Big Block Intake manifold
 

Does anyone know the history of an intake casting # 3933163 date coded March 3, 1969.

This post may go thru twice due to technical issues.

Re: Big Block Intake manifold
 

Randy,
It's an aluminum manifold from an L78 396.
Martin

Re: Big Block Intake manifold
 

Is it for sale?

Re: Big Block Intake manifold
 

Stefano,
My brother has a #3933163 he wants to sell. He does not know the date code, but if you are interested let me know and i might be able to arrange for pictures so you can see it.

Randy H,
My brother says that this manifold may have been correct for a 69 COPO 427 425 horse in Camaro and Chevelle applications and the L-78 396 in a Nova.

Brandon

[Edited by lowlySS350 (04-14-2002 at 05:25 PM).]

Re: Big Block Intake manifold
 

GM still sells this manifold new, but if it is a dated one with no welding done or needed. I would be interested. Let me know.

Thanks

Re: Big Block Intake manifold
 

If you could tell me where the date code is located on the manifold I will find out if it is dated.
Brandon

Re: Big Block Intake manifold
 

Brandon,
The date code will be on the backside of the intake. I can't remember for sure off hand, but I believe that it is covered by the rivited oil splash shield.
There are visual differences between the current production 163s and the vintage ones.
Let me know his price regardless of the date.
Thanks,

Stefano

Re: Big Block Intake manifold
 

Stefano,
I got some info, there isn't a steel oil sheild, only a thick aluminum sheild and no date code that he could find. There is a Winters snowflake, I don't know if the new ones have one. But the mounting holes have been elongated to fit a tall deck block. Probably wouldn't be visible once it was bolted down. But it isn't perfect, so probably not the best for a good resto. He is asking $150, if you are still interested I will try to arrange for pictures so you can look at it.

Brandon

[Edited by lowlySS350 (04-20-2002 at 02:32 AM).]

Re: Big Block Intake manifold
 

I have a 3393198 manifold. The last 2 digits are ground off and hand stamped.

Was told it came from a ZL-1 but not sure. has a casting date of 8-1-68.

What's it worth??

thanks

Re: Big Block Intake manifold
 

for the 198 manifold i've seen low 200's for tampered with to 400-500 n.o.s. It's like the zl-1 heads, the less untampered with the better. I've got both heads and manifold and I'd say the manifold is only worth 250 because it's half polished and the heads about half of what an untouched set would bring in because of a brownfield port-job.

Re: Big Block Intake manifold
 

This manifold I have is in good shape. No grinding, or polishing, or welds. No helicoils or stipped holes. However the finish is as dirty as can be expected from sitting around for 33 years.

How would one go about cleaning it and getting it back to as mint conditon as possible, without wrecking the hand stampings. I'v heard about this reskinning process, but I'm unfimiliar with this.

Re: Big Block Intake manifold
 

This intake could be either COPO or L78. I have another 163 intake. It has no Winters foundry marking and the numbers read left to right in front of the carb mounting pad rather than out the top intake runner. It has no date code either. These intakes didn't have the steel splash shield rivetted to the bottom as did the small block intakes. There is a splash shield you can buy from GM that snaps between the heads to keep oil off the underside of the intake.
To get the intake back into as new condition I give them a thorough cleaning in soap and water then have them glass beaded with new bead followed by a second scrubbing to get rid of all the glass bead dust. The surface finish is as original and will be very easy to keep clean. Sand blasting will create a satin finish which is both incorrect and hard to clean.

Re: Big Block Intake manifold
 

Thanks very much to all for the replys in regards to my 198 intake.

This site is very cool!!!!