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93 Chevy G20 Modifications #722960
April 26th 2017 6:51 am
April 26th 2017 6:51 am
Joined: Aug 2012
Posts: 50
Kansas City, MO
clayhughesmusic Offline OP
journeyman
clayhughesmusic  Offline OP
journeyman
Joined: Aug 2012
Posts: 50
Kansas City, MO
I'm wanting to replace the frame and engine on my 93 "Short" van...I believe 110 inch wheelbase. However, I want to replace it with newer, upgraded Chevy parts....hopefully 2010 or newer. I know a lot of folks on here will not agree with me and want to keep it original. But, anyone that has helpful input, advice, or experience...PLEASE HELP!


"I don't know why, it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it, since it's fundamentally emotional." - Jerry Garcia
Re: 93 Chevy G20 Modifications [Re: clayhughesmusic] #723836
May 19th 2017 5:48 pm
May 19th 2017 5:48 pm
Joined: Feb 2005
Posts: 102
Agoura Hills, CA
burr_78g10 Offline
member
burr_78g10  Offline
member
Joined: Feb 2005
Posts: 102
Agoura Hills, CA
Pretty sure that these vans are unibody.

Re: 93 Chevy G20 Modifications [Re: burr_78g10] #723847
May 20th 2017 6:54 am
May 20th 2017 6:54 am
Joined: Nov 2013
Posts: 2,082
Michigan
Dyno_Dave Offline
veteran
Dyno_Dave  Offline
veteran
Joined: Nov 2013
Posts: 2,082
Michigan
Originally Posted by burr_78g10
Pretty sure that these vans are unibody.


Correct. His '93 Chevy G20 is a uni-body. 1996 and up are full frame-on-body vehicles.

Re: 93 Chevy G20 Modifications [Re: clayhughesmusic] #723866
May 21st 2017 12:30 am
May 21st 2017 12:30 am
Joined: Aug 2012
Posts: 50
Kansas City, MO
clayhughesmusic Offline OP
journeyman
clayhughesmusic  Offline OP
journeyman
Joined: Aug 2012
Posts: 50
Kansas City, MO
Ok, not a problem. I've decided I just want to update the drivetrain, engine/transmission. If anyone has any experience with that, I'd appreciate the advice!


"I don't know why, it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it, since it's fundamentally emotional." - Jerry Garcia
Re: 93 Chevy G20 Modifications [Re: clayhughesmusic] #723875
May 21st 2017 12:58 pm
May 21st 2017 12:58 pm
Joined: Apr 2016
Posts: 69
Oregon
D
Don_F Offline
journeyman
Don_F  Offline
journeyman
D
Joined: Apr 2016
Posts: 69
Oregon
2010 is an LS Swap. Hot Rod Garage did an LS swap on you tube. This is probably not a project that someone posting basic questions on a forum should tackle, it's up to you. I don't think anyone here will care if you keep it stock or not so you don't have to worry there. An easier project you can upgrade the 93 computer to a better 94-95 ecm and keep the TBI. The later style v8 vortec heads up to 2002 can be fitted, even try burning your own chips if you're up for a challenge. The 4l60e can be upgraded to 2001 and later 4l65e specs. All it takes is time and lots of money.

Re: 93 Chevy G20 Modifications [Re: Don_F] #724373
June 05th 2017 11:56 am
June 05th 2017 11:56 am
Joined: Aug 2012
Posts: 50
Kansas City, MO
clayhughesmusic Offline OP
journeyman
clayhughesmusic  Offline OP
journeyman
Joined: Aug 2012
Posts: 50
Kansas City, MO
Don,
You are the man I need to be talking to! Yes, basic questions...but I have a pretty vast knowledge with other mechanical work...electric, just so-so. But, luckily, you responded and seem to know the steps I need to take to make this project work.

