Am I going to be able to use these?
#1
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Car: '84 Camaro Sport Coupe
Engine: 355
Transmission: 700R4
Axle/Gears: 3.08
Am I going to be able to use these?
I picked up a junked Vortec 350 and I'm in the process of rebuilding it. The block is hardly worn and everything seems to be in good shape except while magnafluxing the heads I found one crack on each head, both in the same spot.
The red line is where its cracked. It's not a huge crack but I am worried about leaks and the crack spreading to the coolant passage above it.
Am I going to be OK with these because the crack isn't in the chambers or coolant passages? Or am I going to be best off in the long run just buying aftermarket replacements? These are going into a daily driver.
The red line is where its cracked. It's not a huge crack but I am worried about leaks and the crack spreading to the coolant passage above it.
Am I going to be OK with these because the crack isn't in the chambers or coolant passages? Or am I going to be best off in the long run just buying aftermarket replacements? These are going into a daily driver.
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Car: 1982 Z28
Engine: 388 SBC
Transmission: TH350 Lockup
Axle/Gears: 3.42
Re: Am I going to be able to use these?
Personally, with it being a daily driver, and the area where the crack is, I wouldn't be too concerned with it. You already have them, try it. if a year down the road they begin to leak, then replace them, just costs time and a head gasket.
But IMO I wouldn't be concerned, looks like someone tried to use the wrong bolt, or over tightened to me.
I'm sure someone will disagree, but its all your call whether you wanna save a little money and see if it works, or just spend it and not worry about it
But IMO I wouldn't be concerned, looks like someone tried to use the wrong bolt, or over tightened to me.
I'm sure someone will disagree, but its all your call whether you wanna save a little money and see if it works, or just spend it and not worry about it
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Car: 91 Bird
Engine: TPI 350
Transmission: 5-Speed
Axle/Gears: 2.77 posi
Re: Am I going to be able to use these?
I would bring them to a head and block shop. They have seen this before and can tell you if it is ok or not. How far into the head does it run?
I would be concerned that the crack would leak water into that bolt hole and travel up the bolt and into the valve cover
I would be concerned that the crack would leak water into that bolt hole and travel up the bolt and into the valve cover
#4
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Car: '84 Camaro Sport Coupe
Engine: 355
Transmission: 700R4
Axle/Gears: 3.08
Re: Am I going to be able to use these?
I think I'll use them for my budget's sake and hope for the best!
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Car: Yes
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Axle/Gears: Behind me somewhere
Re: Am I going to be able to use these?
"Torquing the bolt correctly" won't stop it from leaking.
However, using some kind of NON-HARDENING sealer (NOT silicone) both on the bolt threads as is necessary anyway, and also under the head of the bolt, WILL stop leaks.
I'd recommend the Loctite/Permatex "automotive thread sealer w Teflon".
However, using some kind of NON-HARDENING sealer (NOT silicone) both on the bolt threads as is necessary anyway, and also under the head of the bolt, WILL stop leaks.
I'd recommend the Loctite/Permatex "automotive thread sealer w Teflon".
#6
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Car: 1982 Z28
Engine: 388 SBC
Transmission: TH350 Lockup
Axle/Gears: 3.42
Re: Am I going to be able to use these?
Sealer, or maybe even a "flat seal" will keep it from leaking past the bolt, sort of like a rubber washer, perhaps? I think you'll be alright. Like you said, for budgets sake