whats better 390's or 410's..

SRT-8

New Member
Established Member
Joined
Apr 28, 2008
Messages
203
Location
ASSWATER,CA
i have a stock s-197 5sp gt...and was wondering whats better 390's or 410's?....plz help me decide :banana:
 

=fast=

New Member
Established Member
Joined
Jun 30, 2005
Messages
676
Location
houston
i been wanting to ask too... i have 4.10 it came with the car and i been thinking to change it to 3.9, but dont know.
 

LOVESBOOST

New Member
Established Member
Joined
Jan 17, 2008
Messages
752
Location
Frederick, MD
i been wanting to ask too... i have 4.10 it came with the car and i been thinking to change it to 3.9, but dont know.

just out of curiousity, why would you change? if its for gas mileage or rev to high, you won't see much difference between the 390's and 410's.


I say go with the 410's
 

ponygt65

Multi-Quotin' Fool
Established Member
Joined
Apr 28, 2005
Messages
4,937
Location
Central CA
With the 4.10 @ 80MPH you are only at 2660 RPMS in fifth. (HWY MPG)

OP - if you are staying N/A or going to make a track whore power adder, then I would go 4.10s. If going power adder and mostly street, I wouldn't go above 3.73s
 

SRT-8

New Member
Established Member
Joined
Apr 28, 2008
Messages
203
Location
ASSWATER,CA
410's it is..im hoping to do every bolt on i can do...i have some gm's in my area that need a beating...haha
 

ponygt65

Multi-Quotin' Fool
Established Member
Joined
Apr 28, 2005
Messages
4,937
Location
Central CA
410's it is..im hoping to do every bolt on i can do...i have some gm's in my area that need a beating...haha

I know a good shop/tuner in CLovis if you're interested. Does alot of New edge and S197 work.

Just an FYI.
 

ZChaos0026

New Member
Established Member
Joined
Nov 14, 2006
Messages
241
Location
Crystal River, FL
I had 4.10's on my 02 gt and got horrible gas mileage. I have 3.73's on my new one and i get 24 mpg hwy and it made a big difference in my acceleration. I also plan on getting some FI shortly, so that also played into my decision.
 

Users who are viewing this thread



Top