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 > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-07-2007, 11:28 PM   #1
mtb_will_03
Registered User
 
mtb_will_03's Avatar
 
Join Date: Aug 2006
Location: Langley, BC Canada
Posts: 114
another timing Q

383 stroker, with my timing set at 36 degrees when it hits about 4500rpm the engines feels a bit shaky, but when i bump the timing up a tad more to like 38ish the shaking is gone.
mtb_will_03 is offline   Reply With Quote
Old 02-08-2007, 12:21 AM   #2
jhow66
Registered User
 
jhow66's Avatar
 
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
Re: another timing Q

Describe shaky. 36* at what rpm?
__________________
56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
jhow66 is offline   Reply With Quote
Old 02-08-2007, 01:00 AM   #3
FLEET72
Registered User
 
FLEET72's Avatar
 
Join Date: Jan 2007
Location: Sonoma, CA
Posts: 521
Re: another timing Q

Quote:
Originally Posted by jhow66 View Post
Describe shaky. 36* at what rpm?


Quote:
Originally Posted by mtb_will_03
383 stroker, with my timing set at 36 degrees when it hits about 4500rpm the engines feels a bit shaky, but when i bump the timing up a tad more to like 38ish the shaking is gone.
__________________
Oscar
'72 Shortbed Fleetside
'95 Jimmy 4X4
'69 GMC Custom Camper
FLEET72 is offline   Reply With Quote
Old 02-08-2007, 01:09 AM   #4
RACINJASON22
GEARHEAD
 
RACINJASON22's Avatar
 
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
Re: another timing Q

pretty sure he means what rpm was the engine at to set at 36*

and I know a few people that are kinda shaky, but none of my engines ever acted like them!
__________________
72 SWB 2WD MY PROJECT
72 LWB 4X4 FUTURE PROJECT

SUBSCRIBE HEREBOARD VENDORS HERE

NORWOOD MEET SURVIVOR!

Last edited by RACINJASON22; 02-08-2007 at 01:10 AM. Reason: adding thought
RACINJASON22 is offline   Reply With Quote
Old 02-08-2007, 01:18 AM   #5
mtb_will_03
Registered User
 
mtb_will_03's Avatar
 
Join Date: Aug 2006
Location: Langley, BC Canada
Posts: 114
Re: another timing Q

Quote:
Originally Posted by jhow66 View Post
Describe shaky. 36* at what rpm?
i set the timing at 2000rpm
mtb_will_03 is offline   Reply With Quote
Old 02-08-2007, 01:24 AM   #6
FLEET72
Registered User
 
FLEET72's Avatar
 
Join Date: Jan 2007
Location: Sonoma, CA
Posts: 521
Re: another timing Q

Quote:
Originally Posted by RACINJASON22 View Post
pretty sure he means what rpm was the engine at to set at 36*
I thought that just as I hit the submit button, so I let it roll just in case.
__________________
Oscar
'72 Shortbed Fleetside
'95 Jimmy 4X4
'69 GMC Custom Camper
FLEET72 is offline   Reply With Quote
Old 02-08-2007, 12:21 PM   #7
gyjackson
Registered User
 
Join Date: Jan 2007
Location: arkansas
Posts: 29
Re: another timing Q

Don't be scared....I had a 350 that ran great at 41* total...Just make sure you don't have detonation or your pistons will have nice windows in them soon! If you hear it knock under acceleration you know you have too much timing, but sometimes you can't hear it, so pull the plugs after you flogg it and check closely for little specs of aluminum stuck to the electrodes. if you find 'em back it off.
__________________
'72 Custom/10 SWB project... converting to 4WD
'67 Camaro rs convertible...waiting in line
'99 Ext. Cab Z-71 190000 miles on orig. trans fluid
'02 Black Z-71 burb..(wife's)
'92 Accord (daughter's)....Who want's my insurance bill?
gyjackson is offline   Reply With Quote
Old 02-08-2007, 12:33 PM   #8
bryanw1968
Senior Member
 
bryanw1968's Avatar
 
Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
Re: another timing Q

Tell us more about your distributor set up?

1. What kind of distributor?

2. Does it have vacuum advance or is it mechanical only?

3. What size weights are in the distributor?

4. What color springs are in it?(how quick do they open)

5. What is your initial timing?
bryanw1968 is offline   Reply With Quote
Old 02-08-2007, 01:41 PM   #9
mtb_will_03
Registered User
 
mtb_will_03's Avatar
 
Join Date: Aug 2006
Location: Langley, BC Canada
Posts: 114
Re: another timing Q

Quote:
Originally Posted by gyjackson View Post
Don't be scared....I had a 350 that ran great at 41* total...Just make sure you don't have detonation or your pistons will have nice windows in them soon! If you hear it knock under acceleration you know you have too much timing, but sometimes you can't hear it, so pull the plugs after you flogg it and check closely for little specs of aluminum stuck to the electrodes. if you find 'em back it off.
So after I flogg it I should pull over right away and chek?
mtb_will_03 is offline   Reply With Quote
Old 02-08-2007, 05:25 PM   #10
gyjackson
Registered User
 
Join Date: Jan 2007
Location: arkansas
Posts: 29
Re: another timing Q

yup....if not you risk burning off the evidence
__________________
'72 Custom/10 SWB project... converting to 4WD
'67 Camaro rs convertible...waiting in line
'99 Ext. Cab Z-71 190000 miles on orig. trans fluid
'02 Black Z-71 burb..(wife's)
'92 Accord (daughter's)....Who want's my insurance bill?
gyjackson is offline   Reply With Quote
Reply

Bookmarks


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 06:53 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com