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Username Post: Need help        (Topic#341736)
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-06-17 07:22 PM - Post#2669743    

I have a 1989 Chevy k1500 with two problems one blown head gaskets two burns oil like nuts 3 quarts to every 500 miles. Truck has about a 131,00 on the odometer should I have the engine rebuilt or replaced At the dealership with a new creat engine. The current engine is a 350 or 5.7. I just had the clutch replaced. What are your thoughts on what I should do



 
Low priced Genuine GM Auto Parts
raycow 
Honored Member
Posts: 26514
raycow
Loc: San Francisco, CA
Reg: 11-26-02
01-06-17 11:47 PM - Post#2669781    
    In response to bmb

You are presently in the 55-57 passenger car forum. I have asked the moderator to move this thread to the 88-98 truck forum, where you will likely receive more and/or better answers.

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
rockfangd 
"4th Year" Gold Supporting Member
Posts: 2155
rockfangd
Age: 31
Loc: Utica ny
Reg: 04-13-10
01-07-17 10:40 AM - Post#2669834    
    In response to raycow

wow. that is low miles too.
Did the truck sit for awhile?
What makes you say the headgaskets are bad?
Is there any blueish or black smoke coming out of the exhaust?

Old School GM fan FOREVER


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-07-17 12:02 PM - Post#2669848    
    In response to rockfangd

Far as if it sat for a while not that I know of. Far as why I think head gaskets are out is because I can pull the radiator cap of when cold then start the truck and it's like old faithful coming out of the radiator fill and can smell unburnt fuel as as well.



 
someotherguy 
Moderator
Posts: 28362
someotherguy
Age: 47
Loc: Texas
Reg: 08-01-03
01-07-17 12:30 PM - Post#2669853    
    In response to bmb

Sounds like it's had a rough maintenance/usage life. It really should have lasted well beyond those miles.

Paying the dealership for the engine and labor bill will likely be more than the whole truck is worth once done.

If you can do the engine replacement yourself or find an honest local independent mechanic, you can get the GM crate engine direct replacement for just under $1800. Part # 12568758

There are other options for sure, but that's sort of a no-brainer one.

A cheaper option would be to find another used TBI 350 to swap in there, which could generally be had for $500 or less depending on your luck. You'd definitely only want to get one you can see/hear run first and maybe even run a compression check on it too.

The upside of that GM crate engine is that when used in the correct application (1987-1995 fullsize trucks/SUV's with the K engine VIN code) they have a 100K mile / 3 year warranty (full of gotchas as any warranty is, so you'll want to read all the fine print.)

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-07-17 12:57 PM - Post#2669857    
    In response to someotherguy

I would agree with the lack of care giving to the truck before I bought it a year ago since I bought I have done what I would like to say has been giving it a good amount of tlc to it witch is true but I have also aboused it some to after all it is a farm/work truck. So i am trying to just keep it on the road since it is my daily driver.



 
Kazz 
Senior Member
Posts: 275

Loc: Montana
Reg: 05-03-03
01-07-17 04:26 PM - Post#2669900    
    In response to bmb

I had a 92 ext cab with 142K that burned oil like crazy. It actually was a nice truck but burned a quart every 100 miles. The guy I bought it from was honest about it consuming oil, just not the amount. Comp check showed no problems, borescoped all cylinders with no seen issues. The plug for #1 cyl was badly oil fouled so we figured the oil rings for that cyl were bad.

I was going to keep it and replace the engine but other things started going wrong with it and I wanted to get rid of the red interior so economic feasibility was not there. I ended up buying a real nice 98 ext cab for just a little more than what I would have paid to fix the 92.

Thanks,
Kazz

04 Chevy Tahoe
98 Chevy Z71 Ext Cab 4x4

Money can't buy you love
But it sure can buy you a really good time!


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-07-17 05:15 PM - Post#2669912    
    In response to Kazz

I thought about buying another truck to but here in North Dakota they want to much for them with less then a 150,00 on the odometer or they have 300,000 on the odometer I found one on bizman it was a 97 I think with only 56,000 on the odometer with a price tag of &10,000 to me that sounds high



 
Kazz 
Senior Member
Posts: 275

Loc: Montana
Reg: 05-03-03
01-07-17 06:28 PM - Post#2669948    
    In response to bmb

The thing to remember is this series of trucks are becoming classics. The one you mention with 56K miles on it might not be priced too bad if it's in real nice, original shape.

It all comes down to what you plan on doing with the truck. If it's just a farm/hunting truck, you'll want to make it mechanically sound as economically as possible. If it's not a rusty POS, you should eventually get you money back out of it.

