rear gear ratio

astikhossw · 07-22-2013, 10:41 PM

Hey guys i need i little help with gear selection for running superstreet,i have a 5.67 gear in my car now and the engine revs up to 8100 rpm in the 1/4 and my speed is about 129, but my engine peaked hp is at 7600 to 7700 rpm on the dyno should i go with a 5.43 to lower the rpm and increase the mph or leave it as is to run superstreet.

C and W Racing · 07-23-2013, 08:02 AM

If it was my car, I would change the gear. I'm assuming you are running a small block with that much gear. In my super gas car, I run a 4.10 and have been thinking of trying a 3.89
Chuck

astikhossw · 07-23-2013, 11:11 AM

It is a ford v-6 that i have been running in superstreet a little at 2450 lbs.,but i have been running the 5.67 gear and was just wondering if the trend is to get the mph up as much as possible and still keep the engine in are above peak hp.Thanks

cdh124 · 07-24-2013, 07:53 AM

Quote:

Originally Posted by C and W Racing

If it was my car, I would change the gear. I'm assuming you are running a small block with that much gear. In my super gas car, I run a 4.10 and have been thinking of trying a 3.89
Chuck

Chuck,
What size tire are you running?
Doug Humes

C and W Racing · 07-24-2013, 08:04 AM

I run a Hoosier 33.5/17-16 co7 compound
Chuck

supergas4 · 08-07-2013, 01:29 PM

a 6cyl.runs 10.90 at s/st weight ?

astikhossw · 08-07-2013, 10:43 PM

yep as low as 2000 lbs and it can run 10.08 130 mph wide open.

Adger Smith · 08-09-2013, 09:00 PM

Yep a V-6 can run fast. All it takes is HP.
It is not Super Street and it is a little heavier than 2,000 lbs and it is limited to a 750 carb.
[ame="http://www.youtube.com/watch?v=eZPI6eCN8pE"]968et143mph - YouTube[/ame]

The rear gear is: 6.33 In SS/DS it runs @ 3200 lbs

astikhossw · 08-10-2013, 11:47 AM

The sweet sound of a v-6 making power,to bad they do'nt make any more parts for them.What kind of power are you making and at what rpm.With a 750 carb. and 6.33 gear must be pretty high.

mattexner · 08-13-2013, 09:34 PM

5.43 will only kill 200 rpm. 5.14 or a 5.29 should put you where you want to be.

07-22-2013, 10:41 PM	#1
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 264 Likes: 2 Liked 17 Times in 8 Posts	rear gear ratio Hey guys i need i little help with gear selection for running superstreet,i have a 5.67 gear in my car now and the engine revs up to 8100 rpm in the 1/4 and my speed is about 129, but my engine peaked hp is at 7600 to 7700 rpm on the dyno should i go with a 5.43 to lower the rpm and increase the mph or leave it as is to run superstreet.

07-23-2013, 08:02 AM	#2
C and W Racing Senior Member Join Date: Jul 2007 Posts: 554 Likes: 5 Liked 10 Times in 1 Post	Re: rear gear ratio If it was my car, I would change the gear. I'm assuming you are running a small block with that much gear. In my super gas car, I run a 4.10 and have been thinking of trying a 3.89 Chuck

07-23-2013, 11:11 AM	#3
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 264 Likes: 2 Liked 17 Times in 8 Posts	Re: rear gear ratio It is a ford v-6 that i have been running in superstreet a little at 2450 lbs.,but i have been running the 5.67 gear and was just wondering if the trend is to get the mph up as much as possible and still keep the engine in are above peak hp.Thanks

07-24-2013, 08:04 AM	#5
C and W Racing Senior Member Join Date: Jul 2007 Posts: 554 Likes: 5 Liked 10 Times in 1 Post	Re: rear gear ratio I run a Hoosier 33.5/17-16 co7 compound Chuck

08-07-2013, 01:29 PM	#6
supergas4 Member Join Date: Jun 2010 Posts: 159 Likes: 0 Liked 6 Times in 5 Posts	Re: rear gear ratio a 6cyl.runs 10.90 at s/st weight ?

08-07-2013, 10:43 PM	#7
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 264 Likes: 2 Liked 17 Times in 8 Posts	Re: rear gear ratio yep as low as 2000 lbs and it can run 10.08 130 mph wide open.

08-09-2013, 09:00 PM	#8
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,348 Likes: 434 Liked 677 Times in 261 Posts	Re: rear gear ratio Yep a V-6 can run fast. All it takes is HP. It is not Super Street and it is a little heavier than 2,000 lbs and it is limited to a 750 carb. [ame="http://www.youtube.com/watch?v=eZPI6eCN8pE"]968et143mph - YouTube[/ame] The rear gear is: 6.33 In SS/DS it runs @ 3200 lbs __________________ Adger Smith (Former SS) Last edited by Adger Smith; 08-09-2013 at 09:04 PM. Reason: sp

08-10-2013, 11:47 AM	#9
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 264 Likes: 2 Liked 17 Times in 8 Posts	Re: rear gear ratio The sweet sound of a v-6 making power,to bad they do'nt make any more parts for them.What kind of power are you making and at what rpm.With a 750 carb. and 6.33 gear must be pretty high.

08-13-2013, 09:34 PM	#10
mattexner Junior Member Join Date: May 2009 Location: Pasadena, Texas Posts: 12 Likes: 0 Liked 0 Times in 0 Posts	Re: rear gear ratio 5.43 will only kill 200 rpm. 5.14 or a 5.29 should put you where you want to be.