B buick rob New Member Joined Aug 25, 2012 Sep 26, 2012 #1 I have the 979s new inthe box or should i go with the 980s ? Stock cam 30k on the originals . Thanks again Robert E.
I have the 979s new inthe box or should i go with the 980s ? Stock cam 30k on the originals . Thanks again Robert E.
B buick rob New Member Joined Aug 25, 2012 Sep 27, 2012 #3 Ok thanks , alot of vendors kept saying i needed the 980s instead to make any difference.
B bison Moderator Staff member TurboBuick.Com Supporter! Joined Dec 19, 2005 Sep 27, 2012 #4 buick rob said: Ok thanks , alot of vendors kept saying i needed the 980s instead to make any difference. Click to expand... 980's need a lot if shimming to get a decent pressure. I would use them on a stock cam only. Aftermarket cams need more sping.
buick rob said: Ok thanks , alot of vendors kept saying i needed the 980s instead to make any difference. Click to expand... 980's need a lot if shimming to get a decent pressure. I would use them on a stock cam only. Aftermarket cams need more sping.
F Fast4Ward Well-Known Member Joined Mar 27, 2005 Sep 28, 2012 #5 the 981 's and Sealed Power VS739r are one step above the 980's at 105 pressure install height of 1.7 i'll be changing them out once breakin is complete with the 980's.
the 981 's and Sealed Power VS739r are one step above the 980's at 105 pressure install height of 1.7 i'll be changing them out once breakin is complete with the 980's.
