Re: 5.13 Gears Anyone???
[Re: Sb Valiant]
#1357795
12/23/12 06:56 PM
12/23/12 06:56 PM
|
Joined: Oct 2009
Posts: 1,267 North, Alabama
D-50
pro stock
|
pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
|
I run mine in the 1/8 and shift at 6800 and cross the finish line at 6700-6800. It has 5.14 and a M/T 315 60 Drag Radial, about 30 in tall.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
|
|
|
Re: 5.13 Gears Anyone???
[Re: Sb Valiant]
#1357798
12/23/12 10:47 PM
12/23/12 10:47 PM
|
Joined: Dec 2006
Posts: 4,647 aotearoa
rebel
master
|
master
Joined: Dec 2006
Posts: 4,647
aotearoa
|
Quote:
Does anyone think 4.88's would be the better and safer choice for a 11 or 10 sec car?
i run 4.88 in my junk which is running low 9's. shift @ 7k cross the line at 7200 with32" tall slicks.
|
|
|
Re: 5.13 Gears Anyone???
[Re: Sb Valiant]
#1357801
12/24/12 12:15 AM
12/24/12 12:15 AM
|
Joined: Mar 2007
Posts: 1,608 Rudolph, Ohio
moparguy7074
top fuel
|
top fuel
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
|
Quote:
Does anyone think 4.88's would be the better and safer choice for a 11 or 10 sec car?
I have 4.30 gears in my 10.9x car with 29x9 rear tires. My car crosses at 63-6400 in the quarter.
|
|
|
Re: 5.13 Gears Anyone???
[Re: moparguy7074]
#1357802
12/24/12 12:25 AM
12/24/12 12:25 AM
|
Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
|
Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
|
Well right off the bat if you have gained 1000 rpm of stall with the same engine combo, your converter is pooched. You need a new tach too. Without engine/car combo details nothing else much useful can be done here. Just because it will turn 7000 plus doesn't mean it is doing anything there but making noise. Kevin
|
|
|
Re: 5.13 Gears Anyone???
[Re: Sb Valiant]
#1357808
12/24/12 03:27 PM
12/24/12 03:27 PM
|
Joined: Aug 2003
Posts: 43,230 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,230
Bend,OR USA
|
When you put the dial indicator on the retainers to see how much lift you have take the time to record the duration at .050 from oepning to closing, in other words watch the dial incator , when it reaches .050 on the opening write down the numbers it has before or after top dead center and the same on the closing, write down how much after bottom dead center it reaches .050 before closing. Do both valves, intake and exhaust and post the results on here We will be able to to tell you exactly what the duration is at.050 and how much, if any, the cam is advanced or retarded BTW, you will need a piston stop and a degree wheel, you will probally need to take the crankshaft pulleys off to mount and set up the degree wheel As far as your results with all those changes, it doesn't suprise me that it spun the tires and didn't run as good as it did the firts time I would put it back, the motor parts, not the gear changes, and see if it runs as good as it did the first time If it does don't make any other changes until you max the tuneup and set up you have that runs good Once your thier then do ONE change at a time, not a bunch of changes I've seen .25 canges in E.T. by swapping accelerator pump squirters Lots of things to try on race cars, more better change them one at a time
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
|
|