Leaking Intake - Gotta Love It - The 1947 - Present Chevrolet & GMC Truck Message Board Network

javadoc · 10-01-2011, 08:37 PM

I've been chasing this oil leak since I put the 383 into the '64, and this whole time I thought it was the mechanical oil pressure sender on the back of the block. Turns out that it's the intake manifold.

I got tired of screwing with it and took it to the shop down the street yesterday. They've had it, and still have it, trying to seal the intake down. Seems that the block was machined a bunch. Their latest attempt is a bunch of Ultra Copper. I'm hoping that it holds. I left the truck down there overnight to let the stuff set up for a full 24hours.

Anyone have any other suggestions? It looks like the big issue is in the valley. I don't have any photos since the truck's down the road currently.

awbrown · 10-01-2011, 08:40 PM

I have run into the same thing .. I had one that was cut so much it touched the chime rail, so I milled it .100 accross the intake mating surface and it was fine ,. I dont normally use the end gaskets,just silicone..........

**Captainfab** · 10-01-2011, 11:48 PM

It sounds like you used the end gaskets on the intake to block? I used to use them all the time, but anymore I just use a good bead of RTV black,front and back. That is what is recommended these days.

Mechanic77 · 10-02-2011, 03:46 PM

Instead of RTV, I would recommend getting some Permatex the Right Stuff....seals even better, doesn't deteriorate over time, and you don't have to wait for it to setup. The only bad thing about it is if you ever have to take it back apart.......I've had to pry intakes as much as 2" apart to get it to tear

Works awesome as a replacement for oil pan rubber end seals too....no leaks

Leadfoot Lambert · 10-02-2011, 05:19 PM

x 2 on the RIGHT STUFF = AMAZING!

javadoc · 10-02-2011, 05:42 PM

Got er back... no leaks! Now if Mr. Flakey would show up and buy the truck... he's promised to come by 4x in the past week. Love craigslist, hate selling the truck.

10-01-2011, 08:37 PM	#1
javadoc Hey Watch this... Join Date: Sep 2007 Location: Parker, CO Posts: 414	Leaking Intake - Gotta Love It I've been chasing this oil leak since I put the 383 into the '64, and this whole time I thought it was the mechanical oil pressure sender on the back of the block. Turns out that it's the intake manifold. I got tired of screwing with it and took it to the shop down the street yesterday. They've had it, and still have it, trying to seal the intake down. Seems that the block was machined a bunch. Their latest attempt is a bunch of Ultra Copper. I'm hoping that it holds. I left the truck down there overnight to let the stuff set up for a full 24hours. Anyone have any other suggestions? It looks like the big issue is in the valley. I don't have any photos since the truck's down the road currently. __________________ What have I gotten myself into now? 1964 Chevy Stepside - 383 hydraulic roller Vortec ... a work in progress 2000 Volvo V70R - 340awhp, 22psi, meth-injected of Porsche-eating fun. The grocery-getter on steroids

10-01-2011, 08:40 PM	#2
awbrown Registered User Join Date: Aug 2009 Location: Detroit MI Posts: 1,209	Re: Leaking Intake - Gotta Love It I have run into the same thing .. I had one that was cut so much it touched the chime rail, so I milled it .100 accross the intake mating surface and it was fine ,. I dont normally use the end gaskets,just silicone..........

10-01-2011, 11:48 PM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Leaking Intake - Gotta Love It It sounds like you used the end gaskets on the intake to block? I used to use them all the time, but anymore I just use a good bead of RTV black,front and back. That is what is recommended these days. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-02-2011, 03:46 PM	#4
Mechanic77 Registered User Join Date: Nov 2010 Location: Burrton, KS Posts: 215	Re: Leaking Intake - Gotta Love It Instead of RTV, I would recommend getting some Permatex the Right Stuff....seals even better, doesn't deteriorate over time, and you don't have to wait for it to setup. The only bad thing about it is if you ever have to take it back apart.......I've had to pry intakes as much as 2" apart to get it to tear Works awesome as a replacement for oil pan rubber end seals too....no leaks __________________ Pro Touring 1964 C10-Under Construction http://67-72chevytrucks.com/vboard/s...d.php?t=441627 Project '65 Short Step Daily Driver http://67-72chevytrucks.com/vboard/s...d.php?t=661948

10-02-2011, 05:19 PM	#5
Leadfoot Lambert Registered User Join Date: Jan 2011 Location: Saco, Maine Posts: 377	Re: Leaking Intake - Gotta Love It x 2 on the RIGHT STUFF = AMAZING! __________________ 65 Chevy short fleet 350 5 speed, soon to be LSX powered 65 F100 short fleet 91 Heritage softail 94 Fatboy 11 Softail Deluxe [wife's bike] 13 Streetglide http://www.youtube.com/watch?v=yMFMw...eature=mh_lolz

10-02-2011, 05:42 PM	#6
javadoc Hey Watch this... Join Date: Sep 2007 Location: Parker, CO Posts: 414	Re: Leaking Intake - Gotta Love It Got er back... no leaks! Now if Mr. Flakey would show up and buy the truck... he's promised to come by 4x in the past week. Love craigslist, hate selling the truck. __________________ What have I gotten myself into now? 1964 Chevy Stepside - 383 hydraulic roller Vortec ... a work in progress 2000 Volvo V70R - 340awhp, 22psi, meth-injected of Porsche-eating fun. The grocery-getter on steroids

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