Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

Cross fire injection

Thread Tools
 
Search this Thread
 
Old Mar 26, 2001 | 02:37 PM
  #1  
92RSMAN's Avatar
Thread Starter
Junior Member
 
Joined: Sep 1999
Posts: 56
Likes: 0
From: CALGARY,AB,CANADA
Cross fire injection

This is a little off subject but i might be buying a 84 vette and it has a 350 cross fire injected motor. is that a good motor anything to look out for?

------------------
Pure Black 1992 RS Camaro

CHECK OUT MY SITE! http://www.angelfire.com/ne/92rscamaro/index.html
Reply
Old Mar 26, 2001 | 03:32 PM
  #2  
kevinc's Avatar
Supreme Member
 
Joined: May 2000
Posts: 2,963
Likes: 3
Car: 1982 Z28
Engine: LS1
Transmission: T56
The engine is just your garden-variety smallblock with hydraulic flat-tappet cam.

The FI system is a total nightmare in my experience. Grumpy (in the TPI section) has gotten great results by upgrading to a '747 TBI computer and bigger injectors.

I played with my '82 CFI setup and had it running very well, still seemed like I was struggling for every HP I could find so I dumped it in favor of TPI.

------------------
1982 Z-28

See http://www.mycar.net/mafb/registry/detail.cfm?id=276 for details
Reply
Old Mar 26, 2001 | 06:33 PM
  #3  
92RSMAN's Avatar
Thread Starter
Junior Member
 
Joined: Sep 1999
Posts: 56
Likes: 0
From: CALGARY,AB,CANADA
DARN what about the 350's are they still fast? hp? anyone elses opinoin on them? thanks for the reply kevin....i cant afford a tpi vette...ill try but it looks like a cfi but i hope not
Reply
Old Mar 26, 2001 | 07:13 PM
  #4  
RB83L69's Avatar
Supreme Member
 
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
My 83 L69 Z28, bone stock, would wax a CFI Vette when both cars were new. The CFI Vettes all came with 350s BTW, the CFI F cars all had 305s.

If you're looking for something fast, look elsewhere. If you just want to pick up an old Vette for cheap, it might not be too bad.

------------------
"So many Mustangs, so little time..."
ICON Motorsports
Reply
Old Mar 27, 2001 | 11:15 AM
  #5  
92RSMAN's Avatar
Thread Starter
Junior Member
 
Joined: Sep 1999
Posts: 56
Likes: 0
From: CALGARY,AB,CANADA
thanks rb for you reply.
Reply
Old Mar 27, 2001 | 11:34 AM
  #6  
superz's Avatar
Member
 
Joined: Jan 2001
Posts: 167
Likes: 0
From: Bryan, OH. 43506 usa
yeah i would say that CFI is pretty much a waste of time. there are some guys that can work majic with them but there are so many other induction systems that have the ability to procuce so much power, it seems kind of a waste to spend alot on a CFI unit.
Reply
Old Mar 27, 2001 | 01:24 PM
  #7  
Damon's Avatar
Supreme Member
 
Joined: Sep 1999
Posts: 7,072
Likes: 13
From: Philly, PA
THey're not without possibility for performance. THeir operating principles are basically identical to later TBI injected cars- a speed-density based electronic fuel injection system. They guys in the TBI section of this board could probably help out with the tuning quite a bit.

At the end of the day, it's not really the induction setup that's holding you back but just the usual issues of an emissions era motor:

1. Weak cam
2. Low Compression
3. Choked off exhaust
4. Lousy cylinder heads

Build the engine a little more stout with good compression and cam, then get a custom chip burned to match the fuel and spark curves to the engine's new found breathing capability and it'll probably run like a scalded cat.
Reply
Old Mar 27, 2001 | 05:21 PM
  #8  
burnoutrpm's Avatar
Senior Member
 
Joined: Jan 2001
Posts: 527
Likes: 0
From: outerspace(maybe..pluto)?
engine sounds good lose the CEASE FIRE injection and go with anything tpi carb something better!!! my freind had one of those and the cfi sucks!!

------------------
89 firebird formula

356 10.5:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
sportsman 2 heads 64cc 2.02/1.60 valves 200cc intake runner
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!


future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!
Reply
Old Mar 27, 2001 | 05:40 PM
  #9  
soulbounder's Avatar
Supreme Member
 
Joined: Jul 2000
Posts: 1,787
Likes: 20
From: Tomball, TX
Car: 89 TTA
Engine: Turbo 3.8
Transmission: 200R4
One of my best friends has an 84' Vette and I think it's a very nice car. I believe the CFI 350 was rated somewhere around 205 HP?? Anyway, it's a really nice car, the engine runs great and he doesn't have trouble with it. I think the only mods he has is an MSD ignition, flowmaster mufflers, and homemade ram air. The most restrictive part of the engine is the intake, but x-ram and offenhauser have made a solution to that problem. I think it has a lot of potential.
PS I also love the hardtop! My only complaint about the car is that all of them seem to rattle a lot. Other than that, it's a nice car and a head turner. Drive one and see how you like it!
Reply
Old Mar 27, 2001 | 08:56 PM
  #10  
92RSMAN's Avatar
Thread Starter
Junior Member
 
Joined: Sep 1999
Posts: 56
Likes: 0
From: CALGARY,AB,CANADA
thank you very much soulbounder im quit excited on taking it for a spin going to on friday! its black in color too...but im going to take it to get an inspection done on it as well.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MoJoe
Members Camaros
33
Feb 6, 2025 09:47 PM
RS Reaper
Electronics
4
Oct 17, 2018 07:52 PM
Navy8125
Exterior Parts Wanted
0
Oct 1, 2015 11:24 AM
SS-EXPRESS
Electronics
2
Sep 28, 2015 09:14 AM
indygene
Camaros for Sale
0
Sep 26, 2015 11:21 AM




All times are GMT -5. The time now is 10:02 PM.