Pontiac Engine Decode help needed. - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 02-18-2014, 11:04 PM Thread Starter
 
Join Date: Jan 2014
Location: O'FALLON, Mo
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Pontiac Engine Decode help needed.

Hi All trying to find out year and size. Back by distributer on top of block is C 102. Head manifold has 7h1 and 350 stamped on block.
FireFox3434 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 02-19-2014, 10:21 AM
 
Norms68's Avatar
 
Join Date: Jul 2013
Posts: 110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Looks like 10 March 1972 (C=March 10=day 2=year) casting 350 with the 1972 heads, 175HP 1.96/1.66 valve size with originally a 7.6 compression ratio.

Found here: Cylinder Heads

-Norm
Norms68 is offline  
post #3 of 6 (permalink) Old 02-19-2014, 02:51 PM
 
Icefan71's Avatar
 
Join Date: Apr 2011
Location: Winfield, PA
Posts: 240
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Norms68 View Post
Looks like 10 March 1972 (C=March 10=day 2=year) casting 350 with the 1972 heads, 175HP 1.96/1.66 valve size with originally a 7.6 compression ratio.

Found here: Cylinder Heads

-Norm
Yep, thats what I have in my 72 Lemans. And the actual valve size is an odd combination, 1.96/1.77. I found out on another Pontiac site from a guy who builds engines. He's seen a few 7H1's and they all have that odd valve combo.
Icefan71 is offline  
 
post #4 of 6 (permalink) Old 02-19-2014, 10:18 PM Thread Starter
 
Join Date: Jan 2014
Location: O'FALLON, Mo
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the help all. I Have a 68 GTO that has that engine in it. With a saginaw 4 speed. Would that engine be a good engine to rebuild? It needs alot of work. If not what is it worth?Bringing the car back from the dead slowely lol.

Thanks
Tom
FireFox3434 is offline  
post #5 of 6 (permalink) Old 02-19-2014, 10:19 PM Thread Starter
 
Join Date: Jan 2014
Location: O'FALLON, Mo
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I did the vin on car and it is a true GTO.
FireFox3434 is offline  
post #6 of 6 (permalink) Old 02-20-2014, 07:29 AM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
"Good to rebuild"? Well, that depends quite a bit on you and what you want to do with the car. If you care about value, investment or resale, then no -- having a 350 in a 68 GTO hurts it a lot. Performance? again not so good. However, if you want a relatively economical driver, it's not a bad way to go.

Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Decoding GM Engine Help Needed FireFox3434 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 2 01-06-2014 02:59 PM
Opinions needed - what engine should I use? TK69tempest 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 34 04-05-2011 08:46 PM
326 Engine Needed Tommy Mac 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 5 01-08-2011 12:01 PM
'67 GTO engine codes - more detail needed Goat67 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 7 01-18-2010 02:07 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome