Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - do bigger cams have harder cold starts ?
View Single Post
  #6 (permalink)  
Old 08-30-2012, 10:15 AM
F-BIRD'88's Avatar
F-BIRD'88 F-BIRD'88 is offline
Yada Yada Yada
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,284
Wiki Edits: 0

Thanks: 5
Thanked 399 Times in 393 Posts
The key is correct ignition timing curve for the cam.
And not allowing the motor to idle at a low rpm while first cold.
Get it started and get the rpm to 2000+ rpm and hold it till some heat gets into
the manifold. if you think you can idle it low like a EFI motor when cold
you are going to go thru a lot of spark plugs.
Give it plenty of idle rpm when cold. Give it time to "warm up"

Correct the timing curve with plenty of initial base timing.

20-24deg base ,,34-36 at max mech advance
10-15deg of vacuum advance for part throttle cruise
the stock out of the box timing curve is never right.

Cammed up motors want a lot more initial base idle timing than stock.
Get a 750 eddy or 750 holley.
Reply With Quote