Blew rod through cylinder, suggestions on what to do next
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Joined: Jan 2009
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From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Blew rod through cylinder, suggestions on what to do next
My friend blew a rod in her 85 Firebird a few years back, wasn't there to hear the whole story, I just got bits of what the mechanic told her. It was a 2.8 L and I'm trying to figure out where to to go from there because I am going to HATE to see that car go. I was hoping I could get some suggestions on what would be the smartest choice from there, money is pretty tight.
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Blew rod through cylinder, suggestions on what to do next
Call around to all your local salvage yards. and '85-'89 Camaro 2.8 will work, and you should be able to get the short block assembly for under $150. Or a long block assembly for under $200. Including taxes and other little fees. Considering the price of head gaskets, and the challenge of adjusting the rockers, I'd go with a long block assembly if at all possible.
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Senior Member

Joined: Jan 2009
Posts: 611
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From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Re: Blew rod through cylinder, suggestions on what to do next
Alright, so say we get the long block assembly, what has to be done before the engine can be dropped in?
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Blew rod through cylinder, suggestions on what to do next
You just transfer everything else from the ruined engine to the replacement. The manifolds, the water pump, the front accessories, it's all very simple.
Thread Starter
Senior Member

Joined: Jan 2009
Posts: 611
Likes: 2
From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Re: Blew rod through cylinder, suggestions on what to do next
Awesome. I just worry about the other engine also going because it'll be just as old.
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Joined: Oct 2008
Posts: 6,319
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Blew rod through cylinder, suggestions on what to do next
Age isn't a killer of 2.8 rods. Excessive RPM is, and detonation is, but not age.
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If they look like they've been leaking, replace them.
The later 3.1l V6's were a little more stout. Still can't put it in 1st, floor it, and see how fast it will go down hill, but they are less likely to develop cracks with "normal" use.
The later 3.1l V6's were a little more stout. Still can't put it in 1st, floor it, and see how fast it will go down hill, but they are less likely to develop cracks with "normal" use.
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Joined: Oct 2008
Posts: 6,319
Likes: 19
From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Blew rod through cylinder, suggestions on what to do next
If you're gonna buy a long block, I see no outstanding reason to think about the head gaskets so long as the head bolts have never been loosened with tools. But expect to replace every other gasket.
Thread Starter
Senior Member

Joined: Jan 2009
Posts: 611
Likes: 2
From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Re: Blew rod through cylinder, suggestions on what to do next
I really appreciate the help. How much could you expect to pay to replace the gaskets?
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Joined: Oct 2008
Posts: 6,319
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Blew rod through cylinder, suggestions on what to do next
Use Fel-Pro or you WILL have leaks. Don't use any silicone either. If you want to use some chemical, use Edelbrock's Gaskacinch.
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