3.8L Supercharged V-6 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-14-2003, 05:15 PM
Registered User
 
Join Date: Jan 2003
Location: Seattle, WA
Posts: 8
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question 3.8L Supercharged V-6

I'm really glad I found this page...
I blew up my 3.1L V-6 in my '90 Chevy Z24. I've really been itching to drop in a punched out 3.8 (to 4.2) Supercharged V-6. Will the SC 6 from the newer Pontiac Grand Am's work? I found an older 3.8 from a Buick and planned on rebuilding that. Any advice?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-14-2003, 06:11 PM
Member
 
Join Date: Dec 2002
Location: north florida
Age: 71
Posts: 220
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

first of all 3.8 will not go where a 3.1 is at. engine bay not large enought to swap engine and trany. not to mentuiion the dif. in engine controls.lots of luck <img src="graemlins/evil.gif" border="0" alt="[evil]" />
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-14-2003, 07:45 PM
Member
 
Last photo:
Join Date: Dec 2002
Location: Grand Rapids, MI
Posts: 138
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Welllllll. I'm not going to claim to know anything about the GM supercharged 3.8. What I can tell you about is what Ford did. Assuming that you can overcome the obstacles stated by toymobile, here are some things to keep in mind. Ford ran an 8.2:1 compression ratio on the early T-Birds and later upgraded to 8.5:1. Ford deemed it neccessary to run an intercooler to lower intake charge temps, although it appears that they ran more boost than the GM setups. The stock crank was forged vs. cast for the n/a version. The block itself was upgraded over the n/a block. The heads for the SC version are surprisingly identical to the n/a units with regards to port design and combustion chamber. You will need larger injectors (stock Fords were 30 lb/hr on the early models and 36 lb/hr on the later models). You will probably need a larger fuel pump to handle the increased demand. You will need to seriously upgrade your cooling system to handle the increased power. Obviously the computer would need to be changed as well. All that said, your best bet would probably be to find a wrecked late model GTP or Regal GS and swap everything over from that car to yours. Like I said I do not know what GM specifically did(if anything) to upgrade the 3.8 to run boost, but I don't think I would take the chance and just rebuild an older unit.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-15-2003, 12:31 AM
Registered User
 
Join Date: Jan 2003
Location: Seattle, WA
Posts: 8
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question

Engine bay not large enough? I know of a guy that runs a 3.8 Turbo in his second gen Z24 and the largest the second gens ever came stock with was a 3.1 Turbo... the blocks are supposed to be similar in size and the 3.8 compatible with the stock Muncie 5-spd tranny. Maybe I can kiss the Supercharger goodbye and just go with Turbo? Would NOS be compatible with a Turbo or could I boost the power even more with cold air induction? I'm trying to get as much punch put of my Z without having to do any serious tweaking to the body... <img src="graemlins/sweat.gif" border="0" alt="[sweat]" />
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-15-2003, 02:44 AM
deuce_454's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Copenhagen, Denmark
Age: 39
Posts: 1,000
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Post

nos is compatible with turbo, but is rarely used as the turbo has to be designed for the exhaust flow and the exhaust flow increases with NOS, makeing the spool up time off the NOS unacceptabilly high, but with turbo the sky is the limit when it comes to horespower. formula one ran 50 pounds of boost and churned 1200 HP from a 91 cubic inch motor (1,5L), in the real world a GN t-type with 500 ponies is not uncommon now a days

so the only thing you can use NOS for is a sort of antilag system where the nos is turned on at full throttle when boost is lower than your set level and therebuy removeing the lag as the NOS will provide the kick before the turbo sools up.

and if you can put a 350 in a fiero (also a 3.1), then you certainly can fit a 3.8 in your Z24, you might need a shoehorn and lots o dinneros, but everything is possible

[ January 15, 2003: Message edited by: deuce_454 ]</p>
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 for yourself.
Email Address:

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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



All times are GMT -6. The time now is 04:18 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.