C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

solid lifters?

Thread Tools
 
Search this Thread
 
Old Oct 15, 2022 | 01:12 PM
  #1  
ukester's Avatar
ukester
Thread Starter
Drifting
Supporting Lifetime Gold
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Jul 2007
Posts: 1,629
Likes: 196
From: homosassa florida
Default solid lifters?

well after removing my valve covers it appears that i have solid lifters or someone put poly locks on on the rockers-it also looks like i have different heads on this #3917291-d77 is stamped.
with out any info on what settings this needs what do you recommend?


Reply

Popular Reply

Oct 15, 2022, 02:20 PM
jim lockwood's Avatar
jim lockwood
Race Director
15 Year Member
Active Streak: 60 Days
Community Influencer
 
Joined: Feb 2007
Posts: 15,408
Likes: 8,839
From: northern california
C2 of Year Finalist (track prepared) 2019
Default

Originally Posted by fparkin
if their solid lifters you be adjusting them a lot, they require allot of attention.
That doesn't match my experience with solid lifter small blocks which goes back more than 50+ years.

The last time I adjusted the solids on my FI '60 was 2013 and that was only because I had to R&R one cylinder head. Before that..... well, I don't remember but it was probably around 1984.

Bottom line, solid lifter engines are not high maintenance.
Old Oct 15, 2022 | 01:52 PM
  #2  
jim lockwood's Avatar
jim lockwood
Race Director
15 Year Member
Active Streak: 60 Days
Community Influencer
 
Joined: Feb 2007
Posts: 15,408
Likes: 8,839
From: northern california
C2 of Year Finalist (track prepared) 2019
Default

PolyLoks can be used with either solid or hydraulic lifters. So their presence doesn't signify anything in particular.
Reply
Old Oct 15, 2022 | 02:05 PM
  #3  
fparkin's Avatar
fparkin
Racer
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2018
Posts: 386
Likes: 75
From: Swartz Creek MI
Default

if their solid lifters you be adjusting them a lot, they require allot of attention.
Reply
Old Oct 15, 2022 | 02:20 PM
  #4  
jim lockwood's Avatar
jim lockwood
Race Director
15 Year Member
Active Streak: 60 Days
Community Influencer
 
Joined: Feb 2007
Posts: 15,408
Likes: 8,839
From: northern california
C2 of Year Finalist (track prepared) 2019
Default

Originally Posted by fparkin
if their solid lifters you be adjusting them a lot, they require allot of attention.
That doesn't match my experience with solid lifter small blocks which goes back more than 50+ years.

The last time I adjusted the solids on my FI '60 was 2013 and that was only because I had to R&R one cylinder head. Before that..... well, I don't remember but it was probably around 1984.

Bottom line, solid lifter engines are not high maintenance.
Old Oct 15, 2022 | 02:40 PM
  #5  
DAN70's Avatar
DAN70
Burning Brakes
Supporting Gold
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2008
Posts: 1,121
Likes: 300
From: PURCELLVILLE VA
C1 of Year Finalist (performance mods) 2019
2017 C1 of Year Finalist
Default

Originally Posted by jim lockwood
That doesn't match my experience with solid lifter small blocks which goes back more than 50+ years.

The last time I adjusted the solids on my FI '60 was 2013 and that was only because I had to R&R one cylinder head. Before that..... well, I don't remember but it was probably around 1984.

Bottom line, solid lifter engines are not high maintenance.
I agree.
Reply
Old Oct 15, 2022 | 03:04 PM
  #6  
morly1963's Avatar
morly1963
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2012
Posts: 3,070
Likes: 866
From: EHT NJ
Default

I had poly locks on my 283 Nova with hydraulic lifters.
Reply
Old Oct 15, 2022 | 03:29 PM
  #7  
Factoid's Avatar
Factoid
Race Director
Veteran: Navy
Community Influencer
Community Favorite
Top Answer: 5
 
Joined: Jul 2018
Posts: 10,539
Likes: 8,287
From: San Antonio, TX/Mahopac, NY
2024 Corvette of the Year Finalist - Modified
2024 Corvette of the Year Finalist - Unmodified
2023 C7 of the Year Winner - Modified
Default

Based on the intake and heads, highly doubtful it has solid lifters. Easy enough to test though and you can usually hear the difference.
Reply
Old Oct 15, 2022 | 03:57 PM
  #8  
leif.anderson93's Avatar
leif.anderson93
Le Mans Master
10 Year Member
Veteran: Air Force
Community Builder
Top Answer: 5
 
Joined: Feb 2014
Posts: 8,879
Likes: 5,412
From: Richardson Texas
Default

Installed them on my '67 L79 when I did a cam swap and valve job. After 500 mile run in, I switched to roller rockers and back to standard rocker arm nuts.


Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

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

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Oct 15, 2022 | 04:05 PM
  #9  
ukester's Avatar
ukester
Thread Starter
Drifting
Supporting Lifetime Gold
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Jul 2007
Posts: 1,629
Likes: 196
From: homosassa florida
Default

i think that is what i am going to do
Reply
Old Oct 15, 2022 | 04:15 PM
  #10  
vivasantana's Avatar
vivasantana
Burning Brakes
 
Joined: Jan 2021
Posts: 1,027
Likes: 189
From: Pittsburgh area
Default

My 2.8 V6 in the Capri had solids, always adjusting.
Finally had enough & yanked the entire drivetrain.
Did a V8 conversion with all the goods.\



Rock on Santana! Rock on!
Six decades strong!

93 Vette
74 Capri MK1



Reply
Old Oct 15, 2022 | 05:11 PM
  #11  
SDVette's Avatar
SDVette
Le Mans Master
25 Year Member
Liked
Community Favorite
Top Answer: 5
 
Joined: Jan 2000
Posts: 5,072
Likes: 1,556
From: Poway CA
2025 C1 of the Year - Unmodified Finalist
2024 C1 of the Year Finalist - Unmodified
2023 C1 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Unmodified
2019 C1 of Year Finalist (stock)
2019 C1 of Year Finalist (stock)
2016 C1 of Year Finalist
Default

I have solid lifters in my '61.. No locks on them.
I set the lash before my 6000 mile cross-country trip last year, plus a 1200 mile trip this summer.
Checking them after I got home, after 10000 miles, 2 or 3 had drifted slightly.. maybe .002. max.

​​​​​​​



Reply
Old Oct 15, 2022 | 05:33 PM
  #12  
MidShark's Avatar
MidShark
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2002
Posts: 2,390
Likes: 315
From: Belmont Michigan
Default

Originally Posted by Nowhere Man
Being 77 heads they have to be one of the worst heads GM ever casted. So really is your engine
77 heads? He has 291s that were cast on April 7, 1967. 64 cc chambers. Either 1.94 or 2.02 valves. Pretty decent heads, I would say.

Rich
Reply
Old Oct 15, 2022 | 05:36 PM
  #13  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 54,026
Likes: 9,381
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

Originally Posted by MidShark
77 heads? He has 291s that were cast on April 7, 1967. 64 cc chambers. Either 1.94 or 2.02 valves. Pretty decent heads, I would say.

Rich
well am wrong there and not sure what I was reading I'll delete it
Reply
Old Oct 15, 2022 | 09:49 PM
  #14  
TCracingCA's Avatar
TCracingCA
Team Owner
20 Year Member
Veteran: Navy
Liked
Community Favorite
 
Joined: Sep 2002
Posts: 38,303
Likes: 2,068
From: California
Default

Originally Posted by fparkin
if their solid lifters you be adjusting them a lot, they require allot of attention.
Myth

291 heads were GM parts replacements for just about any of the early 2.02/1.60 units.

You should pull the Manifold and see what you have, 695 top oiling type solid lifters or 585 top limited oiling type solid lifers. As you have roller tip type rockers, I would run the 695 or comparable type lifters as they aren't full rollers. The adjustments are more determined by the camshaft, so you will need to ID that.
Reply
Old Oct 16, 2022 | 09:35 AM
  #15  
66427-450's Avatar
66427-450
Safety Car
20 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Default

Originally Posted by ukester
…….
with out any info on what settings this needs what do you recommend?
Measure the current lash adjustments both intake and exhaust, Then maintain that lash setting….. (if you find a few that are looser than most, just adjust them to the “majority”). Who knows what’s in the engine? Could be a 097 cam, could be a 30-30, could be some aftermarket thing.
Reply
Old Oct 16, 2022 | 10:33 AM
  #16  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

Think the "adjusting them all the time" came from one of two things

-Not being adjusted properly in the first place
-Using the factory nuts over and over..you can ( Ihave) but they are supposedly 1 time use pieces
they can get loose over time. Probably why the guy put those polylocks on there bet that lash never budges.

Like adjusting solids with the engine stone cold, 1 cyl at a time. EOIC method..takes longer but its foolproof.
Love the way they run....kinda seamless like that OHC feel...and of course the sound.
Reply
Old Oct 16, 2022 | 10:41 AM
  #17  
Vega$Vette's Avatar
Vega$Vette
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
Default

If you have clearance between the rocker too and the valve stem you may have solids. If not you surely have hydraulics.
Reply
Old Oct 16, 2022 | 06:43 PM
  #18  
66ragtop owner's Avatar
66ragtop owner
Racer
20 Year Member
Active Streak: 30 Days
Photogenic
Liked
 
Joined: Feb 2003
Posts: 442
Likes: 45
From: Reading Pa
Default solid lifters

Originally Posted by fparkin
if their solid lifters you be adjusting them a lot, they require allot of attention.
I adjusted my LT1 cammed 327 after 10,000 miles and they were barely out. This is with stock rocker nuts
Reply

Get notified of new replies

To solid lifters?





All times are GMT -4. The time now is 09:43 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
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-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE