Gain extra benefits by becoming a Supporting Member Click here find out how!
Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Join the Community todayDanchuk Catalog
Hellwig Products IncPerformance Rod & CustomEcklers AutoMotive
Nu-Relics Power Windows
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy

Ecklers AutoMotive
Username Post: Engine numbers help please        (Topic#357016)
65 Chev in NZ 
Poster
Posts: 4

Loc: New Zealand
Reg: 06-28-19
06-29-19 12:15 AM - Post#2769491    

I have a 283 in my SS Impala and I am trying to find out more information about it. I beleave it is the original numbers motor. The numbers on the back of the block is 3849852 and D265, and the front of the block is F0504GF, the heads are 3795896. I have found details on the heads and block, althoug I am not sure about the D265.How do I find details about what the number on the front of the block means. Can anyone help with where to find this info please??



 
Ecklers AutoMotive
rick1965 
Poster
Posts: 84

Loc: joliet ill
Reg: 12-07-16
06-29-19 05:23 AM - Post#2769497    
    In response to 65 Chev in NZ

letter f in the sequence stands for flint mich. foundry where the block was cast, 05 04 stands for casting date which would be may 4th 1965 g means 283 and f ending the sequence means there was a powerglide trans behind it.



 
Gaspains 
"5th Year" Gold Supporting Member
Posts: 316
Gaspains
Loc: Mankato, MN
Reg: 11-23-09
06-29-19 06:22 AM - Post#2769500    
    In response to 65 Chev in NZ

Welcome to Chevy Talk! Lots of good info here. You want to get into the reference section as soon as you can.

Is your car a right hand drive? If so, I believe it is Canadian built and may have slight variations in what follows for the front of the block stamping. Each engine had letters/numbers stamped into a pad on the passenger side cylinder deck when the engine was mated to the body. These are visible in front of the head. The “F” should represent the manufacturing plant for the car. The numbers represent the last digits of your VIN. The last letters represent the transmission bolted to the engine at the factory. I don’t have my resources at hand but am betting others will chime in with the F and GP decoding.

The long numbers beginning with 3 on the block and heads are GM part numbers. The “D265” represents the date the block was cast. It decodes as D=April, 26th day, 5=65. This is a valid date code for a 65 block. Later in the year would put it in to the 66 model run.

The quickest way to confirm originality is to compare the block stamping against your VIN. Good luck on it being original.

Kevin
1965 Impala SS Coupe
Regal Red with Black Interior
L74 327
M-20
3.31 Open, 12 bolt

65-66 FSCC #512
NIA #2832


 
65 Chev in NZ 
Poster
Posts: 4

Loc: New Zealand
Reg: 06-28-19
06-30-19 12:47 AM - Post#2769553    
    In response to Gaspains

That is great, thanx for your reply.



 
65 Chev in NZ 
Poster
Posts: 4

Loc: New Zealand
Reg: 06-28-19
06-30-19 12:48 AM - Post#2769554    
    In response to rick1965

Thanx for your reply, it is a great help.




 
65 Chev in NZ 
Poster
Posts: 4

Loc: New Zealand
Reg: 06-28-19
06-30-19 12:50 AM - Post#2769555    
    In response to Gaspains

Sorry,my car is a left hand drive. Everything I have so far says it is all mtching numbers, just trying to cross check. thanx for your reply is is helpful. I am new to this stuff.



 
centsless 
Contributor
Posts: 142
centsless
Loc: Forest Hill MD
Reg: 10-28-13
07-04-19 04:14 PM - Post#2769942    
    In response to Gaspains

I know for 1966 the VIN was not stamped in the block unless the engine was rated at more than 300 HP. The 283 was only rated at 195 and 220 HP. I think the best you can do is verify that the engine is "date correct". If the engine block and heads production dates are earlier than the vehicle production date, then chances are that it is the original. Usually what I have seen is that the engine date is a month or two prior to the vehicle build date, and the heads are a few weeks prior to the engine. Sorry its not definite, but it should be close.
"GF" is a 1965 Impala 283/195HP 2 barrel carb and powerglide.
My 1966 Caprice was missing its original 327, and I was fortunate to find a block that is 5 weeks earlier than the car. I am not building a chalk and crayon restoration, but it was cool to find a block that close to the original.

Bob
66 Impala convertible
66 Biscayne 427 2 door post
66 Caprice 4 door hardtop
66 Caprice 2 door
81 Corvette
96 DGGM Impala SS
01 S10
15 Silverado
2003 Crown Victoria LX Sport "Icky Vicky"
1965-66 FSCC member #530


Edited by centsless on 07-04-19 04:19 PM. Reason for edit: No reason given.

 
centsless 
Contributor
Posts: 142
centsless
Loc: Forest Hill MD
Reg: 10-28-13
07-04-19 04:25 PM - Post#2769943    
    In response to centsless

F is Flint Michigan plant
0504 May 4th
GF 283/195HP 2 barrel carb, pg transmission

D265 April 26, 1965

So the engine block was cast on April 26,1965 in Flint, and was assembled on May 4th of 1965

Hope that is a little better!

Bob
66 Impala convertible
66 Biscayne 427 2 door post
66 Caprice 4 door hardtop
66 Caprice 2 door
81 Corvette
96 DGGM Impala SS
01 S10
15 Silverado
2003 Crown Victoria LX Sport "Icky Vicky"
1965-66 FSCC member #530


 
Ecklers AutoMotive
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

316 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.102 seconds.   Total Queries: 16   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 07:16 PM
Top