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  Topic: 428
rchrdwjohnson

Replies: 3
Views: 6924
 PostForum: Traditional Pontiac V8 Information   Posted: Sun Jan 31, 2021 1:25 am   Subject: 428
Thanks. On front pass side I found 152410 above the letters XG. Does that make it a 390hp? Another question. When I pulled the engine I unbolted it from the transmission thinking that would be easier. ...
  Topic: 428
rchrdwjohnson

Replies: 3
Views: 6924
 PostForum: Traditional Pontiac V8 Information   Posted: Wed Jan 27, 2021 7:16 pm   Subject: 428
Hi. I'm Richard and I have a 1969 Pontiac Grand Prix SJ powered by a 428. I am getting ready to overhaul the engine and was wondering how to tell if it is a h/o or not. Any help available on this? I h ...
 
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