Gain extra benefits by becoming a Supporting Member Click here find out how!
Gold ***Platinum***
Sting Ray (10)crusier (2)don.franken58 Bel Air Mark (2)Joe58nstlga (10)drew1987 (2)Fishbone (3)Johnny468  (7)fantm2flyer (2)motthollow (5)409Corvair 2dr150 (9)Carl1962 (3)joeray58 T57 (7)alltak (7)4spd409 (9)Mr LuckyNednz1for53Red402jim24 CABENELSONBackrodebobCarguy1965 (5)chevygenie (9)rbiman beagrizzly (7)MikeUSNRet 66conv (2)Nathan89 Evhfan2000 (4)tommy49 (2)
alans 55 (14)rockfangd (2)
57 handyman (4)
pale warrior
1960_Guy (4)
Jim McCall (6)
rooks (4)puzzley (12)
HYPR (14)
Classic Performance Products Classic Parts
Ciadella InteriorsAmerican Auto Wire Ecklers AutoMotive
Exile® Battery Keeper™ 6/12 volt charger w/ LED battery monitorClassic Industries
Hellwig Products IncPerformance Rod & Custom
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy
 

Join the Community today







Username Post: SBC timing gear and chain install        (Topic#276023)
dc_motruck 
Forum Newbie
Posts: 53

Loc: Rural Missouri
Reg: 02-01-10
02-06-12 11:52 AM - Post#2187815    

I need some expert info to settle a debate. When installing a new timing gear & chain on a small block chevy (a 1988 5.7 TBI) where are the dots on the gears supposed to be when #1 cylinder is at TDC on compression stroke?

What would be out of whack if #1 was TDC on compression and the dots were lined up with each other (crank gear dot at 12 oclock and cam gear dot at 6 oclock) ?

 
aghaga 
"4th Year" Silver Supporting Member
Posts: 1869

Age: 60
Loc: Altavista, Va.
Reg: 07-05-08
02-06-12 12:21 PM - Post#2187819    
    In response to dc_motruck

#1 on comression will be with both the crank dot and the cam dot @ 12 o-clock. With the crank dot @ 6 o-clock cyls. 4&7 will be on TDC.

 
62chevy427 
"9th Year" Silver Supporting Member
Posts: 1865
62chevy427
Loc: laurens sc
Reg: 04-13-06
02-06-12 12:24 PM - Post#2187820    
    In response to dc_motruck

the dots should be - crankshaft at 12 oclock and camshaft at 6 oclock. when installing distributor with this set up,the rotor should be ready to fire on #6. never did like that. it has caused me lots of confusion until i figured it out. now,after installing a timing chain and gears,after turning the engine at least 2 turns to verify a correct installation,i leave it with the crank and the cam at 12 oclock. that way i can install the distributor to fire #1 cylinder. i install it so that the rotor is just past the #1 post on the distributor cap.squirt some gas into the carb and it will crank up right away. then set timing etc.
56 bel air ((since 2002)
62 impala ss (since 1965)
65 el camino (since 1969)
66 nova (since 1987)
67 malibu convertible (since 1981)
72 el camino ss454 (since 1985)
83 gmc 4wd (since 1991)
95 impala (new)
14 camaro (new)


 
grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 16307
grumpyvette
Age: 67
Loc: FLORIDA USA
Reg: 03-16-01
02-06-12 01:00 PM - Post#2187832    
    In response to 62chevy427



http://forum.grumpysperformance.com/viewtopic.php?...

http://forum.grumpysperformance.com/viewtopic.php?...
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 02-06-12 01:02 PM. Reason for edit: No reason given.

 
dc_motruck 
Forum Newbie
Posts: 53

Loc: Rural Missouri
Reg: 02-01-10
02-06-12 02:37 PM - Post#2187866    
    In response to grumpyvette

Thanks. That's where the confusion was... what cylinder was at compression when the dots were facing each other (12 & 6 oclock).

 
MikeB 
Senior Member
Posts: 9599
MikeB
Loc: Plano, TX
Reg: 08-28-03
02-08-12 12:01 PM - Post#2188535    
    In response to dc_motruck

#6 is at TDC compression when dots are next to each other.

1982 C-10 SWB pickup -- Unmolested, original paint, 250 six, 3-on-the-tree
(Soon to be 350 w/Vortec heads & TH350)

Sold my 55 sedan in June 2014, having owned it 11 years.


Edited by MikeB on 02-08-12 12:03 PM. Reason for edit: No reason given.

 
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

6202 Views
Recent Hot Topics
Current Quote
"I am amazed by how knowledgeable and helpful folks on this forum are, and I am grateful for any help you may send my way."
~ Supporting Member
Recent Topics
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.166 seconds.   Total Queries: 15   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 05:24 AM
Top