S1X and 1.7 roller rockers. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 11-04-2007, 06:04 PM   #1
Senior Member
Certified GM nut
Thread Starter
 
Join Date: Jul 2004
Location: New York City
Posts: 1,912
Thanks: 0
Thanked 0 Times in 0 Posts
OLDsman105 is on a distinguished road
Default S1X and 1.7 roller rockers.

Could I run 1.7 rockers with a intense S1X cam?

Would there be any benefit, seeing as I will be close to the limit of flow on stock heads with just the cam?



Thanks in advance.
OLDsman105 is offline   Reply With Quote
Old 11-04-2007, 06:12 PM   #2
Senior Member
Certified GM nut
 
Join Date: May 2005
Location: Wickliffe, Ohio
Posts: 2,155
Thanks: 0
Thanked 0 Times in 0 Posts
McGrath is on a distinguished road
Default

You would need aftermarket heads or have head work done to the stock heads to allow for that clearance. To my knowledge the S1X just about maxes out stock heads in regards to lift.

There are benefits to running higher ratio rockers with a cam (if you have the clearance.) You get the lift of a larger cam while still maintaining the driveability, the higher ratio rockers open the valve faster too.

Todd aka Rogue runs 1.8 rockers with his S1X cam on Intense Stage 3 heads.


Ed
McGrath is offline   Reply With Quote
Old 11-04-2007, 06:17 PM   #3
Senior Member
Posts like a Turbo
 
Join Date: Jan 2005
Location: Melbourne, FL
Posts: 289
Thanks: 0
Thanked 0 Times in 0 Posts
96SSEi_tampa is on a distinguished road
Default

Without port work I don't think you'll see any real gains over running the S1x on the stock ratio rockers, and ~.560 lift is a bit much for stock heads anyways. With a good tune the S1x alone will put a grin on your face all the way to your 6k+ rpm shifts.
96SSEi_tampa is offline   Reply With Quote
Old 11-04-2007, 06:22 PM   #4
Senior Member
Certified GM nut
Thread Starter
 
Join Date: Jul 2004
Location: New York City
Posts: 1,912
Thanks: 0
Thanked 0 Times in 0 Posts
OLDsman105 is on a distinguished road
Default

Damn I had a brain fart... I forgot about the lift.


I don't really want to modify the heads on my car .... I guess I will keep this in mind if I win those Intense stage 3 heads they are raffling.
OLDsman105 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Series 1 roller rockers vs Series 2 roller rockers xtremerevolution Performance, Brainstorming & Tuning 7 06-04-2010 07:52 PM
Questing regarding cam and roller rockers... VigCS Performance, Brainstorming & Tuning 14 03-04-2006 11:32 PM
FOR US 92 AND EARLIER SERIES 1 GUYS THAT WANT ROLLER ROCKERS Performance, Brainstorming & Tuning 11 06-09-2003 08:58 PM
ROLLER ROCKERS AND STAINLESS VALVES FOR SERIES 1 Performance, Brainstorming & Tuning 13 02-27-2003 10:53 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:09 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.