Friend of mine is looking at what is suppose to be a big block 427 for me.

I asked him for the engine pad stamping and he gave me this. I0425XA I asked him if he thought the I could be a T and he said it may have been. I have not been able to figure out the XA suffix.

If anyone could chime in on this stamping I would appreciate it.

I will try and get some pictures.....

Thanks

8 Ball

I didn't find an XA code either. All of the X? suffixes point to a 1968 396. There is a YA suffix that is a '60s 366.

The only XA code I was able to find is:

XA 1969 350 255 4 m/t

XA= suffix
1969 year
350 cid
255 hp
4 barrel carb
m/t= manual transmission

The "I" must be a "T". I don't see a engine plant code for "I"

If it's a big block, then it's a "T" for Tonawanda where all the big blocks were made.

Jonesy if its an XA then its an LM1 small block right? 350/255 with manual tranny?
Then its not a big block right?

He said it was a 427 block, so that's why I responded above. Is XA the 350/255hp code? The best way to determine is to get the casting numbers off the drivers side rear bellhousing flange and post them. graemlins/thumbsup.gif

I breezed thru 'Chevy by the numbers' and Camaros.ORG and there isnt an XA that I can find. If the X is an H, then it could be any number of big or small block configurations.
The only 350/255 camaro letters would be HQ, HR or HS.
All the big block numbers seem to be E or H or I or J or L or M in the 67 to 69 chevys cars. I cant find any reference to XA at all.
Definately need the number off the back of the block as Jonesy said.
Hoosier where did you get your info. on the XA ?

Is it a truck block??

It's possible that it's actually a "KA". The K's sometimes look like X's... If it IS a "KA", then it's a 69 396/350 horse block from a Camaro or Nova.

The only XA's I can find is the 69 Camaro 350 as posted by Hoosierdaddy above, and the 69 Truck, C-10, C-20 and C-30 series, but also a 350/255 Horse.

Ed

Id sure like to know where the reference is coming on XA being a 69 350 camaro engine. What books or websites are you reading this from guys?

Jim,

OOPS!! My bad. I didn't look at the book right. I should have said that the only "XA" I can find was for the 69 C-10, C-20 and C-30 Truck. 350/255...

Sorry about that!

Ed

I found the information on chevy-camaro.com. At the home page click on chevy engine codes, you can then pick from small or big block. I believe this is all of the codes for chevy motors spanning many years, so it would not matter if it is a truck block or a car block.

No XA blocks ever went in camaros. That list of blocks was for everything chev made. Im guessing its a truck application. The list under "Camaros only" has errors calling HQ a 350/300 when its an LM1 350/255 application.
I will stick to Colvins book. At least we now know where the XA comes from. Thanks smile.gif

8ballracing didn't ask whether it was a truck block or not, he wanted to know if it was a 427. According to chevy-camaro.com it is a 1969 350 it doesn't specify what it came in originally. The list nor I stated it was from a camaro. I don't believe that 8ballracing was under the impression he was trying to buy a camaro engine. I think it is safe to say that the engine his friend is looking at is not a 427.

Yep thats the way I see the info now too. Thanks.

Are sure its not XAA?

XAA is the suffix used bt GM Performance Parts on the crate LS6 engine.

Thanks everyone.

I just found out that my friends dad has cancer. I have not wanted to bother him about the motor right now. I will be seeing them both tommorow and will post any info that I may get at that meeting.

I know my friend is a Jeep guy if there is such a thing but he also likes GM and this is one of those I know a guy that has this bb chevy engine and he says it is a 427.

I am not concerned with the motor so much as seeing my friend and his dad. I have known his father for 25 years and my son and him share the same birthday. It is very sad as I understand that John (dad) was not expected to last thru Christmas. He is at home though and with his two sons.....The son (Bret) seemed as if something was bothering him as he was not his usual self when we talked.

John did not tell anyone but family about this and has been mia four the last four months. But sometimes you don't see someone for a while and never really think about it.

What a short time we have to share with our friends and family...........John is 52 years young.

Thanks to all for the help. If anything comes of this bb I will post what I find and thanks for hearing "my ramble" it helps getting these things off your chest. I can not even share this with my family right now as it is so close to the hoilday and would be just to hard for my little man to tell him right now.

John and my son have always had a special relation ship to one another they always seem to find something to talk about even though my son is only 8.....I will miss him when he is gone.......he is a dear freind.....


8 Ball

I wouldnt assume anything without the casting number off the block. I was thinking that the XA code was a truck code. Regardless, the best way to determine what kind of block it is is with the casting number. graemlins/waving.gif