How much HP should I expect?

[BlackGP]

This week I am installing an XP Cam with 105 springs into my L26 as well as a GenV top swap with a 3.4 pulley and headers. What HP numbers should I expect to the wheels? I am getting an in-car tune from Overkill Motorsports too. I am guessing around 325hp to the crank after its tuned? Maybe run a 3.25 after I get 42.5 injectors? maybe 340hp to the crank?

Do you think its safe to run a 3.4 pulley on that setup without getting it tuned? I have a MPS to install as well, and a 3.5 or 3.6 pulley. I also have an aeroforce I can't figure out how to get it to work.

Also, I have a stock torque converter from an 06 Grand Prix, would I benefit anything putting that in?


I have a 04 CompG.

[01gpgt01]

300whp. You will need to tune it. 3.4 is pushing the injectors aswell on a l26 build.

[matt5112]

42.5 delphi or lucas injectors are terrible.

3.4 sounds right, maybe larger.

But only one way to tell.

260-280 WHP sounds fair to me.

Heads being touched at all?

If they're off, its worth the time.

[Explicit_Spade]

300whp

Now take it to a dyno and find out instead of playing "what if"

[Tuner-Extraordinaire]

280whp

[boostedcompg]

So...what happened to the L32 from the compg....

[Hippo Machine]

Wow, that'll feel like a whole different car when you're done

[boostedcompg]

I'm hoping on an xp setup you make more then me.......

[BlackGP]

I was thinking the 3.4 will be a bit much as well, it wont be for another month I'll get injectors, but I'll run the biggest pulley I have for my MPS until I can get a tune and keep my eye on the KR(this time around).


I chipped a piston. I ran SR Rockers, catless headers and a 3.4 pulley with an in-car tune from Overkill Motorsports without any knock on 91 octane. Lasted about 15,000km(8,000 miles?) and BAM, oil squirted out of the dip stick so I pulled the front head and sure enough my number 3 piston was chipped. prior to this, about 7,000km before I has misfire issues so I changed the plugs and wires, my number 3 spark plug was broke off, but I figured it blew out the exhaust somewhere and it ran awesome after I installed auto lite 104s.


So I've been without the car since mid october(my daily driver) and I learned one thing! Keep an eye on my aeroforce!

[matt5112]

and will likes rich.

11.0:1 afr.

so its kinda scary you managed that so quickly.

[boostedcompg]

Scary but possible. Glad you learned from it though. Again id expect your xp setup to make more then my rocker setup.

[SnowFlake]

Scary but possible. Glad you learned from it though. Again id expect your xp setup to make more then my rocker setup.

Got a scan of your dyno sheet? I'm interested to see that 290whp.

[BlackGP]

I forgot to mention I have about 190,000 miles on the car. I was driving the car about 1500 miles a week for the past 3 months before this happened lol.

[boostedcompg]

Sure do. Its posted with my dyno vid as well

[SnowFlake]

Where can I find this dyno sheet and video?

[boostedcompg]

search?......youtube?

[SnowFlake]

search?......youtube?

Couldn't you just post a nice link and picture?

[TeeWX]

You should expect disappointment.

[aligater]

bring the aeroforce by and I'll show you what you gotta do.

The 06 torque conv will be one step up from stock, very small step.

[BlackGP]

bring the aeroforce by and I'll show you what you gotta do.

The 06 torque conv will be one step up from stock, very small step.

Will do!