|
09-27-2002, 07:45 PM
|
#1 |
|
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
|
Setting up my timing
I am playing with the timing on my truck using an adjustable vaccum advance, mechanical advance kit, timing tape, and a timing light. The motor is a 350 with 8.5:1 compression, HEI, and i run 89 octane in it. My cruise RPM at 65-70 is 2500-2800 RPM. How much total advance with the vaccum and mechanical advance combined should i look for? What should i end the mechanical advance at? The vaccum advance is a Crane part, and the mechanical weights are a Summit part. Thanks for the help!
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
|
|
|
09-27-2002, 08:09 PM
|
#2 |
|
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
|
I would suggest 34 degress total timing in at 2750rpm or so.. 10deg initial 12 degrees of vacuum on full manifold vacuum, not ported and 22-24 degrees of mechanical if you use ported vacuum you will be at 45 or so at 2750 rpm...not good.. this is a basic guide line... with your motor being basically stock, you might start out at 8 degrees initial
__________________
It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
