| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
09-30-2002, 06:16 PM
|
|||
|
|||
Ok,this what I have it's a 67 gto, the motor in it has these numbers on the block 9790071, code XH, prodution #0654489. The question is,is this a 67 or 68 block. can any one help?
|
|
#2
09-30-2002, 06:16 PM
|
|||
|
|||
|
Ok,this what I have it's a 67 gto, the motor in it has these numbers on the block 9790071, code XH, prodution #0654489. The question is,is this a 67 or 68 block. can any one help?
|
|
#3
09-30-2002, 06:41 PM
|
||||
|
||||
|
My book says that XH was a big car motor for '67 and '68.
Give me a thumbs up, tell me "Nice Car!", but for god's sake, don't call it an Impala. |
|
#4
09-30-2002, 06:49 PM
|
|||
|
|||
|
To start with :You should have more numbers and letters on your block than you have sent in. The first group is going to be the serial # which will also have the year stamped within the number, it is located on the front Right side of the Block just below the area that the water pump bolts on . That is in the same area that you located the XH code. The first # should be a 2, this will stand for a Pontiac motor, the next two digits will be the year. The 9790071 Number should be the block casting number just behind the casting #8 cylinder on Rt. side of block. 9790071 crosses over to a 1969 400Cid motor. The XH code should be a 400/336 Hp . Send in your serial # Valley Numbers(located by the lifters) and head numbers if you are still not sure, but from what you have posted I think my info is correct on the Year and Motor size. Any more questions feel free to ask on line or E- Me.
|
|
#5
09-30-2002, 07:14 PM
|
||||
|
||||
|
__________________
"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
|
#6
10-01-2002, 07:40 AM
|
||||
|
||||
|
The block is probably a 1969.
The prodution #0654489 is called the Motor Unit Number,it's right above the XH. 69 and later engines had 7 digits,which this has. The block 9790071 shows it's a 1968 or 1969. There should be a cast date code back by the distributor beginning with a letter then 3 or 4 numbers. This will tell for sure when it was cast. [img]/infopop/emoticons/icon_cool.gif[/img] johnta1 Pontiac Power RULES !!! www.wallaceracing.com 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
|
#7
10-01-2002, 08:42 PM
|
||||
|
||||
|
What is the date code at the back of the block, near the distributer mounting pad?
Bill
__________________
Bill 64 GTO, tube chassis w/606" IA tall deck, PG & a pro geared Fab 9". 2750 lbs. 8.2550@164.17-1/4, 5.2901@131.97-1/8, 1.1981-60-ft. 8/10/08 
|
|
#8
10-02-2002, 03:06 PM
|
|||
|
|||
|
The casting date code reads C289 and the block # by the T.C. cover is 29P290413
|
|
#9
10-02-2002, 05:04 PM
|
|||
|
|||
|
KSGTO, C289 Becomes March 28,1969...29p290413, SECOND digit is year 1969.
|
|
#10
10-03-2002, 05:36 PM
|
|||
|
|||
|
Thanks for all the info. My next question is this can I install 67 exhaust manifolds on a 69 400 motor with 62 heads.I'd like to keep most of the car as much to the year as possible.
|
|
#11
10-03-2002, 05:58 PM
|
||||
|
||||
|
Yes you can.
Robert Williams
__________________
"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
|
#12
10-03-2002, 06:12 PM
|
|||
|
|||
|
Re; 67 Exhaust manifolds... The manifolds will work with the motor, but have you considered a nice set of free flowing headers to let the motor breath? [img]/infopop/emoticons/icon_cool.gif[/img]
|
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
