Small Block Chevy Exhaust Manifold Bolt Sheared

   / Small Block Chevy Exhaust Manifold Bolt Sheared #11  
Dave,

It just dawned on me. But, do you guys salt your roads in the winter? If so that is going to make removing bolts a lot harder. And since this engine is a high mileage engine you might want to start hunting for a good used engine from a recycler or salvage yard. Then just swap out the engine. Your engine's timing chain is prolly ready to jump time due to being stretched out. The rings and bearings are prolly on their last legs. and I'm sure the cam is not far behind. I know it has been maintained very well, but it is still a high mileage engine. B.
 
   / Small Block Chevy Exhaust Manifold Bolt Sheared
  • Thread Starter
#12  
My area of the People's Republik of Maryland doesn't receive a lot of snow. We get an ocassional coastal storm (Noreaster) where we stay in the cold sector and pick up a good snowfall but we are normally east of the snow/rain line. Second owner lived close to the Chesapeake Bay, took its toll on the brake and fuel lines, have been replacing as necessary. Only major issues at this point are entire front end rebuild and AC service. Next minor job, the dreaded weeping oil cooler lines. Really like this truck, body panels are still old school thick as well as the frame. Wife drives a 2003 K1500, it's much more civilized, rides like a car. I prefer the 94, much more truck like.

Engine has received regular oil changes, previous two owners, at 3K miles. I normally change the oil at around 7K miles, Delco filter and Rotella 15W-40 synthetic. Engine sounds good and runs strong. I'm sure compression is down a bit but I would be surprised if the rest of the internals weren't good for at least another 100K. 5.7 TBI isn't enough engine for a K1500 Silverado Suburban. It weighs in at about 5500 lbs with a tank of fuel and two passengers. I'm sure it felt a little slow off the showroom floor. Have the original window sticker, 34K in 1994.

If the engine does go south I see a 383 stroker in the future. Should make for a better truck.

Thanks,
Dave
 
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   / Small Block Chevy Exhaust Manifold Bolt Sheared #13  
You will probably think I'm nuts for suggesting this, but I think you would be better off in the long run to pull the motor if you have the facilities to do so...I realize not everyone does. It sounds like a lot more work but once you have it on an engine stand everything is a whole lot easier and you tend to end up with a better quality job to boot plus you have an opportunity to do a thorough inspection that you just can't do any other way. Also, with that many miles on it there's a good chance your intake manifold gaskets are about to start leaking coolant into the lifter gallery if they haven't already and it takes a minuscule amount of glycol to severely degrade your oil.
 
   / Small Block Chevy Exhaust Manifold Bolt Sheared
  • Thread Starter
#14  
Definitely a good idea, will have to wait until spring. If I go that route I would probably pickup a "good"
used engine to drop in while I go over the old engine.

Good thing about older trucks, for the most part plenty of room to work. Pulling the engine out of the Sub would probably take
about 4 hours. Another plus, lot's of SBC Chevys floating around for a pretty decent price. Even 383 strokers from a reliable
builder are reasonbly priced.

The Sub is my "winter vehicle", normally don't take my 2001 Ram/Cummins out in snow/salt (it's my baby,
my buddies make fun of me all the time for not taking out in snow/salt, I even try to avoid the rain :))

Pretty sure no coolant leak at this time, I monitor overflow bottle and raditor at least weekly, levels are always
the same. It leaks more oil than it burns, between the weeping oil cooler lines and the slight drip at the rear main.

Happy with the truck, will be keeping it as long as possible. It's getting "Historic" plates on Jan 2nd. No more
emissons inspection, $100.00 for two years registration, plus a reduction on the already low insurance. It doesn't
owe me anything, paid $4K for it 8 years ago with 159K on the odometer. Have done the exhaust cat back, radiator,
PS pump and lines,water pump, starter, alternator, fan clutch, wiper control module, class IV hitch on back. And
a rear barn door glass I broke strapping down a canoe, that's another story.

Only things I would change are the color, black looks good when clean but doesn't last long and is hot in summer
around here. Also wish it had the solid front axle with leafs and locking hubs. The torsion bar front end isn't bad,
actually has pretty good travel; however, hard to lift properly and can realistically only go up a few inches.

Thanks,
Dave

You will probably think I'm nuts for suggesting this, but I think you would be better off in the long run to pull the motor if you have the facilities to do so...I realize not everyone does. It sounds like a lot more work but once you have it on an engine stand everything is a whole lot easier and you tend to end up with a better quality job to boot plus you have an opportunity to do a thorough inspection that you just can't do any other way. Also, with that many miles on it there's a good chance your intake manifold gaskets are about to start leaking coolant into the lifter gallery if they haven't already and it takes a minuscule amount of glycol to severely degrade your oil.
 
   / Small Block Chevy Exhaust Manifold Bolt Sheared #15  
Hi Dave , I have a 96 thats about the same history as yours and 214k. I plan on keeping as long as poss, maybe your 94 was before the intake leak years, mine was repaired before i got it.

where you at in MD?
 
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   / Small Block Chevy Exhaust Manifold Bolt Sheared
  • Thread Starter
#16  
Southern AA county, almost in Calvert county.

The 94 350 TBI I have has the old intake, looks just like the intakes from as far back as I can remember.

I think the switched intakes when they dropped the TBI.

I'm actually looking for a nice 92 model year, still had the solid front axle with locking hubs.

Thanks,
Dave
 
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   / Small Block Chevy Exhaust Manifold Bolt Sheared #17  
I'm eastern QA county almost to DE. We also have VEIP.
 
   / Small Block Chevy Exhaust Manifold Bolt Sheared #18  
The 6.0L in the silverado's break the exhaust bolts too. I took the exhaust manifold off and got most of the broken ones out. There was one broke off flush with the head, called a buddy who is a much better mechanic than me and he came over and welded a nut to the flush broke off bolt and we got it out easily. I would have tried drilling, this was much faster
 
   / Small Block Chevy Exhaust Manifold Bolt Sheared #19  
dpdee, I feel for you. I hate working on old vehicles like that, especially old exhaust manifolds. ughh.
About as much fun as changing a wax ring.:laughing:
 

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