gearing for the 1/4 mile

Old 05-10-2013, 12:43 AM
  #1  
hotrod1994
Senior Member
EXPERT BUILDER
Thread Starter
 
Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
Default gearing for the 1/4 mile

sbc should make 450-475 hp at the fly wheel
looking to go through the traps at 6800 to 7000 rpms
3700 lbs er so
3000 stall for now gonna bump it up to 3800
th 350
29 tall tire
right now i have 4.88's
looking for the "ideal" gear ratio for the 1/4 mile
hotrod1994 is offline  
Old 05-12-2013, 01:38 PM
  #2  
BEAST477
Senior Member
RACING JUNKIE
 
BEAST477's Avatar
 
Join Date: Feb 2007
Location: Michigan
Posts: 1,908
Default

Here try this site. it will give you lots of awnsers.

http://www.wallaceracing.com/Calculators.htm
BEAST477 is offline  
Old 05-13-2013, 01:59 PM
  #3  
hotrod1994
Senior Member
EXPERT BUILDER
Thread Starter
 
Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
Default

cool thanks!
hotrod1994 is offline  
Old 05-14-2013, 06:45 AM
  #4  
roadkill2
Senior Member
RACING JUNKIE
 
Join Date: Jan 2012
Posts: 628
Default

Originally Posted by BEAST477
Here try this site. it will give you lots of awnsers.

http://www.wallaceracing.com/Calculators.htm
To all you racers out there, no matter what you race . . The Wallace Link is a mandatory tool in your tool box . . If you dont use it, start . . It's a great source of information and a better tool.
roadkill2 is offline  
Old 05-14-2013, 10:32 AM
  #5  
outlaw256
Senior Member
RACING JUNKIE
 
Join Date: Mar 2008
Location: falkville al
Posts: 1,766
Default

thanks for the info on that calculater sight.never heard of it before.sure does save tons of time just trying ti fiqure out something!!!!!
outlaw256 is offline  
Old 05-22-2013, 07:23 PM
  #6  
hold
Junior Member
SHOW GUEST
 
Join Date: Dec 1969
Posts: 6
Default

hotrod........U dont hav enuf converter for that tire an gear,,,,up it to a 5200 stall minimum maybe more expecially with the weight of car,ur not hitten the tire hard enuf with ur present stall,,, :shock:
hold is offline  
Old 05-22-2013, 09:04 PM
  #7  
bixblk
Senior Member
DYNO OPERATOR
 
bixblk's Avatar
 
Join Date: Dec 2004
Location: Chicagoland area
Posts: 472
Default wallace racing info

Thanks great site and info.....!!!!!
bixblk is offline  
Old 05-23-2013, 07:22 PM
  #8  
hotrod1994
Senior Member
EXPERT BUILDER
Thread Starter
 
Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
Default

its driven on the street too 5200 is a little much isnt it?
hotrod1994 is offline  
Old 05-24-2013, 06:11 PM
  #9  
johnracer
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2005
Location: Rifle Colorado
Posts: 585
Default

Can't be any worse than those 4.88's on the street....
johnracer is offline  
Old 05-24-2013, 07:20 PM
  #10  
bjuice
Administrator
RACING JUNKIE
 
bjuice's Avatar
 
Join Date: Apr 2003
Location: Greenville s.c.
Posts: 3,239
Default

Originally Posted by hotrod1994
its driven on the street too 5200 is a little much isnt it?

yes its way too much...the calculator is on a broad guideline its not 100% sometimes not even close...it has no way of knowing how your engine performs or transfers hp/tq thru the chassis to the rear tires...the traction itself leaves a big question Mark ?? even the brand of tires could throw off the formula.Just too many variables for it to be accurate...trust me I have seen guys run much slower and faster ET'S and Mph's then the calculator shows they should have run.. etc...


If you put a 3,000 rated converter in your 3700 lb car its probably gonna have a little more flash to it. it also has a lot to do with your camshaft.

If you have not purchased your converter yet...Do not purchase an off the shelf converter..

You need to call and have a converter built to the specs of your engine, rear end ratio's etc...


If your stuff is already together 4.88 gear etc... go and run it now and see what its turning thru the traps in high gear.

YOUR NOT AND I REPEAT YOUR NOT gonna slap off the shelf parts in there and run on the numbers...trust me on this and save yourself a bunch of $$$ and headache..do it right the 1st time...all its gonna cost you is a little more time a research
__________________
Bjuice..

"I'M YOUR HUCKLEBERRY ! "
bjuice is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service