Just to give you a quick background on why I want to do this project...its purely sentimental. My dad past away a few years ago, left me all of his tools, never got to rebuild a car/truck/van together, and now its my goal to do a rebuild with his tools. We rebuilt mixers, extruders, and everything in between, for Firestone, Goodyear, etc, etc. So, I feel I can tackle this "machine"...just need to learn more about it! THANK YOU!


"I don't know why, it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it, since it's fundamentally emotional." - Jerry Garcia
Re: 93 Chevy G20 Modifications [Re: Don_F] #724378
June 05th 2017 12:27 pm
June 05th 2017 12:27 pm
Joined: Aug 2012
Posts: 50
Kansas City, MO
clayhughesmusic Offline OP
journeyman
clayhughesmusic  Offline OP
journeyman
Joined: Aug 2012
Posts: 50
Kansas City, MO
My transmission (4l60E) is pretty new and, for now, I'd like to avoid having to do much to it. My cam and lifters are going out in this 4.3 V6...and the power is horrible. I want to replace it with a V8 that will mount to my current transmission, simple/best options. I am fine with a small block V8, if that is recommended.


"I don't know why, it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it, since it's fundamentally emotional." - Jerry Garcia
Re: 93 Chevy G20 Modifications [Re: clayhughesmusic] #724387
June 05th 2017 3:02 pm
June 05th 2017 3:02 pm
Joined: Oct 2013
Posts: 55
Illinois
1
1959 Offline
journeyman
1959  Offline
journeyman
1
Joined: Oct 2013
Posts: 55
Illinois
Keep it simple.

These vans are unibody so no frame to replace. Might need patched up but...? A small block Chevy should bolt up to your modern trans. Does your van require a smog check in KC? Might have to keep it a six...? Go to a junkyard, there should be plenty Chevy trucks with 350s in em. You might even find another G20. Strip that van for parts like radiator, alternator, water pump, hoses, pulleys, linkage, brackets, etc. Find a 350 and rebuild it for moderate duty. Skip the LS swap.

Put it all back together and you will be on the road in a month or two.

Keep it simple.

Re: 93 Chevy G20 Modifications [Re: 1959] #724388
June 05th 2017 3:50 pm
June 05th 2017 3:50 pm
Joined: Aug 2012
Posts: 50
Kansas City, MO
clayhughesmusic Offline OP
journeyman
clayhughesmusic  Offline OP
journeyman
Joined: Aug 2012
Posts: 50
Kansas City, MO
Thank you for that! Would a smaller block, something smaller than 350, work as well? Is a Vortex V6 even worth looking into?


"I don't know why, it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it, since it's fundamentally emotional." - Jerry Garcia
Re: 93 Chevy G20 Modifications [Re: clayhughesmusic] #724590
June 10th 2017 5:39 pm
June 10th 2017 5:39 pm
Joined: Apr 2016
Posts: 69
Oregon
D
Don_F Offline
journeyman
Don_F  Offline
journeyman
D
Joined: Apr 2016
Posts: 69
Oregon
Originally Posted by clayhughesmusic
My transmission (4l60E) is pretty new and, for now, I'd like to avoid having to do much to it. My cam and lifters are going out in this 4.3 V6...and the power is horrible. I want to replace it with a V8 that will mount to my current transmission, simple/best options. I am fine with a small block V8, if that is recommended.


4l60e are not known for their strength. especially in 93. The 1996 and later 350 has vortec heads and about 30-40hp compared to the 95 and its 193 heads, but a lot of the time the vortec's are cracked. Summit has new castings assembled for about 320 each 12558060. The ports on the vortec heads are raised, both intake and exhaust, more flow without loosing velocity. Chevy has a tbi manifold for the 96 + engine to use the TBI (12496821). There are other options if you don't need EGR for a smog check. If you do change heads, the computer chip will have to be redone so visit http://www.gearhead-efi.com/ to learn about that.

Last edited by Don_F; June 10th 2017 5:42 pm.
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