C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

valvetrain question

Thread Tools
 
Search this Thread
 
Old Sep 20, 2024 | 01:17 AM
  #1  
Peacelsc5's Avatar
Peacelsc5
Thread Starter
Heel & Toe
 
Joined: Dec 2022
Posts: 16
Likes: 2
Default valvetrain question

hello all i recently swapped my cam in my '01 ls1 and i cant seem to find the answer to a question that i have. i havent started the car yet out of nervousness. my question is that when i was reinstalling the new pushrods all of them "dropped" down after pushing it down with my finger except for one on cylinder #3. the heads were NOT swapped and a 5/16 dowel was inserted all the way into the engine. the engine is at TDC and has been. i did rotate the motor by hand once but the rods werent in i believe i dont know if that has anything to do with it. the rocker arm screwed all the way in and was torqued to spec but instead of it seating normally the spring compressed. this may all just be nothing to worry about but i wanted to get some more experienced insight as i would not like to mess anything up again. again, thank you all in advance
Reply
Old Sep 20, 2024 | 08:09 AM
  #2  
Bobbo76's Avatar
Bobbo76
Pro
Veteran: Canadian Forces
Liked
Loved
Community Favorite
 
Joined: Sep 2018
Posts: 654
Likes: 300
From: Nova Scotia Canada
Default

I don't have the best answer for you but perhaps once the rocker assemblies are assembled (with the plugs out) bar the engine over to see how things feel. Keep in mind non of the lifters are pumped up as they've never seen oil pressure.
Reply
Old Sep 20, 2024 | 09:55 AM
  #3  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,246
Likes: 1,092
From: Dyer, IN
Default

Originally Posted by Peacelsc5
hello all i recently swapped my cam in my '01 ls1 and i cant seem to find the answer to a question that i have. i havent started the car yet out of nervousness. my question is that when i was reinstalling the new pushrods all of them "dropped" down after pushing it down with my finger except for one on cylinder #3. the heads were NOT swapped and a 5/16 dowel was inserted all the way into the engine. the engine is at TDC and has been. i did rotate the motor by hand once but the rods werent in i believe i dont know if that has anything to do with it. the rocker arm screwed all the way in and was torqued to spec but instead of it seating normally the spring compressed. this may all just be nothing to worry about but i wanted to get some more experienced insight as i would not like to mess anything up again. again, thank you all in advance
You should see the pushrods move up and down as you rotate the engine. If you are torquing down a rocker and compressing the spring, you are torquing down on an open valve. This is a great formula for damaging the threads in the head, and just bad practice.
Reply

Get notified of new replies

To valvetrain question





All times are GMT -4. The time now is 02:54 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE