The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Racing and high performance (trucks haulin more than hay)

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-12-2021, 12:26 AM   #1
KMAT
Registered User
 
Join Date: Oct 2018
Location: Sioux center, IA
Posts: 81
Harmonic balancer

I've tried to search the internet to find out about what horsepower rating a person should change their Factory harmonic balancer to an after-market one and as usual I have an issue with the internet give me no answers so I come here for a straightforward answer any help would be much appreciated
KMAT is offline   Reply With Quote
Old 01-12-2021, 09:24 AM   #2
biketopia
Senior Member
 
Join Date: Jul 2015
Location: NOVA
Posts: 522
Re: Harmonic balancer

More info, what type of engine, how old is the balancer currently, what are your power and use goals?
__________________
71 c-10 Long Bed, getting dropped on the ground with an LS, eventually...Scratch that, getting the 427SBC out of the Camaro

08 Sierra 1500 DOD Delete with Texas Speed and Speed Engineering parts

95 Camaro 427SBC/TH350
biketopia is offline   Reply With Quote
Old 01-12-2021, 03:07 PM   #3
KMAT
Registered User
 
Join Date: Oct 2018
Location: Sioux center, IA
Posts: 81
Re: Harmonic balancer

Y well I was basically just asking a general question but for more information I've got a 3:55 World product heads pretty good size cam about 470 lift I know that I'm not making near enough horsepower to be concerned about my harmonic balancer but yet still curious how much horsepower can a stock GM 350 harmonic balancer take b4 spins off the rubber
KMAT is offline   Reply With Quote
Old 01-12-2021, 05:12 PM   #4
biketopia
Senior Member
 
Join Date: Jul 2015
Location: NOVA
Posts: 522
Re: Harmonic balancer

A 50 year old one, could separate any time. If it hasn't had oil leaking on it for the past 20 years I'd guess 350-400 for a stock one is a ok, as long as you're not spinning it to the moon regularly. My blue print 427SBC that dyno's 525+ came from BP with a $35 stock style damper...I run it down the strip so I went ahead and changed out to an ATI for the SFI rating incase tech at a track wants to bust balls.
__________________
71 c-10 Long Bed, getting dropped on the ground with an LS, eventually...Scratch that, getting the 427SBC out of the Camaro

08 Sierra 1500 DOD Delete with Texas Speed and Speed Engineering parts

95 Camaro 427SBC/TH350
biketopia is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:48 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com