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XXD engine code = 164 FC engine?
Posted by: Caveman_1960 ()
Date: October 10, 2017 07:06AM

I just picked up a 1964 500 coupe that had a "new" engine - not a rebuilt one installed at some point in the past. I checked the number on the block and it reads "XXD". I think this is the 164 cid block with provisions for both types of oil dipsticks so it could be used in a car or truck or Lakewood. Does this sound correct? Anybody need one of these? I know the engine turns over, but I have not tried to start it yet. - Caveman Pete

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Re: XXD engine code = 164 FC engine?
Posted by: Phil Dally ()
Date: October 10, 2017 07:10AM

These are notes to myself from the universal raffle engine case search...no XXD yet.

According to the table in Helt's book, complete engine assemblies were coded as follows:

XXO = 60-63 2-carb engine universal replacement

XXZ = 64-67 2-carb engine non-AIR replacement

XXA = 64-6 4-carb engine non-AIR replacement

Bob also notes there were lots of exceptions and that replacement cases were also blank.

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Re: XXD engine code = 164 FC engine?
Posted by: cnicol ()
Date: October 10, 2017 01:06PM

My XXA 140 also had the universal crankcase with FC/Wagon dipstick hole (plugged) so I don't think that feature means much about the intended application; it just makes it fit more, um, universally.grinning smiley

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: XXD engine code = 164 FC engine?
Posted by: MattNall ()
Date: October 10, 2017 01:19PM

I have a UNSTAMPED case...no FC hole...built as a 140 by Mike-Mike here 12 years ago... it's a spare now ...set up for LM Powerglide [ my '67 ]





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: XXD engine code = 164 FC engine?
Posted by: ral1963 ()
Date: October 10, 2017 02:00PM

I'll have to get with Bob and review my notes as I had this recorded...I may have the XXA and XAA codes reversed.

XXO = 60-61 95/98 HP Manual
XXR = 62-63 102 HP Manual
XXZ = 64-67 95/110 HP MT/PG
XXA = 65-67 140 w A.I.R
XAA = 65-67 140 non-smog

Rick Loving
Corvair historian & chronicler of useless facts
CORSA
Performance Corvair Group
Chicagoland Corvair Enthusiasts

RAL1963@COMCAST.NET
Just south of Chicago IL

Current Rides
63 Sprint Vert 140/4sp

Past Rides
66 Turbo Coupe 180/4sp
60 700 Sedan 80hp PG
63 Monza Vert 102hp 4 spd
63 Monza Coupe 140hp 4 spd
63 700 Sedan 80hp 3 spd
64 Monza Vert 110hp 4 spd
64 Monza Coupe 95hp 3 spd
64 Monza Sedan 110hp PG
65 500 Coupe 95hp 4 spd
65 Monza Coupe 110hp PG
65 Corsa Coupe 140hp 4 spd
68 Monza Vert 140hp 3 spd

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Re: XXD engine code = 164 FC engine?
Posted by: ral1963 ()
Date: October 10, 2017 02:04PM

Pete, can you get a picture of the XXD code? Are you sure it isnt XX0 ?

I have never seen a XXD and would love to have a pic of it for my collection.

Rick Loving
Corvair historian & chronicler of useless facts
CORSA
Performance Corvair Group
Chicagoland Corvair Enthusiasts

RAL1963@COMCAST.NET
Just south of Chicago IL

Current Rides
63 Sprint Vert 140/4sp

Past Rides
66 Turbo Coupe 180/4sp
60 700 Sedan 80hp PG
63 Monza Vert 102hp 4 spd
63 Monza Coupe 140hp 4 spd
63 700 Sedan 80hp 3 spd
64 Monza Vert 110hp 4 spd
64 Monza Coupe 95hp 3 spd
64 Monza Sedan 110hp PG
65 500 Coupe 95hp 4 spd
65 Monza Coupe 110hp PG
65 Corsa Coupe 140hp 4 spd
68 Monza Vert 140hp 3 spd

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Re: XXD engine code = 164 FC engine?
Posted by: Phil Dally ()
Date: October 10, 2017 02:24PM

Thanks Rick...I just updated my notes.

