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04-15-2021, 07:06 PM
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#51 |
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Got big-block?
 
Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
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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...
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'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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04-15-2021, 07:08 PM
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#52 |
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Got big-block?
Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
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Re: '78 GMC SC 454/T400 long to short bed build
ac box installed....gorgeous
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'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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04-15-2021, 10:24 PM
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#53 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,068
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Re: '78 GMC SC 454/T400 long to short bed build
Was there an issue w/the existing Evap case or was that purchase simply just to expidite that task?
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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04-16-2021, 07:09 AM
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#54 |
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Got big-block?
Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
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Re: '78 GMC SC 454/T400 long to short bed build
hey SCOTI, both...
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'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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04-18-2021, 04:59 PM
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#55 |
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Got big-block?
Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
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Re: '78 GMC SC 454/T400 long to short bed build
It's time to take the 78's 454 to the machine shop fir rebuilding...new small dome pistons and a torque cam should really wake up this truck...CR will be right about 9.5:1 with the 119cc 781 heads...
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'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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04-20-2021, 08:10 AM
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#56 |
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Registered User
Join Date: Jan 2009
Location: topeka, ks
Posts: 18
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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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