engine numbers ? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 06-02-2002, 09:47 PM
Registered User
Join Date: Jun 2002
Location: Las Vegas
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post engine numbers ?

I have a Jag XJS with a 350 chevy conversion that has been somewhat bodged! (english expression for screwed up) In order to meet smog requirements I must add smog equipment etc and need to know the model of car the engine (a remanufactured) that it came from....engine block numbers say GM Mexico 3970010... anyone know how to figure this one out?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-03-2002, 02:55 AM
Tom Tom is offline
Join Date: May 2001
Location: agawam ma
Posts: 323
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts

thats the block casting number,it means 4inch bore,made in mexico, hi nickel alloy.might not be a 350 but probably is,but doesn't tell anything about the engine.If I had to guess I'd say it was a chevy target motor made before 1978,9.0 cr 4 bolt mains,cast pistons,but thats just a guess.If I want it to pass emmissions test I would get an 85/6 tune port unit 2 cats and an AIR pump,once the test is done you could remove the cats and take the belt off the pump for better performance
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-03-2002, 04:28 PM
HotRodS10's Avatar
All Throttle...No Bottle
Join Date: Apr 2002
Location: SW Louisiana
Age: 45
Posts: 92
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts

That casting number was used for 1969 302's, 69 327's and 69-80 350's. Since your car has a 350 conversion I would guess its a 350 if you had it done somewhere. The casting number does not determine if its a high nickel block though....that info is found under the timing chain cover, 020 means 20% nickel. I think I would check out the emissions setup on some 1980's trucks, since they're more likely to have a 350, and go from there. I have an 86 silverado and I think all it had were cats and a smog pump. Good luck, HRS10
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-03-2002, 08:36 PM
E.T. divided by $ spent= Speed
Last photo:
Join Date: May 2002
Location: NYS america's unwiped butt
Age: 37
Posts: 1,858
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts

One way to approximate the year is to see what side the dip stick is on. 1979 and back had it on the driverside wile 80-86 had it on the pass. side. 79 and back only had cats,egr,vapor can,thermo aircleaner(well at least on my 78 anyway). Also check on the block tab in back of the water pump under the altenator for a three letter code (example CMJ) look it up in a MOTOR'S manual it should tell you what year and models it was out of. Good Luck
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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

All times are GMT -6. The time now is 05:42 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.