Sign up to remove ads. We'd love to have you amongst our ranks! Just Click here!

pontiac forums   pontiac forums

Go Back   Pontiac Forums > Pontiac Car Forums > Pontiac LeMans Forum


Pontiac LeMans Forum Discuss topics regarding the Pontiac LeMans.

Pontiac Forum: Timing Chain install
Thread Tools
Old February 23rd, 2018, 10:29 AM
spectrumad spectrumad is offline
Join Date: Jan 2013
Location: midwest
Posts: 32
spectrumad is on a distinguished road
Timing Chain install

Debate going on here. When installing a timing chain on a 1971 Pontiac 350, do you install "dot to dot" or "dots on top"? I have seen and heard arguments both ways and I suppose if other adjustments are made, either way will work.
Reply With Quote

Old February 23rd, 2018, 11:21 AM
melsg5's Avatar
melsg5 melsg5 is offline
Senior Member
Join Date: Dec 2008
Posts: 18,482
melsg5 is on a distinguished road
the 1971 factory service manual shows them dots on top which aligns everything at #1 TDC
1971 GTO 455 HO Ram Air
Reply With Quote
Old February 23rd, 2018, 03:07 PM
Kraig1957's Avatar
Kraig1957 Kraig1957 is offline
Join Date: Oct 2017
Location: Central California
Posts: 34
Kraig1957 is on a distinguished road
With #1 cylinder on TDC compression stroke Pontiac engine is dots on top, Chevrolet engine is dot to dot.

On a Pontiac engine dot to dot is when #6 cylinder is at TDC on compression stroke.
Attached Thumbnails
Click image for larger version

Name:	pontiac.png
Views:	28
Size:	11.5 KB
ID:	3535  

Last edited by Kraig1957; February 23rd, 2018 at 03:26 PM.
Reply With Quote
Old February 26th, 2018, 09:43 PM
tjs44 tjs44 is offline
Join Date: Feb 2018
Location: ca
Posts: 3
tjs44 is on a distinguished road
either way works.tom
Reply With Quote
Old April 17th, 2018, 07:56 AM
avell007's Avatar
avell007 avell007 is offline
Join Date: Mar 2015
Location: Wilmington, Ma
Age: 56
Posts: 74
avell007 is on a distinguished road
I second it doesn't matter if you crank the engine around the dots will line up dot to dot , a good method is always line up the dots on the old gears before removal .
1970 Catalina Convertible
1969 RS Camaro Forced Induction
1981 Corvette
Reply With Quote
Old September 4th, 2018, 09:14 AM
frankz frankz is offline
Junior Member
Join Date: May 2018
Location: NY
Posts: 5
frankz is on a distinguished road
The Pontiac Service Manual shows the Dots on Top.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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 07:23 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc. recognizes that "Pontiac", it's logos and various model names and numbers are registered trademarks of the General Motors Corporation. These terms are used for identification purposes only. is not affiliated in any way with the General Motors Corporation, Pontiac or any other company listed herein. All information on this site is the opinion of its members and not the opinion of the site itself. ©2017 All rights reserved.

Need products for your Pontiac? Check out your options at the links below:

Miss the Pontiac G8 GT? Believe it or not, Kia may have something for you. The Kia Stinger is a large sport-oriented hatchback sedan in the mold of the Audi A7.