GM block #'s
Thread Starter
Intermediate
Joined: Nov 2009
Posts: 38
Likes: 0
From: Arizona
GM block #'s
where is the best place to type in a block # and get it's year and anything else???? The # is... 3970010 and next to it has GM 33.... if anyone can help, I appreciate it.
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Thread Starter
Intermediate
Joined: Nov 2009
Posts: 38
Likes: 0
From: Arizona
Are you telling me the block is for a 69? I just got a 69 convertable and it has a bb 396 in it.... I wanted to take it out and if this is the case.... I know I will and put the 350 in it..... What makes it a matching #'s car??? It is a 4 bolt as well.... thanks
Team Owner
Joined: Sep 2006
Posts: 31,173
Likes: 4,250
From: Westminster Maryland
Hi RM,
There is a long list of parts that make up a numbers matching car. ( Without even thinking about whether the part is the original part the car left St.Louis with.)
On the block things to check are the block casting number and date on the rear flange of the block and the front stamp pad (in front of the right side head) for the engine assembly date with suffix code and the serial number derivative.
Here's an example of a 71 350/270 built in Jan 71. The engine was built the 7th of January and went into car number 6589.
I hope this gets you started.
Regards,
Alan
There is a long list of parts that make up a numbers matching car. ( Without even thinking about whether the part is the original part the car left St.Louis with.)
On the block things to check are the block casting number and date on the rear flange of the block and the front stamp pad (in front of the right side head) for the engine assembly date with suffix code and the serial number derivative.
Here's an example of a 71 350/270 built in Jan 71. The engine was built the 7th of January and went into car number 6589.
I hope this gets you started.
Regards,
Alan
Last edited by Alan 71; Nov 14, 2009 at 04:43 PM.
Team Owner
Joined: Sep 2006
Posts: 31,173
Likes: 4,250
From: Westminster Maryland
Hi RM,
TJA looks like it's a block from, or intended for, a 73 or 79 truck. The block casting number will help determine which year.
I'm not sure why there's no vin stamp.
Regards,
Alan
TJA looks like it's a block from, or intended for, a 73 or 79 truck. The block casting number will help determine which year.
I'm not sure why there's no vin stamp.
Regards,
Alan
Last edited by Alan 71; Nov 14, 2009 at 06:34 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
