C4 and gears

SlowJoe · 11-20-2009, 07:02 AM

I am getting ready to put a c4 in my car. It has 4.10s. Are they to low? I do run 28 tall tires

Craig K. · 11-20-2009, 08:55 AM

really depends on were your red line is if your talking about drag racing.
Ideally you cross the line in top gear at red line - or this is what I always went after.

If your talking about daily driving the car with some freeway use, even with a mod motor it will be running some good rpm.

I think we have an rpm calculator in the Faq's section you can take a look there or I am sure there are some you can find on line.
C4 final gear should be 1:1

QWKSNKE · 11-20-2009, 04:04 PM

Put your car in 4th gear and drive down the road. That is what it will be like with a C4

rtusnake · 11-20-2009, 04:24 PM

Why are you doing a c4? I would do the 4r70 and have overdrive. Believe you will be ok on your gear setup with a c4 though

03slobra · 11-21-2009, 10:11 AM

my car turns 7300 rpm with the c4 in the 1/4 with 4.10s

SlowJoe · 11-21-2009, 06:04 PM

Tryed in 4th and its like 3300 rpm at 55 mph. It would love the gas! Dont know

JUICED SVT · 11-21-2009, 06:16 PM

Quote:

Originally Posted by rtusnake

Why are you doing a c4? I would do the 4r70 and have overdrive.

x2 on the 4r70w and add a good stall

coupe · 11-24-2009, 12:01 PM

I recommend 3.55 max for a 3speed auto that's also street/highway driven.

11-20-2009, 07:02 AM	#1
SlowJoe Mind Blowing Join Date: Jun 2006 Location: Dawsonville Ga Posts: 3,913	C4 and gears I am getting ready to put a c4 in my car. It has 4.10s. Are they to low? I do run 28 tall tires __________________ Slow Joe Racing 2008 dodge ram 5.7 HEMI 1993 lx with a 289 and a 3 speed on the floor WTB 1955 t-bird project

11-20-2009, 08:55 AM	#2
Craig K. Nothing new here Join Date: Dec 2004 Location: Senoia, GA Posts: 2,990	really depends on were your red line is if your talking about drag racing. Ideally you cross the line in top gear at red line - or this is what I always went after. If your talking about daily driving the car with some freeway use, even with a mod motor it will be running some good rpm. I think we have an rpm calculator in the Faq's section you can take a look there or I am sure there are some you can find on line. C4 final gear should be 1:1 __________________ 1974 Triumph TR6 1985 Monte Carlo SS 1986 Mustang GT 2011 KIA Optima GTS

11-20-2009, 04:04 PM	#3
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Put your car in 4th gear and drive down the road. That is what it will be like with a C4 __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

11-20-2009, 04:24 PM	#4
rtusnake Halfshaft Killer Join Date: Mar 2005 Location: The Kingdom Posts: 3,910	Why are you doing a c4? I would do the 4r70 and have overdrive. Believe you will be ok on your gear setup with a c4 though __________________ 03 Cobra 06 F250 (\__/) (='.'=) (")_(")

11-21-2009, 10:11 AM	#5
03slobra Senior Member Join Date: Nov 2006 Posts: 488	my car turns 7300 rpm with the c4 in the 1/4 with 4.10s __________________ Preston 1947 mercury 2door coupe 331w/tko 600 project 2003 f350 5in lift 6.0 with upgraded stuff!!!

11-21-2009, 06:04 PM	#6
SlowJoe Mind Blowing Join Date: Jun 2006 Location: Dawsonville Ga Posts: 3,913	Tryed in 4th and its like 3300 rpm at 55 mph. It would love the gas! Dont know __________________ Slow Joe Racing 2008 dodge ram 5.7 HEMI 1993 lx with a 289 and a 3 speed on the floor WTB 1955 t-bird project

11-24-2009, 12:01 PM	#8
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	I recommend 3.55 max for a 3speed auto that's also street/highway driven. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein