cam ? - Page 3 - 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 09-09-2011, 09:01 AM   #21
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

According to the info both Intense and ZZP put out, the S1X and XP cams both max out the stock head clearance on stock 1.6 ratio rockers. Not sure where you are getting any of your info about adding rockers on top of a cam and stock heads Dan.

Research the stock head clearance and what you find is the math for the XP cam doesn't work on a stock head. It'* the addition of modded/LS style retainers and valve seals that give the XP enough clearance. The S1X is a touch smaller and does clear the stock seals with modded retainers.

Before going up to rockers on top of a cam or a cam that'* bigger than an S1X/XP you will need head work. When you have that done, you should automatically have the spring seats machined down so that you have a correct 1.800" of distance for your aftermarket springs as most of them expect a 1.800" installed height and you don't want to preload springs. Have the valve guides milled down for .600" or more of clearnace with valve seals installed and you'll be ready for most of the big boy cams.

The way to determine clearance for lift is to take the cam spec x rocker ratio.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
HELP! cam sensor error... and its NOT the cam sensor Sprig Everything Electrical & Electronic 3 06-17-2006 11:13 AM
cam sensor or VATS Pattie 1992-1999 21 01-26-2004 10:28 PM
Thrasher Cam Bob 86 2000-2005 5 05-30-2003 02:51 AM
where is the cam shaft position sensor Pattie 1992-1999 4 04-03-2003 09:07 PM
Error 41 (cam sensor circuit) on bonnie 93 se gnes 1992-1999 5 11-10-2002 09:01 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 02:53 AM.


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.