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Im In The Process Of Putting An Eaton And Gears In My 08.it Is Magnacharged,but Im Debating To Go 3.73 Like The Gibbs Trucks or 3.90?i Want To Get The Most Out Of It For The 1/4.
What Do You Guys Think?one Thing For Sure,these Limited Slip 3.23s Got To Go :(
3.90 I think it will work good.
3.90s by far
go with the 3.90s youlle be happy you did.
I would go 4.10's on 28 inch slicks for the 1/4. Or you could do 3.73's on 26 inch slicks. I have used both of the above with nice results. I do not have any experiance with 3.90's though so maybe someone that has ran them will chime in.
go to 4.10s. ive got em and like them. we've installed several sets at the shop with no negative feedback.
Why Do People Say Not To Go That High In Gearing With Forced Induction?? Thats Why I Was Debating Towards The 3.90s.
ive got 4.10s with f/i and my truck seems to like ot .i have a centrifical charger and it could use em down low were i have like turbo lag.thats were i see the most improvement.
actually if im not mistaken most of the ss trucks have 410s from the factory.and theyres alot of them with f/i putting down some numbers.i think youll be fine.but i think farmtruc had issues with 410s with his turbo setup ,he went back to a higher gear.
It's not higher gear it's lower....just a higher number.
I'd say 4.30's or 4.56's but I like a lot of sidewall (IE 30").
Update:detroit Tru Trac With 4.10 Going In:) THANKS GUYS FOR DA INFO.
I would do 3.90s over 4.10s or higher...only because with your tranny, you will be shifting into 4th gear before the end of the traps, hence loosing a few tenths that it takes for the tranny to shift. 3.90s should put you at the upper end of the RPM range as you pass the traps in 3rd gear...
But still--you'll love the 4.10s and TrueTrack!
just go wit 390s chevromec lol