|
|
|
Re: Question for the 9 second small-block NA guys
[Re: Guitar Jones]
#1580289
02/21/14 06:30 PM
02/21/14 06:30 PM
|
Joined: May 2004
Posts: 2,864
IN
Irun5snd8th
master
|
master
Joined: May 2004
Posts: 2,864
IN
|
I think you will be fine. I went 9.72 136 mph at 3000 lbs with 16X32's and a 4.88 at 7200. Keep in mind that your converter affects the finish line rpm as well. percentage of slip etc. I have since picked up a few mph in the 1/8th so Im expecting it to go 140ish and be around 7400
AFCO, Rons Fuel Injection sponsored Dodge Challenger
Mention Street Lethal Motorsports
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: Otherlane]
#1580292
02/23/14 12:02 AM
02/23/14 12:02 AM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
I run a 428Sb with a 28x10 and 4.56 gears running high 9s.Shifting at 7500 and going though the traps at 8000. The car seems like its running out of steam. I was told by my engine builder to set the car up to run 7400 out the back door. That's where is made peak hp. I think i'm going to try a set of 4.10s
Set up your gear to run thru the traps at 10% above
max HP rpm
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: MR_P_BODY]
#1580293
02/23/14 11:29 AM
02/23/14 11:29 AM
|
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
moparguy7074
top fuel
|
top fuel
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
|
Quote:
Quote:
I run a 428Sb with a 28x10 and 4.56 gears running high 9s.Shifting at 7500 and going though the traps at 8000. The car seems like its running out of steam. I was told by my engine builder to set the car up to run 7400 out the back door. That's where is made peak hp. I think i'm going to try a set of 4.10s
Set up your gear to run thru the traps at 10% above
max HP rpm
So he should be going thru at 8100?  Seems a little higher than necessary isn't it?
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: moparguy7074]
#1580298
02/23/14 01:07 PM
02/23/14 01:07 PM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
Quote:
I run a 428Sb with a 28x10 and 4.56 gears running high 9s.Shifting at 7500 and going though the traps at 8000. The car seems like its running out of steam. I was told by my engine builder to set the car up to run 7400 out the back door. That's where is made peak hp. I think i'm going to try a set of 4.10s
Set up your gear to run thru the traps at 10% above
max HP rpm
So he should be going thru at 8100? Seems a little higher than necessary isn't it?
There are plenty of pros that say 10% higher.. if
you dont want to.. dont... but rpm is HP.. if your
set up for it
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: pittsburghracer]
#1580299
02/23/14 02:14 PM
02/23/14 02:14 PM
|
Joined: May 2005
Posts: 1,977
Apollo, PA.
B1MAXX
top fuel
|
top fuel
Joined: May 2005
Posts: 1,977
Apollo, PA.
|
Quote:
Quote:
Quote:
Quote:
I run a 428Sb with a 28x10 and 4.56 gears running high 9s.Shifting at 7500 and going though the traps at 8000. The car seems like its running out of steam. I was told by my engine builder to set the car up to run 7400 out the back door. That's where is made peak hp. I think i'm going to try a set of 4.10s
Set up your gear to run thru the traps at 10% above
max HP rpm
So he should be going thru at 8100? Seems a little higher than necessary isn't it?
I don't know why guys think this is necessary. I'm not going to say there aren't engines out there that NEED high rpm but come-on now. Test your combo at the track shifting at a lower rpm and you may really be pleased with the results. I know I was and I only changed from 6800 to 6400. I was young once and I too put a few rods out thru the side of some engine blocks. 
Maybe it's cause you run .550 lift street cams 
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: pittsburghracer]
#1580300
02/23/14 07:14 PM
02/23/14 07:14 PM
|
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340
master
|
master
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
|
I had mine geared for street use,but it worked great at the track to.8.75 w 3.91 and 5500 stall on 28x10.5. Hit 1/4 traps at 7000 rpm and 140mph also had 727 tf at the time.
Last edited by fishy340; 02/23/14 07:16 PM.
|
|
|
Re: Question for the 9 second small-block NA guys
[Re: 10 o to go]
#1580304
02/24/14 02:48 PM
02/24/14 02:48 PM
|
Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
|
I Win
Joined: Jan 2003
Posts: 32,394
|
Quote:
Quote:
I had mine geared for street use,but it worked great at the track to.8.75 w 3.91 and 5500 stall on 28x10.5. Hit 1/4 traps at 7000 rpm and 140mph also had 727 tf at the time.
140 mph wow 
pretty sure he is boosted, mine runs 140+ at 7000 NA, but it's a whole lot lighter
|
|
|
|
|
|
|
