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!

Common problems with 1991 5.7 liter engines

Thread Tools
 
Search this Thread
 
Old 07-26-2005, 12:03 PM
  #1  
Junior Member
Thread Starter
 
Stratocaster's Avatar
 
Join Date: Jul 2005
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1992 Z28
Engine: 305 TPI
Transmission: 700 R4
Common problems with 1991 5.7 liter engines

Hello, I used to own a 1987 Camaro. I'm thinking about getting another one and I'm leaning more towards a 1991-92 Z-28. I found a 1991 Z-28 with a 5.7 liter with 155,000 miles on it for $3,900. I haven't seen the car in person, just in pictures, but the body looks to be in really good shape. My question is, what kind of problems are common with the 5.7 liter engines with that many miles? What about any other non engine problems? I would hate to get the car and wind up with a lot of problems on my hands. Assuming the body is in good shape does $3,900 sound like a good deal?
Old 07-26-2005, 06:07 PM
  #2  
Member
iTrader: (1)
 
vrtc350's Avatar
 
Join Date: Feb 2005
Location: Frankfort, KY
Posts: 471
Likes: 0
Received 0 Likes on 0 Posts
Car: 81 Corvette
Engine: 355, ported vortec heads
Transmission: 700r4
I would say the rear main seal is an aggrivating one. Granted, my 91 is a 305 but that was the first thing that really went. Damn thing smoked like a freight train from all the oil hitt the y-pipe. I
Old 07-26-2005, 06:49 PM
  #3  
Supreme Member

 
IROCZZ3's Avatar
 
Join Date: Aug 1999
Location: San Diego, CA
Posts: 1,053
Likes: 0
Received 2 Likes on 2 Posts
Car: 87 Buick GN
Engine: 3.8L (231 cid) V6
Transmission: 200-4R
Axle/Gears: 10 bolt G80/ 3.42
If the heads haven't been touched I'd say the valve guide seals.
Old 07-26-2005, 07:06 PM
  #4  
Member
iTrader: (1)
 
vrtc350's Avatar
 
Join Date: Feb 2005
Location: Frankfort, KY
Posts: 471
Likes: 0
Received 0 Likes on 0 Posts
Car: 81 Corvette
Engine: 355, ported vortec heads
Transmission: 700r4
Yeah, I had that problem too. But that one piece rear main blew wide open. It was either park it, or fix it. So I fixed it with a 350

Not to mention they are harder to replace than the 2 piece.
Old 07-27-2005, 12:15 AM
  #5  
Senior Member

iTrader: (1)
 
iceman02's Avatar
 
Join Date: Jan 2002
Location: waco, tx
Posts: 732
Likes: 0
Received 1 Like on 1 Post
Car: 91Z28 L98
Engine: HSR 350
Transmission: Goebel 700R4
Gauges quit working (correctly). If you do a search, you'll find that it is very common for the tach to be broken, actually it reads several thousand rpm off. And unfortunately, the gauge cluster is one piece. Oh yea, my temp gauge is also 20* off.
Old 07-27-2005, 09:22 AM
  #6  
Junior Member
 
85rocker's Avatar
 
Join Date: Mar 2003
Location: KY
Posts: 87
Likes: 0
Received 0 Likes on 0 Posts
multec injectors = junk throw them out no questions asked

get some replacements off eBay cheap.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ghettobird52
Tech / General Engine
16
07-05-2024 11:18 PM
jhawkeye
Engine Swap
5
05-25-2022 06:33 PM
86IROC112
Body
47
04-09-2016 10:20 PM
jharrison5
Engine Swap
5
08-19-2015 05:53 PM
bradleydeanuhl
DFI and ECM
4
08-12-2015 11:48 AM



Quick Reply: Common problems with 1991 5.7 liter engines



All times are GMT -5. The time now is 03:10 PM.