Vanning.com logo
Boxdin
Site Navigation


Advertisements
Recent Posts
Good day
by lukester - March 28th 2024 12:26 pm
Crazy mods
by MufflerMan Mike - March 28th 2024 9:38 am
Lew Greger
by MufflerMan Mike - March 27th 2024 5:15 pm
1987 G20 Gypsy
by SDMickey - March 25th 2024 9:39 pm
Featured Links


Previous Thread
Next Thread
Print Thread
Rate Thread
Page 10 of 15 1 2 8 9 10 11 12 14 15
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #787570 January 20th 2022 10:02 am
Joined: Jul 2009
Posts: 6,256
Likes: 164
Master Metal Sculptor
Online Content
Master Metal Sculptor
Joined: Jul 2009
Posts: 6,256
Likes: 164
This is really coming together. Nice work

AdSense long
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #790424 April 15th 2022 10:01 am
Joined: Apr 2007
Posts: 249
Likes: 59
1
G Van Man
OP Offline
G Van Man
1
Joined: Apr 2007
Posts: 249
Likes: 59
Have been slowly working on it. Managed to get the new muffler and tailpipe fit yesterday afternoon. Snagged a Walker Quietflow SS and matching 4" tailpipe for a 2001-2006 3500HD with a 6.0L or 8.1L from Summits scratch and dent clearence area. Fit the 97 Van like it was made for it. Muffler is dual 3" in, single 3" out and the tailpipe is 4" but necks down to 3 where it slides into the muffler.

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

https://youtu.be/zJBiw3xkiYY

https://youtu.be/bq8CAvqnubU


1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #790433 April 15th 2022 11:50 pm
Joined: Aug 2002
Posts: 18,536
Likes: 135
Supreme Master
Offline
Supreme Master
Joined: Aug 2002
Posts: 18,536
Likes: 135
Nice


[Linked Image from i.imgur.com]

Arianrhod:2003 Chevy Astro
Black Magic: 1985 Dodge B-250
Serenity:1985 Chevy G-20
The Outcast:1983 Ford club wagon
Luna 1974 VW bay window transporter
Freedom:1990 Ford E-150(parts van)
Outcast Vanners van club
Support your local 2%
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #790443 April 16th 2022 9:10 pm
Joined: Jul 2019
Posts: 11,241
Likes: 411
S
Post Junkie
Offline
Post Junkie
S
Joined: Jul 2019
Posts: 11,241
Likes: 411
Nice work

Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #790448 April 17th 2022 7:36 am
Joined: Mar 2021
Posts: 208
Likes: 35
S
enthusiast
Offline
enthusiast
S
Joined: Mar 2021
Posts: 208
Likes: 35
Just caught up on the van. Awesome work! I installed the same head unit in my 05 Safari. Had to move everything from around the dash. It was alot of work but I loved it. Sold the van but kept the head unit and dash trim to put into my 98 astro. [Linked Image]
Was thinking about putting in the Express. But not sure if I want to do it the same as I did the first time. I hate have to take that whole dash panel off every time I need to get in there. Dont want to say it, but I like the way Ford radios come out.

Re: 1997 Chevy Express Cobra Conversion
SafariTim #793038 July 15th 2022 10:25 am
Joined: Apr 2007
Posts: 249
Likes: 59
1
G Van Man
OP Offline
G Van Man
1
Joined: Apr 2007
Posts: 249
Likes: 59
Made alot of headway and it is driveable now. After street tuning I dialed in the 383 on a chassis dyno. It made 383 hp and 399 tq uncorrected and 412 hp and 431 tq std corrected on a 102F day. Peak torque happened at 3,100 rpm and peak hp was 5,600. I need to change the fuel pump so that I can dial it in on E85, its begging for higher octane and more timing. I made peak power with a very conservative advance curve and 91 octane.

I flushed the ac system, changed the compressor to a Sanden 4261, swapped in a parallel flow replacement condenser and went with a variable orifice tube up front from Rockauto. I added a PCM controlled 16" 3,000 cfm puller and a cutdown Duramax fan on a Trailblazer SS thermal fan clutch. Went back to a stock radiator and an 01-02 fan shroud. Really made everything fit better. Using a factory 01+ Donaldson designed GM air cleaner housing and it is plumbed with a 4" intake and 102mm cartridge style LS3/LS7 MAF. I get 41°F air out of the left vent at idle in 102F temps and the engine stays around 185°F. I recently updated the fan clutch to an electronically controlled clutch. The clutch fan is on the PCM fan 2 output via a relay that supplies it 12v. When the engine first starts and the interior is hot the fan clutch locks up and really drops the ac pressures, then as the interior cools down and the pressures drop the mechanical fan returns back to the lower rpm setting. If it warms up to 189F the clutch is locked in. It usually holds around 185F with the clutch released and the 3,000 cfm electric on.


1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #793751 August 02nd 2022 11:46 am
Joined: Apr 2007
Posts: 249
Likes: 59
1
G Van Man
OP Offline
G Van Man
1
Joined: Apr 2007
Posts: 249
Likes: 59
Currently waiting on an all aluminum replacement radiator from California. To replace the almost new TYC OE replacement thats core exploded. I installed my all NOS GM headlights, turn signals, side markers and reflectors up front along with finished my exterior LED conversion. Including the headlights and all exterior lights except the turn signals and brake lights that are a momentary use the exterior lighting draws 4.7 amps. 4 HI headlight mod incuded for extra light. Now on to the customizing the Kodiak K&N heatshield so that it clears the hood.

[Linked Image]

[Linked Image]

[Linked Image]

Last edited by 1983G20Van; August 02nd 2022 11:54 am.

1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'
Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #793757 August 02nd 2022 6:19 pm
Joined: Mar 2021
Posts: 208
Likes: 35
S
enthusiast
Offline
enthusiast
S
Joined: Mar 2021
Posts: 208
Likes: 35
Yes, Sir. What he said was,
You cant spell Express without SS.

Re: 1997 Chevy Express Cobra Conversion
1983 G20 Van #793770 August 03rd 2022 12:30 am
Joined: Jul 2019
Posts: 11,241
Likes: 411
S
Post Junkie
Offline
Post Junkie
S
Joined: Jul 2019
Posts: 11,241
Likes: 411
lol

Page 10 of 15 1 2 8 9 10 11 12 14 15

Moderated by  Astro 

Link Copied to Clipboard
Donate


Upcoming Events
discovery
Who's Online Now
0 members (), 16 guests, and 4 robots.
Key: Admin, Global Mod, Mod
Newest Members
TheDrunkenGunsmith, Jac, LOVclassics, ZenMuffin, Milkman530
12724 Registered Users
Top Posters (30 Days)
SDMickey 129
CatFish 25
frscke1 25
Wedgy 21
Forum Statistics
Forums68
Topics35,746
Posts537,916
Members12,724
Most Online177
May 8th, 2013

Powered by UBB.threads™ PHP Forum Software 7.7.4