RPM at the stripe??
#1602167
04/02/14 03:35 PM
04/02/14 03:35 PM
|
Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
OP
I Live Here
|
OP
I Live Here
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
|
I'm going over the finish line at 7300 and would like to see it around 66-6700 rpm.Could this be done by going from a 31 inch tall tire to a 33 inch tall tire?? Would also like to loosen the stall but that would increase the RPM at the stripe. Now have a Dana with 4:10 & 31 inch tall tire. Peak Tq is around 5000 RPM and HP is 6200
HEMI-ITIS has no cure. My condition is fully BLOWN!!
|
|
|
Re: RPM at the stripe??
[Re: oldiron]
#1602172
04/02/14 05:22 PM
04/02/14 05:22 PM
|
Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
OP
I Live Here
|
OP
I Live Here
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
|
I think I see a set of 10.5w X 33 in my future OR,,,would a set of 3:73's with a looser converter be better???
Last edited by hemi-itis; 04/02/14 05:38 PM.
HEMI-ITIS has no cure. My condition is fully BLOWN!!
|
|
|
Re: RPM at the stripe??
[Re: hemi-itis]
#1602173
04/02/14 07:27 PM
04/02/14 07:27 PM
|
Joined: Oct 2003
Posts: 4,013 South Park, Pa.
68LAR
master
|
master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
|
Because of tire clearance, I was looking at dropping down to a 4.30 or 4.10 gear. I'm going thru the traps at close to 6500 with 4.56 and a 29" tall tire. My concern is what affect this would have on my short times. Remember, I've got a heavy stick car. Don''t mean to hi-jack this post. Just thinking out loud on the web.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
|
|
|
Re: RPM at the stripe??
[Re: 68LAR]
#1602174
04/02/14 07:39 PM
04/02/14 07:39 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Because of tire clearance, I was looking at dropping down to a 4.30 or 4.10 gear. I'm going thru the traps at close to 6500 with 4.56 and a 29" tall tire. My concern is what affect this would have on my short times. Remember, I've got a heavy stick car. Don''t mean to hi-jack this post. Just thinking out loud on the web.
Your gonna loose torque due to ratio... but with a stick you can jack up the revs... will you see the change... maybe not(on the torque) but your revs will drop
|
|
|
Re: RPM at the stripe??
[Re: hemi-itis]
#1602176
04/02/14 10:07 PM
04/02/14 10:07 PM
|
Joined: Mar 2006
Posts: 9,835 MI, usa
dvw
master
|
master
Joined: Mar 2006
Posts: 9,835
MI, usa
|
Quote:
I'm going over the finish line at 7300 and would like to see it around 66-6700 rpm.Could this be done by going from a 31 inch tall tire to a 33 inch tall tire?? Would also like to loosen the stall but that would increase the RPM at the stripe. Now have a Dana with 4:10 & 31 inch tall tire. Peak Tq is around 5000 RPM and HP is 6200
Al, that must be a inefficient converter. I go through at 6900 with 4.10/10.5x31W/147 mph. Flash stall is 5700 rpm Doug
|
|
|
Re: RPM at the stripe??
[Re: hemi-itis]
#1602183
04/03/14 08:18 AM
04/03/14 08:18 AM
|
Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
top fuel
|
top fuel
Joined: Nov 2009
Posts: 2,177
ill
|
Quote:
I'm going over the finish line at 7300 and would like to see it around 66-6700 rpm.Could this be done by going from a 31 inch tall tire to a 33 inch tall tire?? Would also like to loosen the stall but that would increase the RPM at the stripe. Now have a Dana with 4:10 & 31 inch tall tire. Peak Tq is around 5000 RPM and HP is 6200
WOW! That's a ton rpms if that's correct wit 410 gear ! I think the vert you got is in need of repairs
|
|
|
Re: RPM at the stripe??
[Re: SSDAcuda]
#1602185
04/03/14 11:00 AM
04/03/14 11:00 AM
|
Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
OP
I Live Here
|
OP
I Live Here
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
|
Quote:
Quote:
Quote:
I'm going over the finish line at 7300 and would like to see it around 66-6700 rpm.Could this be done by going from a 31 inch tall tire to a 33 inch tall tire?? Would also like to loosen the stall but that would increase the RPM at the stripe. Now have a Dana with 4:10 & 31 inch tall tire. Peak Tq is around 5000 RPM and HP is 6200
Al, that must be a inefficient converter. I go through at 6900 with 4.10/10.5x31W/147 mph. Flash stall is 5700 rpm Doug
Exactly. Al sometimes the weight of the car and the gear have opposite effects. I thought you bought a racepak, and if you hook it up you can see converter slippage at the stripe. Will tell you facts. With that said, I would try a 4.30 and the car will tell you the answer...
Almost finished installing the Racepak,that was one of my winter upgrades.Still have a week or so before I get into the chassis shop for those upgrades.Car won't make a pass until I get this stuff squared away
HEMI-ITIS has no cure. My condition is fully BLOWN!!
|
|
|
Re: RPM at the stripe??
[Re: hemi-itis]
#1602187
04/03/14 02:18 PM
04/03/14 02:18 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
To be honest I wouldnt change anything till you get the racepac installed and see if your tack is just off which very well could be your issue
|
|
|
Re: RPM at the stripe??
[Re: MR_P_BODY]
#1602188
04/03/14 06:15 PM
04/03/14 06:15 PM
|
Joined: Mar 2006
Posts: 9,835 MI, usa
dvw
master
|
master
Joined: Mar 2006
Posts: 9,835
MI, usa
|
All these RPM/gear/stripe numbers are useless without the MPH. If I have the car slowed to run 9.50@143 it only turns 6700 instead of 6900 at 147. Doug
|
|
|
Re: RPM at the stripe??
[Re: dvw]
#1602190
04/03/14 11:31 PM
04/03/14 11:31 PM
|
Joined: Jan 2004
Posts: 8,251 fredericksburg,va
cudaman1969
master
|
master
Joined: Jan 2004
Posts: 8,251
fredericksburg,va
|
Quote:
All these RPM/gear/stripe numbers are useless without the MPH. If I have the car slowed to run [Email]9.50@143[/Email] it only turns 6700 instead of 6900 at 147. Doug
like i said et means nothing mph determines trap rpms. watched some old films of 1964 super stockers, they ran 11.60s at 130 mph. a lot of difference then and now. today some cars run FAST out the back door.
|
|
|
|
|