The Stovebolt.com Forums

Home | Tech Tips | Gallery | FAQ | Events | Features | Search

Register Log In

The Stovebolt Site Forums The Shop Area Engine Shop Engine Knock Cause

Help is a click away!

VEHICLE
INFORMATION
KITS

at the

GM Heritage Center
All the details are here.

Searching the Site - a click away

click here to search

New here ??? Where to start?

Click on image for the lowdown.

Where do I go around here?

====

Who's Online Now

2 members (tesa, Ponchogl), 50 guests, and 0 robots.

Key: Admin, Global Mod, Mod

Forum Statistics

Forums66

Topics128,076

Posts1,055,925

Members48,430

Most Online14,466
Apr 26th, 2026

Step-by-step instructions for pictures in the forums

Brad Allen's photos

AD Chevy Trucks

Pictures galore

Pictures galore

Over 6,000 pictures

Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips.

Check them out!

Lots of work on Brad's part ... pure enjoyment (and references) for you!

Big Thanks!

THANKS!

For helping keep this great
old truck web site
on the Internet for

over 30 years!

and not clogged down
with Ads!

Print Thread

Engine Knock Cause #59580 04/24/2006 3:53 AM
Joined: Apr 2006 Posts: 3 Athens TN. C ClassicFastCars.com Junior Member
ClassicFastCars.com Junior Member C Joined: Apr 2006 Posts: 3 Athens TN.	I have a 1966 Catalina with a 389ci engine. The motor was completly rebuilt and has about 3500 miles since rebuild. When you have the car in park and rev the engine up to 3000rpm or so and then let off the gas, the engine knocks. Also has a mild knock at idle. No knock when engine speed is increased. Good oil pressure. I am guessing wrist pin. Any ideas? I would like to invite everyone to visit my new wbesite, www.ClassicFastCars.com. Lots of great Articles, Restoration Tips, Technical Information, Production Data, Photos, Forums, Links and adding more content daily.Feel free to leave any questions, comments, or suggestions you might have. www.ClassicFastCars.com

Re: Engine Knock Cause #59581 04/24/2006 10:12 PM
Joined: Jun 2004 Posts: 8,597 Overland Park, Ks. W Wrenchbender Ret. Riding in the Passing Lane
Wrenchbender Ret. Riding in the Passing Lane W Joined: Jun 2004 Posts: 8,597 Overland Park, Ks.	Check the harmonic balancer. Those old pont. were nortorious for the rubber comeing loose or the hub loose on the crankshaft. If not check the tork converter bolts. They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne Super In the Gallery Forum

Re: Engine Knock Cause #59582 04/25/2006 1:10 AM
Joined: Mar 2004 Posts: 3,068 Center Point 48bigtrucks 'Bolter
48bigtrucks 'Bolter Joined: Mar 2004 Posts: 3,068 Center Point	Excessive crankshaft endplay will make that noise when the engine is unloaded like that, Scott Scott Ward 2 1948 1.5-ton Loadmasters The red one and The snow pusher 1 1950 3100 1 1955.1 Chevy 6500 1 1954 Chevy 6500 2-Ton 1 1955 1st Series COE 5700 1 1963 K20 (454) 1 1964 C10 (350) 1 1951 1.5-ton Dump Truck 1953 and a 1956 Ford F800 Raising a teenager is like trying to nail Jello to a tree!

Re: Engine Knock Cause #59583 04/25/2006 8:49 PM
Joined: Apr 2005 Posts: 1,971 Minnehaha County, South Dakota B Builder 'Bolter
Builder 'Bolter B Joined: Apr 2005 Posts: 1,971 Minnehaha County, South Dakota	That's the chipmunks knocking on the valve covers. You forgot to feed them. 1960 Chevy Apache Shortbox In the Gallery Story continues in the DITY Gallery Read all about the IRWIPI - Triple Dog Dare! Supporting Stovebolt Servicemembers

Moderated by Phak1, Woogeroo

Hop To

Link Copied to Clipboard

Home | FAQ | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop

Powered by UBB.threads™ PHP Forum Software 8.0.0