Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #1  
Old 10-19-2023, 11:29 PM
169indy's Avatar
169indy 169indy is offline
Yenko Contributing Member
 
Join Date: Oct 2001
Location: Washington
Posts: 799
Thanks: 1,152
Thanked 743 Times in 247 Posts
Default

My Solid lifter motor builder performed Cam break in with reduced valve springs as a measure to assure free spining lifters during the critical break in period on the dyno. The n installed the inner springs to perform power pulls.
__________________
69 Los Z11
68 SS/RS 396/325
68 Los Z28
Reply With Quote
The Following 2 Users Say Thank You to 169indy For This Useful Post:
napa68 (10-20-2023), Ryan1969Chevelle (10-20-2023)
  #2  
Old 10-20-2023, 12:03 AM
Too Many Projects's Avatar
Too Many Projects Too Many Projects is offline
Yenko Contributing Member
 
Join Date: Oct 2020
Location: Town of Troy, WI
Posts: 5,181
Thanks: 2,748
Thanked 4,035 Times in 1,821 Posts
Default

Quote:
Originally Posted by 169indy View Post
My Solid lifter motor builder performed Cam break in with reduced valve springs as a measure to assure free spining lifters during the critical break in period on the dyno. The n installed the inner springs to perform power pulls.
That IS the recommended procedure by some cam manufacturers too. The guy I've had build a few engines does that too. He has a very low cam failure rate and usually it happens after the first oil change when the owner fails to head his instructions on what oil to use.
__________________
Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
Reply With Quote
  #3  
Old 10-20-2023, 12:06 AM
Ryan1969Chevelle's Avatar
Ryan1969Chevelle Ryan1969Chevelle is offline
Yenko Contributing Member
 
Join Date: Nov 2012
Location: Beautiful Elora Ontario Canada
Posts: 5,981
Thanks: 606
Thanked 927 Times in 473 Posts
Default

Quote:
Originally Posted by 169indy View Post
My Solid lifter motor builder performed Cam break in with reduced valve springs as a measure to assure free spining lifters during the critical break in period on the dyno. The n installed the inner springs to perform power pulls.
I did the same thing on the dyno :-)

Worked out

Ryan W31
__________________


1969 Beaumont 350 Auto White Sold
1969 Beaumont 307 Auto Green Sold
1969 Chevelle SS 396-L35 Auto Blue Sold
1969 Oldsmobile Cutlass 'S' Sports Coupe W31
Reply With Quote
Reply


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

Forum Jump


All times are GMT. The time now is 08:59 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.