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Re: XXD engine code = 164 FC engine?
Posted by: Bob Helt ()
Date: October 11, 2017 09:58AM

Please note that the codes listed in my current editions are as follows.


95/98HP MT XXO

102HP MT XXR

95/110HP MT/PG XXZ

140HP W/AIR XXA
140HP W/O AIR XAA

THOSE ARE ALL WE KNOW

Bob Helt

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Re: XXD engine code = 164 FC engine?
Posted by: ral1963 ()
Date: October 11, 2017 11:37AM

We know there is an XO code...and I am speculating that it is 1960-61 80hp replacement case...but that has not yet been proven.

Rick Loving
Corvair historian & chronicler of useless facts
CORSA
Performance Corvair Group
Chicagoland Corvair Enthusiasts

RAL1963@COMCAST.NET
Just south of Chicago IL

Current Rides
63 Sprint Vert 140/4sp

Past Rides
66 Turbo Coupe 180/4sp
60 700 Sedan 80hp PG
63 Monza Vert 102hp 4 spd
63 Monza Coupe 140hp 4 spd
63 700 Sedan 80hp 3 spd
64 Monza Vert 110hp 4 spd
64 Monza Coupe 95hp 3 spd
64 Monza Sedan 110hp PG
65 500 Coupe 95hp 4 spd
65 Monza Coupe 110hp PG
65 Corsa Coupe 140hp 4 spd
68 Monza Vert 140hp 3 spd

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Re: XXD engine code = 164 FC engine?
Posted by: cnicol ()
Date: October 11, 2017 04:13PM

ral1963 Wrote:
-------------------------------------------------------
> We know there is an XO code...and I am speculating
> that it is 1960-61 80hp replacement case...but
> that has not yet been proven.

I'm thinking that's not a "replacement case" because the stamping identifies the engine assembly date and configuration. A replacement case is just an empty case, not an assembled engine.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: XXD engine code = 164 FC engine?
Posted by: Lane66m ()
Date: October 11, 2017 04:21PM

Who knows maybe the XO engine was a production line replacement due to unexpected failure and they built a quick replacement to move car off line.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: XXD engine code = 164 FC engine?
Posted by: ral1963 ()
Date: October 11, 2017 04:35PM

Sorry, bad choice of words there on my part...I didn't mean bare case..

meant to say..

> We know there is an XO code...and I am speculating
> that it is 1960-61 80hp replacement engine...but
> that has not yet been proven.

Rick Loving
Corvair historian & chronicler of useless facts
CORSA
Performance Corvair Group
Chicagoland Corvair Enthusiasts

RAL1963@COMCAST.NET
Just south of Chicago IL

Current Rides
63 Sprint Vert 140/4sp

Past Rides
66 Turbo Coupe 180/4sp
60 700 Sedan 80hp PG
63 Monza Vert 102hp 4 spd
63 Monza Coupe 140hp 4 spd
63 700 Sedan 80hp 3 spd
64 Monza Vert 110hp 4 spd
64 Monza Coupe 95hp 3 spd
64 Monza Sedan 110hp PG
65 500 Coupe 95hp 4 spd
65 Monza Coupe 110hp PG
65 Corsa Coupe 140hp 4 spd
68 Monza Vert 140hp 3 spd

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Re: XXD engine code = 164 FC engine?
Posted by: JimBrandberg ()
Date: October 12, 2017 04:35AM

I had an engine here that was a replacement crankcase and capable of containing a LM crankshaft but removing the top cover I found EM crankshaft inside. It was few years ago and I don't even remember who's Corvair it was. I put the information in the Notes I always furnish along with Invoice.
Jim Brandberg
Isanti, MN
CorvairRepair.com

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Re: XXD engine code = 164 FC engine?
Posted by: texas yenko dude ()
Date: October 12, 2017 05:26AM

The original assembly line installed 140hp in my 69' Monza coupe #880 is a universal cast block. It has both 'stamped lines' in it with the assembly date/hp code and the partial VIN. Kind of crazy, but it was 69, so anything is fair game with it.

Texas YENKO Dude
YS-070
YS-199
YS-320
Southeast of Disorder


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Re: XXD engine code = 164 FC engine?
Posted by: Bob Helt ()
Date: October 12, 2017 07:44AM

It seems to be time to back off and look at the big picture.

Limited information is available on replacement (service) engines and partial engines. These engines and partial engines were built separately at Tonawanda from the engines that went into production vehicles and were sold by the Chevrolet Dealers.

A) First, there were replacement Corvair crankcases that were available from the Dealers in several configurations. Some were just the bare crankcases, for both 140 / 145 and 164 CID engines. These have no code stamped on them but the mechanic may have stamped the code of the crankcase being replaced.

cool smiley Next, there were available partial crankcase assemblies for both CIDs with a standard crankshaft and a low-hp camshaft already installed. You had to install a high-hp cam for the higher horsepower requirements. Turbo engines were expected to use the bare case. Some may have received a variety of markings, such as “W”, or “Z” according to the desires of the installing mechanic.

C) Lastly there were the Service or replacement engines (crate engines) that came mostly assembled, but without many
items such as clutch, distributor, carburetors, spark plugs, sheet metal, etc. These were configured for specific displacement
and HP use but were considered "universal engines" since they could be configured by the mechanic for either MT or PG
use. (That's why the clutch, carburetors, and distributor were missing, with the correct items to be installed by the mechanic).
The suffix codes for these replacement engines (as currently known) are shown in my book, THE CLASSIC CORVAIR
Starting 19 Sept 1968 according to a Dealer Service Bulletin, replacement engines received a stamping of “CE” (For
Chevrolet Engine) followed by a single digit for the model year (ex. 8 for 1968) and then followed by an engine serial number
running from 50000 to 79999. such as CE855024 for example.
These replacement crankcases and factory supplied replacement engines are identified in the appropriate-year Parts
Manual P&A 30C, but no Suffix codes are given. See the P&As for details on these engines. Note that these replacement
engines were available for many years after the end of production, despite the fact that they are shown here for specific
years.
If you find any errors or additional information on these crate engines, please inform your author, Bob Helt, at
Bobhelt@aol.com.

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Re: XXD engine code = 164 FC engine?
Posted by: cnicol ()
Date: October 12, 2017 08:09AM

Partial crankcase... that's a new one on me but I just looked in the P&A 30 and there they are in group 0.030. I've been in the P&A30 almost daily since the '70s. How did I miss that one? I guess you learn (or relearn) something every day. Thanks Bob!

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: XXD engine code = 164 FC engine?
Posted by: Caveman_1960 ()
Date: October 19, 2017 04:51PM

Turns out the XXD engine is really a XXO engine. We hauled the '64 500 coupe home today and I was able to clean it up a bit. The engine code reads T0225XX0. All of the engine sheet metal is for a 1964 164 cid engine, but that could be because it is from the original engine that was replaced? I will have to get underneath and check the right side of the block to see if it is a 1963 replacement engine or a 1964. Here's hoping for the 1964!! - Caveman Pete

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Re: XXD engine code = 164 FC engine? UPDATE
Posted by: Caveman_1960 ()
Date: November 12, 2017 05:17PM

This engine is a real mystery to me. The block is a 164 cid. It has the provision for a lower (FC-Lakewood) oil fill/dipstick location as well as the conventional dipstick through the turkey roaster for all Corvair cars. It has a cast iron crankshaft pulley. The heads appear to be 1966 and later with the larger bolts to attach the top shroud all along the sides. Casting #'s on the heads read 3886250. They both appear to be re-stamped from 3886240. Either # codes to a 145 cid engine that would have the two different sizes of top shroud bolts. So what gives? Any ideas out there? Is this a really rare service engine that should be worth mega bucks? Do I need an updated version of the Corvair Junkyard Primer???? - Caveman Pete

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Re: XXD engine code = 164 FC engine?
Posted by: caroseiii ()
Date: November 12, 2017 05:52PM

The replacement heads cast after 66 were 3/8-16. That explains the shroud bolt inconsistency. It’s a 145 replacement all around I’m pretty sure.
Crawford

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Re: XXD engine code = 164 FC engine?
Posted by: Caveman_1960 ()
Date: November 12, 2017 05:58PM

So would that mean that they used a 164 cid case and installed 145 innards? Since the case is what makes an FC engine unique I guess one could put a late crank in this one and get to 164 FC nirvana?

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