Kazz

04 Chevy Tahoe
98 Chevy Z71 Ext Cab 4x4

Money can't buy you love
But it sure can buy you a really good time!


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-09-17 09:06 AM - Post#2670258    
    In response to Kazz

I don't think it's a rusted out pos just one cab corner is bad so I gues I'll take and find a good repair shop around here and get a quote then do some research on a good creat engine and then go from there. Thanks for all the advice on this if you good people have a recommended creat engine that has a little more hp and torque and for a good price please let me now. Thanks again



 
bowtie44s 
Valued Contributor
Posts: 3697
bowtie44s
Age: 34
Loc: wv
Reg: 08-29-12
01-09-17 09:43 AM - Post#2670266    
    In response to bmb

You'd definitely notice 100 HP.
https://summitracing.com/parts/mll-bp3832ct1

Jeff

'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-09-17 11:56 AM - Post#2670284    
    In response to bowtie44s

What do they mean by this "This engine requires a late 350ci weighted flexplate/flywheel. Would I need to replace my flywheel an clutch or can I use what I have



 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-09-17 11:57 AM - Post#2670286    
    In response to bowtie44s

What do they mean by this "This engine requires a late 350ci weighted flexplate/flywheel. Would I need to replace my flywheel an clutch or can I use what I have



 
raycow 
Honored Member
Posts: 26514
raycow
Loc: San Francisco, CA
Reg: 11-26-02
01-09-17 01:44 PM - Post#2670298    
    In response to bmb

  • bmb Said:
What do they mean by this "This engine requires a late 350ci weighted flexplate/flywheel. Would I need to replace my flywheel an clutch or can I use what I have


That likely means the engine has a one-piece rear seal. All flywheels for that type of crank are weighted. Your 89 engine should also have a one-piece seal, so your present flywheel should be a direct swap. I believe the first year for the one-piece seal was 86.

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
bowtie44s 
Valued Contributor
Posts: 3697
bowtie44s
Age: 34
Loc: wv
Reg: 08-29-12
01-09-17 07:33 PM - Post#2670364    
    In response to bmb

It's a 400 crank which is externally balanced. It will also need a 400 harmonic balancer. The 2 piece rear main 350 was internally balanced. The one piece 350 was halfway external balance. Non weighted balancer, weighted flywheel. As raycow said, your flywheel should work fine.

Jeff

'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-10-17 12:48 PM - Post#2670458    
    In response to bowtie44s

Okay thanks for that information. How hard is it to switch out my ugly moon styl gauges to the needle styl the the reason I am asking is because I would like to have the factory style tack



 
bowtie44s 
Valued Contributor
Posts: 3697
bowtie44s
Age: 34
Loc: wv
Reg: 08-29-12
01-10-17 03:26 PM - Post#2670477    
    In response to bmb

  • bmb Said:
How hard is it to switch out my ugly moon styl gauges to the needle styl the the reason I am asking is because I would like to have the factory style tack



It's simple if you can find a 91 cluster. The 91 non tach clusters were also moonies so don't buy one sight unseen. I will go ahead and say a 92-94 will not work. People have done it, but you have to rewire everything.

Jeff

'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap


 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-10-17 03:58 PM - Post#2670484    
    In response to bowtie44s

Okay so what makes the 92-94 gauges different then the 88-91s. That sounds like a royal pain in the back side to rewire everything



 
rockfangd 
"4th Year" Gold Supporting Member
Posts: 2155
rockfangd
Age: 31
Loc: Utica ny
Reg: 04-13-10
01-10-17 06:14 PM - Post#2670508    
    In response to bmb

they are entirely different.
they plug in differently which means the plug on the plate will not work.
The DRAC is external.
those are 2 main things I can think of.
I installed a 91 needle cluster in my 90 and I love it

Old School GM fan FOREVER


Edited by rockfangd on 01-10-17 06:15 PM. Reason for edit: No reason given.

 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-10-17 08:52 PM - Post#2670531    
    In response to rockfangd

Ok thanks



 
bmb 
Forum Newbie
Posts: 42

Age: 27
Loc: ND
Reg: 03-23-15
01-13-17 04:46 PM - Post#2670993    
    In response to bmb

I am not all that smart when it comes to engines but it can't be good when chunks of stuff comes out of the tailpipes that looks like tare or maybe its carbon build up or something I ant sure but I think I'm gonna have to get a new engine for sure now



 
Low priced Genuine GM Auto Parts
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