Hey what gear ratios are you guys running on the street? I'm getting all my info together for my 9 inch build. This car will be mostly street and some strip for ****s and giggles.
Also what type of differential would be good for mostly street but some track use?
With your tranny and cam, I would recommed 3.89s or maybe even 4.10s. I run 3.50 with no overdrive and love em. If I had overdrive I would run more....
i'm running a currie 9" trac-loc and 4.11's, cruising 70 is approx 2550 with an AOD If you don't have an overdrive i wouldn't recommend going over 3.80's.
I've run 2.79's, 3.25's, and 3.89's. By FAR, the 3.89 is my favorite (with a FMX auto). I don't know what I crusied at on the highway (nor did I really care), but it wasn't THAT bad (and I had Flowmaster 40's). Seems like a good medium between neck breaking take off's and reasonable RPM's (plus in a 1/4 mile with a 26" tire I hit the finish at ~6000ish). I'm using the same 3rd member in my Cougar with a wide ratio Toploader. I have a Detroit Locker in that chunk, and would never bother with a LSD again. The Locker is absolutely great and I don't have a single complaint or regret about going with it. So, my favorite combination is a 3.89 Detroit Locker.