69 400 ci

Old Sep 19, 2023 | 04:59 PM
  #1  
69shawn's Avatar
Thread Starter
Registered User
 
Joined: Jan 2014
Posts: 22
From: South Carolina
69 400 ci

Bought a 69 442 that needs restore some years ago. Finally getting round to working on it.
I pulled the (fouled) plugs and put marvel mystery oil in the cylinders before I turned it by hand.
I just realized it is not the original engine (VIN). It is a 69 G block with C heads but I noticed it has the
tabs on the left rocker cover to run the battery cable and the car is an automatic. The carburetor
is numbered for a manual transmission but the distributor is numbered for automatic.
If it is the 350HP engine will the distributor work or will it cause problems? (note the fouled plugs above).
Thanks for any advice. Shawn
Old Sep 19, 2023 | 08:46 PM
  #2  
Fun71's Avatar
Registered User
 
Joined: Feb 2013
Posts: 15,409
From: Phoenix, AZ
The distributor shouldn’t cause any issues. But I wonder how you concluded those parts were for MT / AT applications? Post the numbers and the experts here can say definitively what they are as so many online sources are woefully inaccurate.
Old Sep 20, 2023 | 07:07 AM
  #3  
joe_padavano's Avatar
Old(s) Fart
 
Joined: Mar 2007
Posts: 50,802
From: Northern VA
I hope you aren't subscribing to the myth that Qjet carb numbers are odd for MT and even for AT. The original carb for an AT car was 7029251. For an MT car it was 7029253.
Old Sep 20, 2023 | 11:44 AM
  #4  
acavagnaro's Avatar
Registered User
 
Joined: Aug 2014
Posts: 839
From: Western North Carolina
There's also a high likelihood that all of the things you described have been changed - many times - over the course of the car's life. It's a bit of a stretch to assume they're original to the engine in the car and the engine is a replacement. Have you checked the stamped numbers below the driver's side head? There are many references on the forum regarding where to find the pad and numbers.
Old Sep 20, 2023 | 02:54 PM
  #5  
69shawn's Avatar
Thread Starter
Registered User
 
Joined: Jan 2014
Posts: 22
From: South Carolina
Thanks for the replies. Engine block: 396026G
Quadrajet: 7029253
Distributor: 1111933
The engine VIN does not match the car VIN.
The engine is not original but period correct (which I just found out). What leads me to believe it is a manual trans engine
is the tabs mounted to the left valve cover. Battery positive cable on automatics ran over wheel well
back toward firewall, battery cable on manual trans jumped right across to engine and along the back
of the valve cover (held in place by tabs on valve cover) to firewall and down to starter.
The difference between 325hp automatic and 350hp manual from what I can find is cam, dist, and carb.
The timing is different between the two, 8deg vs 12deg.
Also, no tag on oil fill tube. Anything else I can check (without pulling cam) ? Thanks
Old Sep 20, 2023 | 02:58 PM
  #6  
joe_padavano's Avatar
Old(s) Fart
 
Joined: Mar 2007
Posts: 50,802
From: Northern VA
Is the VIN derivative on the block a 1968 or 69 number (second character is the year)? Understand that the factory initial timing specs assume a totally stock engine running gasoline that was available when the car was new. Between today's crappy gas and carbon buildup in the combustion chambers and who knows what's going on in the distributor, it's likely that neither of those numbers is best.
Old Sep 20, 2023 | 03:16 PM
  #7  
69shawn's Avatar
Thread Starter
Registered User
 
Joined: Jan 2014
Posts: 22
From: South Carolina
Number 9, I am guessing someone picked up a junkyard engine for a replacement and they needed a distributor.
Old Sep 22, 2023 | 12:13 PM
  #8  
CANADIANOLDS's Avatar
Registered User
 
Joined: Sep 2013
Posts: 2,927
Originally Posted by 69shawn
Thanks for the replies. Engine block: 396026G
Quadrajet: 7029253
Distributor: 1111933
The engine VIN does not match the car VIN.
The engine is not original but period correct (which I just found out). What leads me to believe it is a manual trans engine
is the tabs mounted to the left valve cover. Battery positive cable on automatics ran over wheel well
back toward firewall, battery cable on manual trans jumped right across to engine and along the back
of the valve cover (held in place by tabs on valve cover) to firewall and down to starter.
The difference between 325hp automatic and 350hp manual from what I can find is cam, dist, and carb.
The timing is different between the two, 8deg vs 12deg.
Also, no tag on oil fill tube. Anything else I can check (without pulling cam) ? Thanks
You can pull a valve cover and a set of rockers to measure the lobe lift off the cam going by the pushrod lift x 1.6

auto cams had .440” lift, manual cams were .472”

that’s assuming the cam is original to the engine
Old Sep 23, 2023 | 05:24 AM
  #9  
tiogatwister's Avatar
Registered User
 
Joined: Jan 2012
Posts: 168
From: Hartland Michigan
You could also check the back of the crankshaft to see if it has been machined for a pilot bearing.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
eou_edu
Parts For Sale
5
Sep 23, 2019 05:14 PM
eou_edu
Big Blocks
0
Apr 17, 2019 01:08 PM
501Paratrooper
Big Blocks
3
Jul 29, 2010 05:06 AM
agtw31
Parts For Sale
2
Jul 1, 2009 09:16 PM
Cameo White
Hurst/Olds
4
Jun 18, 2009 03:53 PM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 06:03 AM.