 09:01 PM

Looks cool. How much did you take out of the center of the frame? 14"? Do you have any pictures of the inside of the weld? I'm thinking of trying the same thing and wondering about options for reinforcing it.

Edit: What I mean is, do you have any pictures of the inside of the frame where it was welded? Any more of the measuring/cutting process would be great too.

**Willowrun** · 01-03-2021, 11:53 PM

Interested in watching your progress.

LT7A · 03-09-2021, 05:58 AM

Might be messy, but it looks like you're winning.

superchevy · 03-09-2021, 09:37 PM

Decided to remove the lower control arm bushings this evening...the drill method is the easiest I've found...going to use Prothane bushings/sleeves, so keeping the existing shells in place...also sprayed down the spindles with oven cleaner to get some of the grease and oil off before blasting/painting.

superchevy · 03-11-2021, 09:19 PM

after soaking in EZ Off oven cleaner for 2 days, I got a chance to power wash some of the greasier front end parts this evening...sprayed on a little Gibbs to slow the flash rust on the machined surfaces...the Prothane control arm bushings showed today too...tomorrow press in the new MOOG ball joints...

superchevy · 03-13-2021, 08:41 AM

I got off work a little early yesterday and finally finished stripping down the front frame...got the brake/fuel lines off...got the steering gearbox off and the master cylinder/booster as well...goal this weekend is to finish cleaning the frame and paint it as well as media blasting a lot of the smaller parts and painting them

superchevy · 03-13-2021, 09:12 PM

Got the new MOOG ball joints pressed in the LCA's....also blasted and painted lots of small parts....tomorrow final clean/paint the front frame and then it's on to installing all the new parts!

LT7A · 03-14-2021, 09:56 AM

It's looking good. You're making quick work of it.

superchevy · 03-14-2021, 12:01 PM

Thank you. I try to do a little bit each day so things keep moving along.

superchevy · 03-14-2021, 05:36 PM

finally got the front half of the frame cleaned/scuffed/painted today...it's almost time to throw a bunch of new parts at this thing

superchevy · 03-16-2021, 07:40 PM

the view you have laying under the cab sanding the frame for paint....also, I've decided not to paint the bottom of the cab...I love the original red primer and overspray...there is so little rust...I'm just going to coat it with Gibbs Brand and leave it as is... not hiding anything on this clean ass truck

1981_c10 · 03-19-2021, 10:33 AM

love the progress!

LT7A · 04-07-2021, 08:09 AM

You do very nice work. Very clean installation.

superchevy · 04-10-2021, 05:41 PM

Thanks guys! Yes, this cab is soooo clean...

superchevy · 04-15-2021, 07:00 PM

ok, got some more brake work done...specifically finished running the new InLineTube hard lines front and rear...new brake booster and master cylinder installed...

superchevy · 04-15-2021, 07:02 PM

next up, the big block engine stands and new mounts installed...

superchevy · 04-15-2021, 07:06 PM

now, the fully restored a/c evap box ( from Tbe Parts Guy on eBay) could be installed...I used ac duct putty from Home Depot to seal the box against the firewall... you can see how I had to roll it out and set in the grove of the box...

2003z06 · 04-20-2021, 08:10 AM

So clean. Love the progress. What are you using to paint the frame and suspension parts?

01-02-2021, 07:43 PM	#1
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	'78 GMC SC 454/T400 long to short bed build restoring a nice '78 GMC Sierra Classic...plans are tu cut it down to a short bed, new paint, refresh the interior, reseal the 454, add tbi and a 4L80e...maybe some other mods. Here's a pic of it as found in the backyard of the original owner in San Antonio about 3 years ago...and back at my place. Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-02-2021, 07:48 PM	#2
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build I traded the bed off it for a set of 67-68 buddy bucket seats. Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-02-2021, 07:53 PM	#3
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build about 6 months ago I took the 78 to buddy's chassis shop, where we cut it down to a short bed. Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-02-2021, 08:02 PM	#4
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build now it's Jan 2021 and time to build it...rolled into the shop...working on the rear of the truck first...I still need to trim off 5" of the rear of the frame so the short bed will fit...i did get the rear crossmember relocated forward...here's a pic of the 1" lift shackle...that's right, I'm going up instead of lower on this one....now for a new diff cover, brake lines ordered, new rear brakes, some paint Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-03-2021, 07:47 PM	#5
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Got a little done today...cut 5.25" off the rear frame rails so the short bed will fit ....removed the diff brake lines...waiting on new ones from inline tube...removed the 2 piece driveshaft and carried bearing support...removed an exhaust hanger that's in the way of relocating the rear fuel tank... Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-09-2021, 06:01 PM	#7
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Hey SCOTI, not sure yet as haven't installed it yet. I've got to rebuild the front suspension and install some new front springs with coil spring spacers...I need to see what the front end height is before I do the rear....limited options on the front for 2wd __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

