Noisy solid lifters
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,021
Likes: 84
From: Florida
Noisy solid lifters
Hi Guys, Have a 63 -327 / 340 hp adjusted the solid lifters the other day because they started to sound overly noisy.After adjustment not much improvement .Anyone have any sugestions.They were adjusted to 30 thousants.Bob W
Race Director
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
30 thousands is a pretty wide (and correct) gap, and the valves will be somewhat loud.
the only other thing to check for is worn tips on your rocker arms/valve stems/pushrods; and to do this you'll have to take each rocker arm off and inspect the pushrod and valve stem contact points.
Bill
the only other thing to check for is worn tips on your rocker arms/valve stems/pushrods; and to do this you'll have to take each rocker arm off and inspect the pushrod and valve stem contact points.
Bill
Last edited by wmf62; Sep 3, 2007 at 08:27 AM.
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,021
Likes: 84
From: Florida
Bill, Thank you i will do that today.Leaving for Florida tomorrow for our vacation.The best place to have a good time.Start out in Orlando and work our way down to Key West Bob W
Race Director
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
Race Director
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
Mike
yep, if he has the original cam, you're right; i just 'assumed' he had the correct gap #.
The original "097" Duntov was used from late 1956 to 1963 and designed for 0.012-0.018-inch clearance with 1.5:1 rocker arms. But in 1963 the intake clearance was revised to 0.008-inch and this change was also recommended in Corvette News in the late 1950's for "weekend competition events";
"30-30" solid-lifter cam (PN 3849346) used in 1967-69 Camaro 302/290hp Z/28 engines, as well as in 1964-65 Corvette L-76 327/365hp and L-84 327/375hp (F.I.) engines
Bill
Last edited by wmf62; Sep 3, 2007 at 09:34 AM.
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Burning Brakes
Joined: Mar 2001
Posts: 1,203
Likes: 147
From: dalton ma
Just installed that cam , sourced from Speed-Pro, and they list clearances of .012 and .018. The noise comment reminds me of a time when I didn't do my own work. Had a "good" mechanic do my valves and he had two blades of the feeler stuck together! Yep, louder than 'ell. Bob
