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Re: blown head gasket :eek:
shaggy #749201 June 03rd 2019 2:15 pm
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Will do, cheers JCD74


79 chevy G30 cobra camper conversion.
[Linked Image]
Re: blown head gasket :eek:
shaggy #752543 September 18th 2019 9:09 am
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So I've changed the inlet manifold gasket and replaced the radiator. The problem still persists but no issues with any cylinders misfiring or running issues so I still don't think it is getting into the cylinders.
Still want to cover other possibilities before taking the heads off.
Can water get into the oil without getting into the cylinders due to a bad head gasket?
Is there any other water to oil interchange point I should be looking at?
There is no oil cooler built into the rad just a tranny cooler, but is there an oil cooler built into the block on an SBC?


79 chevy G30 cobra camper conversion.
[Linked Image]
Re: blown head gasket :eek:
shaggy #752545 September 18th 2019 10:43 am
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Originally Posted by shaggy
So I've changed the inlet manifold gasket and replaced the radiator. The problem still persists but no issues with any cylinders misfiring or running issues so I still don't think it is getting into the cylinders.
Still want to cover other possibilities before taking the heads off.
Can water get into the oil without getting into the cylinders due to a bad head gasket?
Is there any other water to oil interchange point I should be looking at?
There is no oil cooler built into the rad just a tranny cooler, but is there an oil cooler built into the block on an SBC?


Hi Shaggy,

1. Yes. 2. Not positive, but, I don't think so. 3. No.
Unfortunately, If there is water mixing with the oil, or oil mixing with the coolant...

That motor is so clean, I wouldn't want to have to go that deep either Mate, but.

I still enjoy needling Leonard about my "Rebuilt" 327 shocked

Plus. William of Ockham came up with that pesky theory called Occam's razor.

Cheers! and Good Wrenching!

Re: blown head gasket :eek:
shaggy #752558 September 19th 2019 8:59 am
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OK thanks for the info Wedgy, Looks like resistance is futile and I'm gonna have to tear it down and fit new head gaskets.

worms rolleyes worms

If anyone else has any other suggestions for things to check before I get stuck into that let me know.


79 chevy G30 cobra camper conversion.
[Linked Image]
Re: blown head gasket :eek:
shaggy #752933 October 02nd 2019 4:42 pm
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Uncle Rust N Dents
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I wish I had something helpful to add, but I don't.

I'll be doing this myself soon as I just discovered oil in my coolant after the van started steaming off on cold starts.
Not the thing I wanted to find, that's for sure.

Hope the job goes easy for you, Shaggy.


[Linked Image from farm3.staticflickr.com]
Re: blown head gasket :eek:
shaggy #752952 October 03rd 2019 6:15 am
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I'm just putting an order together for rock auto to buy all the necessary parts.

Gaskets for the distributor / inlet manifold / exhaust headers / Cylinder Heads and a new set of cylinder head bolts. I'll get coolant, engine oil flush and fresh oil locally.

Anything I'm missing from that list?

Good luck with yours too Rusty, lets keep posting on this thread and hopefully it'll prove helpful to each other or fellow vanners.


79 chevy G30 cobra camper conversion.
[Linked Image]
Re: blown head gasket :eek:
shaggy #752993 October 04th 2019 2:06 am
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Uncle Rust N Dents
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That's a good idea.
I'll try to add if I can. I'm not quite sure yet how, if, and when I'm going to do mine.
I'm still a little stunned at the bad timing (I've already got too many stalled projects).


[Linked Image from farm3.staticflickr.com]
Re: blown head gasket :eek:
shaggy #753003 October 04th 2019 9:46 am
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Sell the rest ... fix the best !


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: blown head gasket :eek:
shaggy #753012 October 04th 2019 12:06 pm
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Originally Posted by shaggy
I'm just putting an order together for rock auto to buy all the necessary parts.

Gaskets for the distributor / inlet manifold / exhaust headers / Cylinder Heads and a new set of cylinder head bolts. I'll get coolant, engine oil flush and fresh oil locally.

Anything I'm missing from that list?



Valve cover gaskets. Plus have a quality machine shop that you trust check the heads if there is any question on condition. Save you a ton of heartache, time, and money.

Good Wrenching!

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