02ws666

iTrader: (1)

Trying to wrap up some final items for my build, hoping you guys can suggest a proper rear gear for my setup. I was originally thinking 323s but I honestly am not sure with boosted applications. The 410s were killer with a cam only but obviously would be **** with twins.

MLRE 5.3
Twin Turbo Stage I Cam 222/231 .602"/.598" 112+4
Twin Precision 5858s .58 a/r ball bearing
6 Speed.
100% street car.

Will be getting a 12 bolt from Jason at TDP.

Thanks again for all the help, Nick

yenkomike

iTrader: (2)

3.31 or 3.55 with 12 bolt. 28" tire.

a05c

Gear it for whatever RPM you want to cross the trap at.

02ws666

iTrader: (1)

So this car will be a street car with no plans on bringing it to the strip other than a fun day at the 1/8 MAYBE. Is tire height as important to just roll around on the street?

Its a fun weekend project car.

jordoza777

iTrader: (2)

Tire size effects gear ratio by a lot. A car with 3.73 and 25 inch tall rears will feel like you lost major power off the line if you change to 28 inch tall tires. You need to know what tire size to make a decent guess what gear you will want.

a05c

Use an online calculator to figure out what the RPM range is for the tire height and gear ratio that you want to have.

02ws666

iTrader: (1)

OK, so to play the tire size game, I will likely just put an ET Street Rs on the stock rims for now. P275/40R17 26.1 Diameter tire.

I can always change the rear gear later when I put a new set of rims and tires on the car. But for now it will be on stock speedlines and 275 tires for at least the first set.