01-03-2021, 09:01 PM	#8
evan Registered User Join Date: Jul 2005 Location: SK, Canada Posts: 488	Re: '78 GMC SC 454/T400 long to short bed build Looks cool. How much did you take out of the center of the frame? 14"? Do you have any pictures of the inside of the weld? I'm thinking of trying the same thing and wondering about options for reinforcing it. Edit: What I mean is, do you have any pictures of the inside of the frame where it was welded? Any more of the measuring/cutting process would be great too. __________________ Evan B.

01-03-2021, 11:53 PM	#9
Willowrun Senior Member Join Date: Mar 2013 Location: Ann Arbor, MI Posts: 1,029	Re: '78 GMC SC 454/T400 long to short bed build Interested in watching your progress.

03-09-2021, 05:58 AM	#10
LT7A Registered User Join Date: Oct 2015 Location: PNW Posts: 3,619	Re: '78 GMC SC 454/T400 long to short bed build Might be messy, but it looks like you're winning.

03-09-2021, 09:37 PM	#11
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Decided to remove the lower control arm bushings this evening...the drill method is the easiest I've found...going to use Prothane bushings/sleeves, so keeping the existing shells in place...also sprayed down the spindles with oven cleaner to get some of the grease and oil off before blasting/painting. Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-11-2021, 09:19 PM	#12
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build after soaking in EZ Off oven cleaner for 2 days, I got a chance to power wash some of the greasier front end parts this evening...sprayed on a little Gibbs to slow the flash rust on the machined surfaces...the Prothane control arm bushings showed today too...tomorrow press in the new MOOG ball joints... Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-13-2021, 08:41 AM	#13
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build I got off work a little early yesterday and finally finished stripping down the front frame...got the brake/fuel lines off...got the steering gearbox off and the master cylinder/booster as well...goal this weekend is to finish cleaning the frame and paint it as well as media blasting a lot of the smaller parts and painting them Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-13-2021, 09:12 PM	#14
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Got the new MOOG ball joints pressed in the LCA's....also blasted and painted lots of small parts....tomorrow final clean/paint the front frame and then it's on to installing all the new parts! Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-14-2021, 09:56 AM	#15
LT7A Registered User Join Date: Oct 2015 Location: PNW Posts: 3,619	Re: '78 GMC SC 454/T400 long to short bed build It's looking good. You're making quick work of it.

03-14-2021, 12:01 PM	#16
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Thank you. I try to do a little bit each day so things keep moving along. __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396



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03-14-2021, 05:36 PM	#17
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build finally got the front half of the frame cleaned/scuffed/painted today...it's almost time to throw a bunch of new parts at this thing Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-16-2021, 07:40 PM	#18
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build the view you have laying under the cab sanding the frame for paint....also, I've decided not to paint the bottom of the cab...I love the original red primer and overspray...there is so little rust...I'm just going to coat it with Gibbs Brand and leave it as is... not hiding anything on this clean ass truck Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

03-19-2021, 10:33 AM	#19
1981_c10 Registered User Join Date: May 2015 Location: Fort Worth Posts: 317	Re: '78 GMC SC 454/T400 long to short bed build love the progress! __________________ Builds: 1962 C10 Recreating Dad's High School Truck 1981 C10

04-07-2021, 08:09 AM	#20
LT7A Registered User Join Date: Oct 2015 Location: PNW Posts: 3,619	Re: '78 GMC SC 454/T400 long to short bed build You do very nice work. Very clean installation.

04-10-2021, 05:41 PM	#21
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build Thanks guys! Yes, this cab is soooo clean... __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

04-15-2021, 07:00 PM	#22
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build ok, got some more brake work done...specifically finished running the new InLineTube hard lines front and rear...new brake booster and master cylinder installed... Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

04-15-2021, 07:02 PM	#23
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build next up, the big block engine stands and new mounts installed... Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

04-15-2021, 07:06 PM	#24
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Re: '78 GMC SC 454/T400 long to short bed build now, the fully restored a/c evap box ( from Tbe Parts Guy on eBay) could be installed...I used ac duct putty from Home Depot to seal the box against the firewall... you can see how I had to roll it out and set in the grove of the box... Attached Images __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

04-20-2021, 08:10 AM	#25
2003z06 Registered User Join Date: Jan 2009 Location: topeka, ks Posts: 18	Re: '78 GMC SC 454/T400 long to short bed build So clean. Love the progress. What are you using to paint the frame and suspension parts?

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