Turbo 350 Chevy - 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 09-22-2005, 04:54 PM
Member
 
Join Date: Nov 2003
Posts: 75
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Turbocharging a 350 Chevy

Hey folks, another turbo question ... This time about doing a Chevy small block instead of the big block a while back. I'm looking at the possibility of doing a turbo setup on my S10 and retaining the carburator setup. I figure I could just use a pressure plenum to do that, but the question is, what turbo to use. I'm looking to use something that is readily available, that is, Powerstroke, Cummins, or Duramax turbo. I've heard the Powerstrokes are easier to deal with since they're Garrett turbos, but from what I understand, the Cummins is able to make more torque than the others with a much smaller displacement. Some specifications on my engine since I know those matter also:

350 - .060 overbore = 360 cid
2-bolt ARP main bolts
SCAT I-beam rods (550 hp rated), floating pins, capscrew ARP bolts
Forged, unturned crank
ATI balancer, SFI
B&M flexplate, SFI
Wiesco pistons, 10.2:1 compression (I know its a little high)
882 heads, bowl ported and polished real shiny on exhaust, gasket matched intake and light polishing, no bowl work, 2.02/1.60 valves
cam: 243/243 @.050 mech. flat tappet w/ .517 lift on both
Magnum roller tip rockers
Crane kool poly locks
RPM Air Gap intake
750 mechanical secondary carb (for pressurized box)
MSD BTM ignition box

For the intercooler setup, I'm probably going to go with an air-water setup so it's more compact up front of the truck (driver's fenderwell area).
Also, will use water/alcohol injection.

I don't intend to get things much more than 8psi boost with 93 octane, but maybe 11 psi or so with some race gas and the intercooler/h2o injection.

Maybe Chris would have some helpful info on why I SHOULD NOT use the carb/box deal.

Thanks.

    Advertisement

Last edited by radracer43; 09-24-2005 at 12:58 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-23-2005, 11:55 AM
Siggy_Freud's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Dec 2003
Location: Portland, Oregon
Age: 29
Posts: 2,371
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Carbed systems are going to be much harder to tune with a Turbo'd setup. You also will not have the ability to run a knock sensor to determine at what point the boost is too much for the timing/mixture. I would seriously think about an FI setup if your planning on running a Turbo'd engine.

Secondly, I dont think your boost goals of 8-11 PSI really warrant a water/alky injection setup. As far as I've read, thats somewhat old technology and isn't as efficient as other more modern setups. Running a good intercooler and keeping your mixture and timing correct, you shouldn't have much trouble with 8+ PSI.

Also, you are starting with some really high compression to be running a Turbo. It would be better to shoot for 9:1 or perhaps a tad bit higher for your intended boost range.

I am sure Chris will jump in with much more information (and possibly correct me on some things lol).
__________________
Bringing history and technology together.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-24-2005, 12:59 PM
Member
 
Join Date: Nov 2003
Posts: 75
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the reply. I think that I may need to make a new post though because after taking a second glance, it appears that my thread is in relation to the TH-350 transmission.
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
the history of chevy v8's savman1 Hotrodders' Lounge 43 03-02-2012 06:57 PM
El Camino Engine - 350 Chevy or 455 Pontiac bjam2 Engine 16 08-07-2007 03:45 PM
TBI Questions on a 93' Chevy FS 350 IWANTMOREHP Engine 1 01-04-2004 01:42 PM
TURBO 350 or 700R4 jeff germano Transmission - Rearend 17 08-31-2003 05:30 PM
63 Chevy II Turbo 350 conversion chevyhome Transmission - Rearend 0 05-21-2002 09:45 PM


All times are GMT -6. The time now is 04:26 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.