Goldie Driver
Full Access Member
- Joined
- Mar 19, 2018
- Posts
- 4,042
- Reaction score
- 6,634
- Location
- Houston, Texas
- First Name
- Britt
- Truck Year
- 1980
- Truck Model
- GMC K1500 Suburban
- Engine Size
- 350
My 76 before I hopped the engine up I had it based at 11-12 and never gave me any issues. After the engine hop up I have it around 13-14 degrees with 9.0:1 compression and have always ran it on 87 octane. Total timing should be around 35. Have put my foot to the floor many times and have brought it up to its "redline" (5500) and have not shot the pistons out of the headers yet.
So you should be safe at 12 degrees. If you haven't yet already, I would check your mechanical advance and get a curve kit and play with the springs and see if it goes better with a different advance curve
Gonna play with it again tonight - I had one other thought. I did not disconnect the vacuum advance when I checked the timing, so what if the new switch is actually advancing it and I have the base timing too low ?
Typical man - read the service manual after I installed the TVS. 120 INCH pounds - I did not ooooof it, but I bet it is in there tighter than that. Easy to do w/o trying with a 1-1/4" wrench ...
May back it off a bit today, but the EFE works - verified this AM, so may not as the switch is working.
'KnowwhatImean,Vern ? "