How much preload?
Buy one for $20. Not worth guessing when it comes to your valvetrain.
Just saw your other post on not starting.
Definitely make sure what length pushrod you need. What do you have in there now for a pushrod?
If when you measure you find out you need a 7.325, PM me as I have a set here.
I was in the same boat a year ago, had too long a pushrod and car wouldn't turn over. Measured and bought the correct pushrod, all is well.
Just saw your other post on not starting.
Definitely make sure what length pushrod you need. What do you have in there now for a pushrod?
If when you measure you find out you need a 7.325, PM me as I have a set here.
I was in the same boat a year ago, had too long a pushrod and car wouldn't turn over. Measured and bought the correct pushrod, all is well.
You have stock heads, head gaskets and Crane rockers? Which rockers, 1.7 or 1.8? Why is 1-1/4 too much, that is right about where I would set them to get 0.080" of preload. Are you sure you got zero lash correct, that is where most people make the mistake with these rockers.
When you lifted the rocker, (this is going to sound queer 
) were you gentle? It is very easy to rotate the nut and actually preload the lifter with your fingers. I had this problem really bad when I did my Morel lifters, because the plungers would just go down and you couldn't even feel them. It took me a long time to get it setup right.
) were you gentle? It is very easy to rotate the nut and actually preload the lifter with your fingers. I had this problem really bad when I did my Morel lifters, because the plungers would just go down and you couldn't even feel them. It took me a long time to get it setup right. Trending Topics
Thread Starter
TECH Veteran
iTrader: (12)
Joined: Dec 2004
Posts: 4,354
Likes: 0
From: Rockville, MD
Originally Posted by Viper
Buy one for $20. Not worth guessing when it comes to your valvetrain.
Just saw your other post on not starting.
Definitely make sure what length pushrod you need. What do you have in there now for a pushrod?
If when you measure you find out you need a 7.325, PM me as I have a set here.
I was in the same boat a year ago, had too long a pushrod and car wouldn't turn over. Measured and bought the correct pushrod, all is well.
Just saw your other post on not starting.
Definitely make sure what length pushrod you need. What do you have in there now for a pushrod?
If when you measure you find out you need a 7.325, PM me as I have a set here.
I was in the same boat a year ago, had too long a pushrod and car wouldn't turn over. Measured and bought the correct pushrod, all is well.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
TECH Veteran
iTrader: (12)
Joined: Dec 2004
Posts: 4,354
Likes: 0
From: Rockville, MD
Originally Posted by vettenuts
When you lifted the rocker, (this is going to sound queer ) were you gentle? It is very easy to rotate the nut and actually preload the lifter with your fingers. I had this problem really bad when I did my Morel lifters, because the plungers would just go down and you couldn't even feel them. It took me a long time to get it setup right.
) were you gentle? It is very easy to rotate the nut and actually preload the lifter with your fingers. I had this problem really bad when I did my Morel lifters, because the plungers would just go down and you couldn't even feel them. It took me a long time to get it setup right....it was never this hard with sbc;s...
Pushrods are fine, I think you just have an adjustment issue likely your zero lash setting. You can also use the old SBC method, but it takes more time. Its the way I had to do my Morels though.
Were these new lifters or ones already run and pumped up before you took the car apart?
Were these new lifters or ones already run and pumped up before you took the car apart?
Thread Starter
TECH Veteran
iTrader: (12)
Joined: Dec 2004
Posts: 4,354
Likes: 0
From: Rockville, MD
Originally Posted by vettenuts
Pushrods are fine, I think you just have an adjustment issue likely your zero lash setting. You can also use the old SBC method, but it takes more time. Its the way I had to do my Morels though.
Were these new lifters or ones already run and pumped up before you took the car apart?
Were these new lifters or ones already run and pumped up before you took the car apart?
They should be fairly solid to the feel then, unlike new ones. Make sure you let them bleed down between 1/4 turns. Don't worry, once they are set up they are really nice rockers.
Thread Starter
TECH Veteran
iTrader: (12)
Joined: Dec 2004
Posts: 4,354
Likes: 0
From: Rockville, MD
Originally Posted by vettenuts
Congrats 
What did you do?
What did you do?
oil pressure is about 25-30psi at idle all is well.
What's the cam, mine is pretty small and I was getting misfire errors as well. Need to shut off the idle and low speed misfire detection.
As for the adjustment, kind of hard to explain, but once you figure it out it is easy. Any problems loosening the adjusting nuts? How did you get them loose? My studs backed out when I tried to loosen mine, but I needed them out anyways so it wasn't and issue.
As for the adjustment, kind of hard to explain, but once you figure it out it is easy. Any problems loosening the adjusting nuts? How did you get them loose? My studs backed out when I tried to loosen mine, but I needed them out anyways so it wasn't and issue.
Stock rocker bolts are .049 per turn, multiply that by the 1.588 reverse rocker ratio, and every full turn creates .079 preload at the lifter. That would give you right around .100 preload, which is good for a stock type lifter.