Serious Timing question!
Thread Starter
Supreme Member
iTrader: (2)
Joined: May 2009
Posts: 3,371
Likes: 2
From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Serious Timing question!
Ok, here it is. I have a 91 350 tpi. My question is this: if i increase my fuel pressure up a couple of pounds, then will I be able to raise my timing even more now? My timing is set to it's max without detonation. About a degree before detonation starts.LOL. Someone please let me know. I just remember the car feeling stronger before when i had a little more fuel pressure.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The only way the two could possibly be related is if you were running seriously lean. If you were running seriously lean, a couple more PSI wouldn't be the fix.
Ignition advance is a function of flame travel, which is affected primarily by piston speed and combustion pressure. You want to start the fire early enough to get the burning going full blast as the piston is moving down (over simplification). It's not some magic fix-all to run more ignition advance. In fact, with better combustion chamber design comes reduced advance.
Ignition advance is a function of flame travel, which is affected primarily by piston speed and combustion pressure. You want to start the fire early enough to get the burning going full blast as the piston is moving down (over simplification). It's not some magic fix-all to run more ignition advance. In fact, with better combustion chamber design comes reduced advance.
Thread
Thread Starter
Forum
Replies
Last Post