My car was a bit tappy,
so got some new lifters and put them in today.
put it back together (nice and quiet ), but its mis firing when it gets to 3500 RPM on boost..

how sensetive are cossies to changes in cam timing?
the timing dont seem far out that i can see! the bottom pully marker
lines up with the flat on the engine..
the Distributor lines up, but i THINK the inlet cam might be reaching the
line on the head slightly before the exhaust cam, only a very slightly though..

just wondered if this would tie up? or does it sound like there could be another problem?
car seemed 100% fine the last time i used it bout 3 days ago

 

Should not make that big of a differance.
If you are using just regular pulleys then the only way the timing would change is if the belt was old and stretched or if the head was shaved.

Might be that the computer just has to relearn all of its specs. The CVH that came in the Sierras has to do this for so many miles (or hours) before it runs correctly.

I am currently playing with a completely shaved SOHC motor.


TF

 

thanks mate..
had another look this morning,,

Ok so I miiight of got the Distributor pully one tooth out! lol
(first time ive done cossie timing! lol)
goin ok now i've set it again.. thanks again mate!

 

good to hear!

TF