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#1
07-09-2006, 10:27 PM
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Odd '163 intake
Hey guys!
I own several of the 3933163 intakes and have seen tons of them over the years. I ran across this today and was instantly stumped. It's an older style 3933163 intake with a spread bore pattern for the carb.. Anybody ever seen anything like this before? Could it be for marine applications? If so, wouldn't it still be a different part number? This is a strange one.....  Steve   
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#2
07-09-2006, 10:45 PM
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Re: Odd '163 intake
Looks like someone modified a 163 probably for racing where they had to run a quadrajet.
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~JAG~ NCRS#65120 68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car #21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built. 71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist. NUMEROUS Lemans blue Camaros, Monza Red and Daytona Yellow Corvettes & a Chevelle or two... Survivors, restored cars, & other photos https://picasaweb.google.com/lh/myphotos
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#3
07-10-2006, 12:34 AM
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Re: Odd '163 intake
The marine-intakes I have seen all had brass waterpassages.
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II. 
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#4
07-10-2006, 01:40 AM
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Re: Odd '163 intake
I believe the intakes with brass passages carried a different part number. The later 163 intakes had the snowflake and firing order is different spots. Possibly a late 70's service part? It sure would look the part one a carb was mounted.
Jason Jason
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#5
07-10-2006, 01:47 AM
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Re: Odd '163 intake
Give us a straight down shot directly over the carb mount surface looking into the plenum and an oblique view from one of the front corners would be great (I want to see the machining marks in the secondary openings).
I beleive that it is a standard 163 with the plenum opening for the carb modified.
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~JAG~ NCRS#65120 68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car #21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built. 71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist. NUMEROUS Lemans blue Camaros, Monza Red and Daytona Yellow Corvettes & a Chevelle or two... Survivors, restored cars, & other photos https://picasaweb.google.com/lh/myphotos
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#6
07-10-2006, 07:16 AM
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Re: Odd '163 intake
I think you can see the step where the secondaries were machined in instead of cast in, in the top right picture.
I have had them like this in the past, where the intake was modified to work with Q-jets without using a spacer/adapter. Eric
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#7
07-10-2006, 09:17 AM
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Re: Odd '163 intake
That's all the images I have of this intake.
Julian - You've seen '163 intakes with a spread-bore pattern from the factory before? That doesn't make any sense. The '163 intake was an SHP item and Rochesters were not. I thought this was an oddity, now I'm even more confused. Steve
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#8
07-10-2006, 03:32 PM
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Re: Odd '163 intake
Steve,
Sorry for the confusion. I have had a few that were "modified" to be used with a Q-jet carb. They were not factory production intakes. One of them was done using hole saws to cut the larger openings, because the guy didn't have a boring head for his mill. You can imagine what it looked like. Some people just won't run a Holley carb and have to have a Q-jet to be happy. Again, sorry about the confusion.  Eric
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#10
07-12-2006, 09:47 AM
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Re: Odd '163 intake
Here's an original '163 intake. Guess someone could have
used a hole saw or similar to open up the intake in question for a Rochester. Sure hope they didn't try to run that setup against a set of oval port heads. 
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