considering this off craigslist - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-09-2013, 07:31 PM
American Muscle's Avatar
305 Turbo-Fire 240hp
 
Last photo:
Join Date: Dec 2008
Location: under the hood
Age: 31
Posts: 625
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
considering this off craigslist

Im leaning toward getting this, what was the hp rating of the motor in this year corvette and what is a crossfire 350



http://littlerock.craigslist.org/bar/3478347823.html

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-09-2013, 09:03 PM
American Muscle's Avatar
305 Turbo-Fire 240hp
 
Last photo:
Join Date: Dec 2008
Location: under the hood
Age: 31
Posts: 625
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Just did a little research on the crossfire motors and they are junk. So ive read
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-09-2013, 09:23 PM
RWENUTS's Avatar
Registered User
 
Last photo:
Join Date: Nov 2011
Location: Nanaimo, BC, Canada
Age: 62
Posts: 1,885
Wiki Edits: 0

Thanks: 49
Thanked 201 Times in 190 Posts
Yup they were cantankerous. I saw a modded one once. Took the injectors and top plate off and replaced with a pair of 600 hollley's like the old z28 crossram.
I like your avatar pic. Reminds me of my old 56.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-09-2013, 09:59 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 7,455
Wiki Edits: 0

Thanks: 292
Thanked 709 Times in 684 Posts
I had an 84 vette,loved it.205 hp over 30 mpg on the Canadian gallon
edelbrock has a cool conversion for the FI. you make it dry and put injectors in the manifold.adds a few horses.Its not a bad car and it does not have that stupid digital dash
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-10-2013, 10:29 AM
S10xGN's Avatar
Gotta love a turbo!
 

Last journal entry: Body on Frame today.
Last photo:
Join Date: Aug 2004
Location: Port Neches, TX
Age: 61
Posts: 1,645
Wiki Edits: 0

Thanks: 0
Thanked 58 Times in 55 Posts
Ya never know, that crossfire was a one year deal. A lot of people thought the old Rochester "fuelie" setup from the '50's was junk and look what they're selling for today...

Russ
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-10-2013, 11:06 AM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,705
Wiki Edits: 0

Thanks: 3
Thanked 406 Times in 351 Posts
Quote:
Originally Posted by American Muscle View Post
Just did a little research on the crossfire motors and they are junk. So ive read
The Crossfire 350 is a Throttle Body Injected (TBI) engine that instead of using a 2 barrel TBI like the pickups and some full size cars instead used 2, 1 barrel TBIs placed at opposite ends of a cross ram intake.

It develops about the same power as the 2 barrel TBI pickups and full size cars this basic engine came in, about 205 hp. So this is no race car. It suffers from the same limitations of all these GM TBI engines, it is short on camshaft timing and lift and it is low on compression. These are things that can be fixed within the same envelop if you're hunting more power. The engine can be brought up to nearly 300 hp without going mechanically radical nor busting the bank and still keeping to the original configuration if you want to improve performance.

From the top down

- Use head casting 14011083 or 14096217 with the 90 degree intake manifold bolt angle, these casting also come with the post 1986 angle of 72 degrees which will not fit your original intake without making dollar value decreasing modifications to the intake. These heads have the L98 combustion chamber with reduced volume from 76 to 64 ccs which will raise the compression ratio, a much needed improvement; along with better flame propigation and better ports.

- Use the Edlebrock 3702 cam and kit which includes a reprogram chip. This cam times similar to the old 300 horse 327 and stays compatible with the vacuum needs of TBI.

These two things will take the engine to 285 hp and leave the motor looking totally original. The cam and compression increase with give the exhaust a noticable bark but the engine will idle nice and will not need converter mods.

You can go deeper with modifications to the TBI units using larger throttle diameters and injectors. Removal of the swirl vanes from the intake cover and porting the intake and some custom tuning can take this motor into the 300-330 HP range. While improving performance these mods will degrade the collector value of the car if that is a concern, however, except for the miss match of the head casting numbers this will look totally original while running way faster/better.

Bogie
Reply With Quote Quick reply to this message
The Following User Says Thank You to oldbogie For This Useful Post:
techinspector1 (01-10-2013)
  #7 (permalink)  
Old 01-11-2013, 07:58 PM
tnovot's Avatar
Registered User
 
Join Date: Oct 2008
Location: North Central Illinois
Age: 71
Posts: 137
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
I had an '84 with Crossfire and it was a good engine. Unfortunate name because the gearheads knew that name to describe problems with parallel sparkplug wires causing the wrong sparkplug to fire. It had twin TBI's each feeding 4 cylinders. Even tho it was designed and tuned for emissions and mileage, my '84 started right, got good mileage, and pulled strong through all 4 gears.
The Crossfire was state of the art in its day but got an UNDESERVED BAD RAP because in later years, there were few who knew how to tune them properly. They were NOT USED ONLY 1 YEAR but were used in all Corvettes 1982 and 1984 which means approx 77,000 engines. There were no production Corvettes sold in 1983.
Terry
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-12-2013, 07:18 PM
tnovot's Avatar
Registered User
 
Join Date: Oct 2008
Location: North Central Illinois
Age: 71
Posts: 137
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Forgot to mention that the Crossfire engine was used in many, many Camaros in those early 1980's with very few problems and didn't get the bad rap that the same engine got in the Corvette. Maybe people expected much more from a Corvette or because the later C4's with the L98 engine and the even later LT1 engines were so much improved that comparison was biased.
I'm not saying the CL Corvette is necessarily a good buy at that price with those miles - just that you shouldn't be afraid of it because of the Crossfire engine.
Terry
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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
Craigslist Packard BF Cape Cod Bob Hotrodders' Lounge 0 01-21-2009 04:22 PM
craigslist finds ap72 Engine 0 11-12-2008 06:36 AM
ebay vs craigslist and wal-mart challenges craigslist Mustangsaly Hotrodders' Lounge 1 07-01-2008 08:55 PM
craigslist NOT liable grouch Hotrodders' Lounge 0 03-16-2008 02:20 PM
Craigslist............ poncho62 Hotrodders' Lounge 28 01-18-2007 06:12 PM


All times are GMT -6. The time now is 08:47 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.