How can I make WOT pull harder?
Thread Starter
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
How can I make WOT pull harder?
Part throttle driving feels torquey and right, but honestly I could use a little more pull when it downshifts for WOT. Avg mpg is like 19 in city driving, so everything must be in tune.
I'm like this close to getting tunercat (sold my HPP+), mainly to play with tcc lockup but if I brought my WOT air/fuel ratio to something like 12.2:1 with tunercat (I've heard GM stock ratio for WOT is about 10.7:1) would that give me some more pull at WOT? Stock engine. '95 model. I understand you don't want to go leaner than about 12.7:1 @ WOT or you risk cooking valves, etc., but does that safety ceiling still hold true if you not running headers (stock manifolds...will the stock back pressure let you lean it out more)?
2.59's in the rear.
[Modified by Lone Ranger, 9:35 PM 7/22/2003]
I'm like this close to getting tunercat (sold my HPP+), mainly to play with tcc lockup but if I brought my WOT air/fuel ratio to something like 12.2:1 with tunercat (I've heard GM stock ratio for WOT is about 10.7:1) would that give me some more pull at WOT? Stock engine. '95 model. I understand you don't want to go leaner than about 12.7:1 @ WOT or you risk cooking valves, etc., but does that safety ceiling still hold true if you not running headers (stock manifolds...will the stock back pressure let you lean it out more)?
2.59's in the rear.
[Modified by Lone Ranger, 9:35 PM 7/22/2003]
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: How can I make WOT pull harder? (Lone Ranger)
Try underdrive pulleys to spin up quicker and cut-back spark plugs for a few more HP.
A little higher stall TC will give you more torque on down shift into 1st gear and a shift kit will put more snap into the resultant up shift.
Also 1.6:1 RRs will put a little more HP under the clam as will some exhaust work.
When my L98 was on the dyno the operator said the 12.6:1 WOT A/F ratio was about perfect.
Try the spare & jack delete and run with 1/3-1/2 tank of fuel for a very noticeable weight reduction.
If you drop the hammer at say 25-30mph the nose should come up and maybe a little chirp.
A little higher stall TC will give you more torque on down shift into 1st gear and a shift kit will put more snap into the resultant up shift.
Also 1.6:1 RRs will put a little more HP under the clam as will some exhaust work.
When my L98 was on the dyno the operator said the 12.6:1 WOT A/F ratio was about perfect.
Try the spare & jack delete and run with 1/3-1/2 tank of fuel for a very noticeable weight reduction.
If you drop the hammer at say 25-30mph the nose should come up and maybe a little chirp.
