Powering up my LQ9

[Joyridin]

My L83 puts out about 480 hp at the crank. With 3.73 gears, 28" tall tire (13" wide) and a 3400 stall, it will fry the tires until you let off the pedal.

I agree with Accelo, knowing the cam specs and tuning the engine are 2 different things. Something isn't set-up right if you cannot smoke the tires in a 2wd truck.

[SilverGT3RS]

Originally Posted by Joyridin

My L83 puts out about 480 hp at the crank. With 3.73 gears, 28" tall tire (13" wide) and a 3400 stall, it will fry the tires until you let off the pedal.

I agree with Accelo, knowing the cam specs and tuning the engine are 2 different things. Something isn't set-up right if you cannot smoke the tires in a 2wd truck.

The truck runs decently for the most part outside of running a bit rich and a stumble when coming to a stop….unfortunately I live about 4 hours from the nearest dyno tuner, so I’ve been relying on tuners to help me over the internet. I should have clarified that. I used “smoke the tires” kind of tongue in cheek…the truck will roast them now, but that’s easy in a 2wd truck as many pointed out.

For me, the fact I don’t know the cam size and stall size is irritating. When I couple that with a few other issues I’ve corrected on the truck I have a bit of skepticism that everything was well planned out. In other words, I believe the original modifying owner may have thrown some stuff together with the hope it would make a lot of hp.

The plan is to get it to the dyno at some point, but for now I’ve been tweaking it by tune files.

I’ll be talking to BTR and Texas Speed today and will update the thread with their recommendations just in case anyone is interested.

[SilverGT3RS]

Just an update for anyone interested.

Spent quite a bit of time with Texas Speed and Comp Cams today.

Texas Speed recommended the following:
Bald Eagle Cath Head cam 227/234 .600/.600 111LSA
PRC 227 Heads with a small bump in compression.
42-60 pound Injectors

TS said this set up alone was dynoed on a similar LQ9 at 545-555 hp.
Swapping out truck intake to a FAST intake added approximately 18-22hp.

No issues with power brakes or AC etc


Comp Cams tech was basically recommending one of their cams- the 281LR-HTR13. 231/239 .617/.624 113LSA
Trick Flow 225’s
Upgraded injectors.
FAST intake

Said their testing on similarly equipped LS3 with Fast Intake netted around 570hp/530 TQ
Said the LS1 should be very close to that.

Also said there was some testing posted on YouTube with similar setup that had even higher numbers.

Good stuff.

Talking to BTR tomorrow.