Thread: Goodbye '97 Grand Prix, Hello 2008 G8 GT.

Originally Posted by SgtMarshal

have you considered installing LS3 heads on it?

Some GTs actually came with the LS3 heads (so ive been told from a reputable source) while the majority came with L92 heads from the 6.2L SUVs. Which are virtually LS3 heads, but I'd like to see the stamping on my heads to see which ones I have.

But to answer your question, no I won't be doing that.

You gotta change your name to Dan8GT hahahahaha.

I actually am that over on the G8 forum lol.

Originally Posted by DanPrixGTP

I actually am that over on the G8 forum lol.

Hahahahaha, called it lol.

The heads on the motor are already some of the best stock flowing heads ever made from GM. Changing to real cnc LS3 heads would be a waste of money.

821's are basically LS3 heads and the other number 823 are super similar, camaro's and corvette's ran them aswell. The 6.2 GXP's ran the same heads.

Originally Posted by Fivefingerdeathpunch

The heads on the motor are already some of the best stock flowing heads ever made from GM. Changing to real cnc LS3 heads would be a waste of money.

821's are basically LS3 heads and the other number 823 are super similar, camaro's and corvette's ran them aswell. The 6.2 GXP's ran the same heads.

I was told this exact thing. The L92 and LS3 heads are very similar and both heads perform very well.

Thanks for clarifying though.

Originally Posted by DanPrixGTP

Some GTs actually came with the LS3 heads (so ive been told from a reputable source) while the majority came with L92 heads from the 6.2L SUVs. Which are virtually LS3 heads, but I'd like to see the stamping on my heads to see which ones I have.

But to answer your question, no I won't be doing that.

You can see the stamping without taking the heads off dan, they're stamped in the corners. Look at your passenger side head near the front on the bottom corner. I'll find a pic for ya.

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Look at post #2

http://www.g8board.com/forums/showthread.php?t=2146

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I hated G8s when they came out, but I've really started taking a liking to them lately, especially clean ones like yours, Dan. Enjoy, car looks beautiful

Originally Posted by GrandPrix06GT

You can see the stamping without taking the heads off dan, they're stamped in the corners. Look at your passenger side head near the front on the bottom corner. I'll find a pic for ya.

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I'll have to take a look at my casting number. Hopefully I have the 821 or 823 heads.

Which ones do you have?

Originally Posted by DanPrixGTP

I'll have to take a look at my casting number. Hopefully I have the 821 or 823 heads.

Which ones do you have?

5964's

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It's going to be one of the three, not that it even matters. They all flow great and are some of the best out there.

Decided to give the car a hand wash, polish, and wax this evening. A few hours of my time and this car shines up amazing. I'm very happy with my purchase and probably couldn't have found a cleaner G8.







GXP Rear Diffuser (Still waiting on my custom plate )










With my tax returns, I will be buying a Solo Unbalanced Cat-Back, because this LS engine needs some noise. Then I'll be doing tint and front splitter after that.

Lower it.

Originally Posted by blueguy

Lower it.

Jesus. You turned into Bio.

Originally Posted by Iceman6669

Jesus. You turned into Bio.

I always was and have been lower than Bio

Buy adams H20 guard and gloss. You'll thank me tomorrow

Originally Posted by Carzy

sleek looks. great job on keeping your car neat

Appreciate it!

Originally Posted by blueguy

Lower it.

I will eventually. But I loud noises first and window tint.

This V8 is stupid quiet with the stock exhaust.

Originally Posted by JDrach

Buy adams H20 guard and gloss. You'll thank me tomorrow

I'll look into it, but I'll thank you today.

Thanks man.