4.3 1989 motor and the 1994 vortec 6 cyl which is better - S-10 Forum
 
LinkBack Thread Tools
post #1 of 5 Old 12-23-2013, 10:44 PM Thread Starter
Registered User
 
Join Date: Oct 2013
Age: 47
Posts: 12

User is: Navy_Chief is offline
4.3 1989 motor and the 1994 vortec 6 cyl which is better

Guys
My baja has the 4.3 but have a chance to get a complete vortec motor out of a 1994 blazer what is the difference ie which is better? And would it bolt right in?

Navy_Chief is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 12-24-2013, 08:52 AM
Boozebag
 
Mad Max's Avatar
 
Join Date: Jun 2009
Location: Baton Rouge, LA
Posts: 6,663

User is: Mad Max is offline
Re: 4.3 1989 motor and the 1994 vortec 6 cyl which is better

The Vortec is more powerful, but the engine management system is totally different. You would need the entire wiring harness for the engine and the ECU.
It will bolt in, but the electronics will kill you.
Oh, and the tranny in the newer rig is electronically controlled. You would need that also since it provides input to the ECU....

S10 addiction: (1)'82 S10, 383, 700R4, Shorty,
(2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck Truck), (3) '90 S10 2.5, 5 speed shorty,
(4) '91 S10, Built 3.4, 5 speed shorty (Voodoo Truck), (5) '92 S10, 2.5, 5 speed shorty, (Barbie Truck),
(6) '83 S10, 327, TH 350, shorty (13.00 best),
(7) '92 S10, 2.5 5 speed, Shorty,
(8) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.
Mad Max is offline  
post #3 of 5 Old 01-11-2014, 08:36 PM
Registered User
 
Join Date: Jul 2013
Location: Lakeside
Age: 35
Posts: 8

User is: sandman92040 is offline
Re: 4.3 1989 motor and the 1994 vortec 6 cyl which is better

or you could just use the heads from the 94 but I would look more towrds 96 or newer, and get you the edlebrock intake manifold and you can use everything else and be good to go. The heads alone are well worth the swap.
sandman92040 is offline  
post #4 of 5 Old 01-18-2014, 02:12 PM
Registered User
 
Blazn's Avatar
 
Join Date: Jan 2014
Location: Upstate, NY
Posts: 4

User is: Blazn is offline
Re: 4.3 1989 motor and the 1994 vortec 6 cyl which is better

The '94 Vortec heads have the same bolt pattern for the intake as the '89, so yes it is a bolt in if you reuse the intake from the '89. This will allow you to retain the stock '89 electronics. You may want to experiment with spark plug heat range but as the improvement with a vortec head is in the way the air/fuel mixing is enhanced the stock ECM should be able to handle it. I have an '89 S10 2wd Blazer, 5 spd, 4.3 vortec from a '94 with a marine carburated intake, billit 60k volt distributor and stock exhaust. Unbelieveable difference in low end torque and I have surprised many mustang and eclipse owners.

Last edited by Blazn; 01-18-2014 at 02:18 PM. Reason: Left out information
Blazn is offline  
post #5 of 5 Old 01-18-2014, 08:01 PM
peace and big boobs to u
 
phantom_mia's Avatar
 
Join Date: Nov 2007
Location: soflo
Posts: 6,026

User is: phantom_mia is offline
Re: 4.3 1989 motor and the 1994 vortec 6 cyl which is better

or you could have your heads ported and get a bigger bump stick with edelbrock manifold. i have heard about the "vortec" heads for several years now but what i've never heard is what they flow in cfm's.

mike
"primer express" 91 RCSB, 4.3 z, 3713 Edelbrock intake and headers, flowmaster exhaust, comp cams 266hr cam and roller tip rockers, ported heads, 3:08 rear. boss 338's 18x8 225/45/18 f 255/55/18 r
ADVANCED FORUM SEARCH
http://www.s10forum.com/forum/search.php

opinions expressed are my humble $.02 worth
phantom_mia is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the S-10 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.


Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome