View Full Version : buick nailhead casting numbers???? help


kikinrods
06-29-2005, 03:14 PM
i just bought 2 buick nailhead motors and i am trying to find out exactly what they are. the casting numbers that are on the back of the block near the belhousing are 1165752 and the other is 1135752. i was told they came out of a 54 and a 56 buick. if anyone can help me with this i would appreciate it. i found the head numbers on the internet and it came up as ether a 264 or a 322. please help if anyone could tell me what i have.

suedesled
06-29-2005, 03:25 PM
i just bought 2 buick nailhead motors and i am trying to find out exactly what they are. the casting numbers that are on the back of the block near the belhousing are 1165752 and the other is 1135752. i was told they came out of a 54 and a 56 buick. if anyone can help me with this i would appreciate it. i found the head numbers on the internet and it came up as ether a 264 or a 322. please help if anyone could tell me what i have.
You are correct. One is a 264 and the other is a 322.

kikinrods
06-29-2005, 03:42 PM
how can you tell and which one is which?

You are correct. One is a 264 and the other is a 322.

RocketDaemon
06-29-2005, 03:46 PM
the 1954 is the 264 and the 1956 is the 322 thats for sure atleast
afaik 264's wasnt made in 1956

kikinrods
06-29-2005, 03:51 PM
that helps but we aren't even sure that is the exact cars they came out of or if they were the original motors in the cars. is there a way to decifer the casting number.

RocketDaemon
06-29-2005, 03:53 PM
if it is an 1956 322, you got the best 322 nailhead atleast.. i mean the 1953 wasnt so good, much more heavier then the 1956 one, and ahwell..

Judd
06-29-2005, 04:53 PM
Post the numbers stamped in the block deck opposite the dip stick and I can tell what it is, 57 and later motor will be stamped just in front of valley pan.

kikinrods
06-29-2005, 05:11 PM
numbers are v6546044 and i2947334
thanks

zman
06-29-2005, 05:26 PM
This page on Buicks.net (http://www.buicks.net/shop/engine_ident.html) should help you figure it all out.
and here's another casting numbers (http://www.atlantabuick.com/CastingNumbers.htm) for the newer Nailheads...

Judd
06-29-2005, 05:33 PM
[QUOTE=kikinrods]numbers are v6546044 and i2947334
thanks[/

The first one is a 264 from a 54 Special the second is a 264 from a 55 Special

kikinrods
06-29-2005, 05:37 PM
so is a 264 a good engine or do i have a pile of junk and can i find parts for them.
now don't tell me they are junk and you'll buy them to take them off of my hands.:rolleyes:

[QUOTE=kikinrods]numbers are v6546044 and i2947334
thanks[/

The first one is a 264 from a 54 Special the second is a 264 from a 55 Special

seymour
06-29-2005, 06:04 PM
i'd buy one. you got the tranny's for em?

kikinrods
06-29-2005, 06:08 PM
not for sale yet!!! no trannys.

Clark
06-29-2005, 08:53 PM
Easy way to tell the difference between a 322 and a 263 is a 322 has a harmonic balancer. The 264 does not.

I've got a 264 in the 32 right now. It runs good but wasn't easy getting parts or info on it. I had to figure a few things out for myself. The tranny (manual) was my buggest pain in the ass.
Clark

zman
06-29-2005, 08:58 PM
Clark loves Nailheads... :D:D:D

Clark
06-29-2005, 09:23 PM
Nailheads SUCK!!! :D

Hopefully I get my first long distance run in the thing next week
Clark

Judd
06-29-2005, 10:12 PM
Easy way to tell the difference between a 322 and a 263 is a 322 has a harmonic balancer. The 264 does not.

I've got a 264 in the 32 right now. It runs good but wasn't easy getting parts or info on it. I had to figure a few things out for myself. The tranny (manual) was my buggest pain in the ass.
Clark
Clark
not all 322's had balancer I know of a 53 322 here that doesn't (O didn't it is getting one during rebuild)

Clark
06-30-2005, 09:07 AM
Judd ...this is one of the reasons I hate nailheads. I get conflicting information all the time. Even from the experts (nailhead message board).

When I was trying to find out what my motor was the expert told me you can't tell by the casting #s. The best way to tell is by the balancer.

I guess I'm back to not knowing what's in my 32.
Clark

kikinrods
06-30-2005, 09:36 AM
well i don't think the harmonic balancer bit is going to help me. both of mine don't have one but one is just a short block and the other is missing parts off of it, and both have a threaded and keyed crank. any other clues? does anyone have any stock valve covers i only have one for both motors, need 3 more.

Sam F.
06-30-2005, 10:46 AM
I guess I'm back to not knowing what's in my 32.
Clark

if its the nailhead out of 1096's truck,,then i do know its a 1955,,,cuz i took it out of my buddies 55 buick special. he was supoosed to install a BBC in his car(car is still sitting),, it was a 2bbl engine.. it was in great running shape when we pulled it...i think i read you rebuilt it though,,

but to make things even more confusing,,i believe that motor or heads may have been replaced or rebuilt at some time since it had the lil "hot " tags on the heads(the tags that engine rebuilders put on rebuilt motors to know if you got them hot or not if there is a waranty issue..

sorry ,no help,,but i was kinda thinking it was a 264 since it had the 2bbl on it..

sam

Clark
06-30-2005, 11:00 AM
Sam ...that is the motor out of your old truck. I didn't rebuild it and it runs great. I've got a 56 322 with the harmonic balancer that will get rebuilt and go in the car in the future. It was also a 2 barrel motor. The mystery continues :D

Do you know why there was a set of holes drilled in the valve covers?
Clark

Sam F.
06-30-2005, 11:19 AM
ah,cool,,

Do you know why there was a set of holes drilled in the valve covers?
Clark
im not sure,,i wondered that myself,,
those covers came from the nashville swapmeet,and the spark plug covers came from a hamber,,i cant remeber was it Judd??,
i have the original valve covers in good shape if you want them.i think one has a ding in it.

sam

kikinrods
06-30-2005, 11:28 AM
by the way one of my motors has a 4 barrel intake on it but the other one is missing the intake. does that help on identifiying the motor.

Sam F.
06-30-2005, 11:30 AM
oh! i almost forgot,,i have a nailhead question too! ,,whats in this 64 rivi ,,

the aircleaner says 465 wildcat,,would that make it a 425???? assuming its the original engine and correct aircleaner???

thanks

suedesled
06-30-2005, 12:45 PM
If its the original motor and the aircleaner is also. Then yes it is a 425.

My take on the 264 is not to use them if you can find a 322 or bigger.

LeadSledMerc
10-11-2005, 05:29 PM
Marty gave me the casting numbers for 425 blocks but I'll be damned if I can find them. I called a guy about a suposed 425 he has for sale that came out of a 67 Riv. He said he couldn't find any engine numbers in front of the valley pan, but there are numbers cast in the block on top of where the trans bellhousing bolts up. He said they are B1364705. This is the same number that's on a few of my 401's. Can this casting number be used to identify 425 from 401?
I need to get back to this guy, so any help is appreciated.
Thanks, Keith

LeadSledMerc
10-11-2005, 05:36 PM
I found the casting number on a Buick site and it is calling out a 64-66 401/425. How can I determine if it's a 425. The owner said it has a single 4-brl.
Help?? Thanks, Keith

zman
10-11-2005, 05:37 PM
I posted two links up further that have the casting numbers you should need...

buicks.net (http://www.buicks.net/shop/engine_ident.html)

Casting numbers (http://www.buicks.net/shop/engine_ident.html)

Don;t knwo if they'll help you though... '67's didn't have Nailheads...'66 was the last year....

Brandy
10-11-2005, 05:52 PM
I found the casting number on a Buick site and it is calling out a 64-66 401/425. How can I determine if it's a 425. The owner said it has a single 4-brl.
Help?? Thanks, Keith

All Buick engine blocks has a two bolt main bearing cap bottom end. The easiest way to tell them apart besides checking the various bore sizes is to check deck height. You can also check the engine identification code. 1966 had MR for the 401 325hp "400" Gran Sport. MT for the 401 325 hp. MW for the 425 340 hp. MZ for the 425 360hp.

xxx

suedesled
10-11-2005, 08:09 PM
I found the casting number on a Buick site and it is calling out a 64-66 401/425. How can I determine if it's a 425. The owner said it has a single 4-brl.
Help?? Thanks, Keith
This is why we need the ID number. If you have a stock valley pan it will point right at it. There is an arrow stamped on the pan toward the pass. side of the pan and it points to it. You will find it just ahead of the edge of the valley pan on the same surface as the gasket.

LeadSledMerc
10-11-2005, 08:29 PM
Yea zman, I found the casting number on the buicks link from one of your old posts, thanks and yea I know 66 was the last year. The guy that has the engine tells me its a 67 but then again he tells me he can't find any numbers in front of the valley pan either. 410 or 425, the price I'm picking it up for along with a 400 tranny it really doesn't matter. Being a 425 will just be the cherry on top.
Thanks for the help guys
I posted two links up further that have the casting numbers you should need...

buicks.net (http://www.buicks.net/shop/engine_ident.html)

Casting numbers (http://www.buicks.net/shop/engine_ident.html)

Don;t knwo if they'll help you though... '67's didn't have Nailheads...'66 was the last year....

Brad54
10-11-2005, 11:58 PM
i just bought 2 buick nailhead motors and i am trying to find out exactly what they are. the casting numbers that are on the back of the block near the belhousing are 1165752 and the other is 1135752. i was told they came out of a 54 and a 56 buick. if anyone can help me with this i would appreciate it. i found the head numbers on the internet and it came up as ether a 264 or a 322. please help if anyone could tell me what i have.

For the record, the "Ultimate American V-8 Engine Book" by Peter C Sessler sucks. At least the Nailhead section. I've found a whole bunch of mistakes in it.

The 322 has a 4-inch bore, while the 264 has a 3.625-inch bore. That'll get you going if the heads are off.
The 264 was an totally different casting than the 322, so you can't simply bore a 264 out. However, the crank, rods and heads will interchange (heads will only interchange for the same years though. They changed the piston dome/combustion chamber shape each year from '53 to the middle of '55. Late '55 and '56 heads and pistons will interchange.)
264 was '54 and '55 only, and only in the Specials.
I don't remember what years they didn't run the balancer on the 322, but I know they didn't in '53. I'll find out what year the balancer came into being.
I'll also look in my Hollander interchange and see if I can track down those numbers for you to tell you what you have. Those books are in my shop right now--I'll get them in the next day or two and find out. (I really need to write that info down in my nailhead notebook too--I need to get ALL my references into one place). I've also got a full set of '54 Technical Service Bulletins, and a condensed set of '55 TSBs. Some info will probably be in there.
The 4bbl intakes only came on the 322--but I've swapped one onto the 264 in my '54 Special. The 4bbl intake design changed in '56, and is a better intake.

-Brad