97formulakid

Ok so the car in sig is going to be sprayed here within the next month. It had 4.10's in it but that rear end went bye bye a few weeks ago and now has the stock 3.42 rear end in it.

The car puts down over 400 RWHP and NA I rev it to 6500. With the 4.10's it was perfect NA and pulled HARD.

I am going to be spraying a 150 shot on it and also getting a 12 bolt.

I will most likely run a 26" tall tire and dont know what gear to get.

My options:

Run a 26" tall tire, spray it, and run 3.73's.

or

Run a 28" tall tire, spray it and run 4.10's.

Ideas?

onebadponcho

https://www.camaroz28.com/calcs/bestgear.html

97formulakid

I've done that gear calculator plenty of times. I guess more than anything I want the input of people running either setup.

Injuneer

Are you planning on running the 1/4-mile? What is the engine redline? How do you launch? Will the tires be bias-ply slicks (growth issues) or radials (no growth)? Can we assume you want to cross the traps in 4th gear?

I've run 26's with 3.73 with both an M6 and a TH400, and 28's with 4.10, but only with the TH400. It all comes down to matching the redline to the traps/MPH in the 1:1 gear, and using the resulting combo. You would probably be OK with a 26" tire with 403rwHP and a 150-shot.

97formulakid

Yes I am running the 1/4 mile. Redline is 6500 RPM. WILL be launching it at around 3500-4000 with the 12 bolt. For now I am just running Mickey Thompson ET Street Radials and will probably keep on running them for a while. Yes, I would like to cross in 4th gear.

So you said I should be OK with a 26" tall tire with 403 RWHP and a 150-shot on 4.10's???