dominant1

I love my 3:31's gonna love em even more when my Paxton gets installed!

clowe1965

You planning on upgrading the rotating assembly, or when it goes get a new long block? That's a lot of abuse your engine has stood up to. Just curious.

awbreyjd

I plan on building the engine at some point. Trying to see if it will make the track season on stock internals. Its already got about 40 passes under it revving to 7800 every time.

clowe1965

Damn that's impressive. Good luck!

kornflake7

ya definitely 3.31 or 3.55 if you are going to supercharge

Paul S. Safford

I'm having 3.73s installed in my '13 GT with auto this weekend, should be interesting. It's on the lift now, they couldn't get the bearings off and had to order new ones, hope to pick her up and take her home by Monday. No plans for a drag strip but getting on the highway might be a little more fun then the stock 3.15s. The 3.15s suck, way to long legged and the auto transmission likes to hold onto second when downshifting, my guess with the 3.73s that won't be a problem for me anymore.

scottmach

The 3.15's work great provided you have a good tune.

Paul S. Safford

Haha, how much HP is listed in your BIO? I guess from your perspective 3.15s are just fine...

I just picked up the car this morning, I love the 3.73s! I am very happy with this mod, negligable MPG reduction with a noticable shift in the power band to a more DD friendly RPM range. Love it! Oh, and I did get the SCT tuner at the same time, it allowed for reprogramming the gear ration and adjusting the spedo - gotta read the manual to find out what else I can use it for.

scottmach

I don't have any HP listed for my 2011 but I've been 11.80's on 3.15's. Come back when you've beaten that with your 3.73's.