Most stock 250s are 8.5-1 even the 194 had a 8.5-1 compression.It wasn't until 73 on up did the compression drop to 8.25/8.0-1 compression so depending on the year of your 250 yours could have been factory 8.5-1
Larry/Twisted6 [oooooo] Adding CFM adds boost God doesn't like ugly.
God doesn't like ugly.
