GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Questions about some mods.

Thread Tools
 
Search this Thread
 
Old Nov 7, 2010 | 07:36 PM
  #51  
regency's Avatar
Thread Starter
TECH Fanatic
iTrader: (15)
 
Joined: Nov 2005
Posts: 1,961
Likes: 3
From: Alexandria, LA
Default

ok well some results in!!

Not too disappointed but not too happy either! After seeing i needed to do a good burnout cause the track was so cold, i finally got it to:
1.59 - 60ft
7.550 - 1/8
88.9 - mph
11.98 - 1/4
110 - mph
Now i know this is a good timeslip and the 60' is good, but 11.98 @ 110??!!!!!! Thats 3 mph slower than with the 4.10's and 28x11.5x16 ET STREETS. Seems like the tires are growing a whole lot. I know the tune is for 4.10's not 4.56's but its also tuned for 275-45-20(29.8") and these slicks i have are 29.7" (29.5x10.5x15S ET DRAGS). Also this is in negative DA and the times with the 4.10's and 28's was like 1000' DA

Ohh and i sprayed a 100 shot Nitro Daves with HSW 90mm plate went 11.36 @ 117 with a 1.62 - 60'

Last edited by regency; Nov 7, 2010 at 07:46 PM.
Reply
Old Nov 7, 2010 | 07:44 PM
  #52  
regency's Avatar
Thread Starter
TECH Fanatic
iTrader: (15)
 
Joined: Nov 2005
Posts: 1,961
Likes: 3
From: Alexandria, LA
Default

i know gettin off the line faster will lower the MPH, but i was just wanting to go faster and its slower now...lol

Looking at some slips i done another 11.98 the same day as the 11.92 it goes like this...
1.68 - 60'
7.60 - 1/8
90.07 - mph
11.98 - 1/4
111.89 - mph
Reply
Old Nov 7, 2010 | 08:07 PM
  #53  
dlt76028's Avatar
12 Second Truck Club
15 Year Member
iTrader: (13)
 
Joined: Sep 2007
Posts: 5,883
Likes: 2
From: Crowley, TX
Default

thats weird, I would think you would be faster with that low 60'. But slower and dropping 3mph isn't right. Is the motor hurt?
Reply
Old Nov 7, 2010 | 08:10 PM
  #54  
regency's Avatar
Thread Starter
TECH Fanatic
iTrader: (15)
 
Joined: Nov 2005
Posts: 1,961
Likes: 3
From: Alexandria, LA
Default

havent really looked in it in a while, but changed oil a few days before and nothing unusual in the color or in the filter. Seems to sound like it always has, minus the bearings in the alt.

Im really thinking its the tires
Reply
Old Nov 7, 2010 | 08:20 PM
  #55  
dlt76028's Avatar
12 Second Truck Club
15 Year Member
iTrader: (13)
 
Joined: Sep 2007
Posts: 5,883
Likes: 2
From: Crowley, TX
Default

yea I just read that. it's definitely the huge slicks and not having your shift points changed for 4.56s
Reply
Old Nov 7, 2010 | 08:23 PM
  #56  
regency's Avatar
Thread Starter
TECH Fanatic
iTrader: (15)
 
Joined: Nov 2005
Posts: 1,961
Likes: 3
From: Alexandria, LA
Default

does it shift off the MPH or RPM or both??
Reply
Old Nov 7, 2010 | 08:31 PM
  #57  
dlt76028's Avatar
12 Second Truck Club
15 Year Member
iTrader: (13)
 
Joined: Sep 2007
Posts: 5,883
Likes: 2
From: Crowley, TX
Default

Originally Posted by regency
does it shift off the MPH or RPM or both??
i think it has to meet both to shift.
Reply
Old Nov 11, 2010 | 06:21 PM
  #58  
regency's Avatar
Thread Starter
TECH Fanatic
iTrader: (15)
 
Joined: Nov 2005
Posts: 1,961
Likes: 3
From: Alexandria, LA
Default

any more thoughts about this fellas????
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
andrewlong
Tuning, Diagnostics, Electronics, and Wiring
1
Nov 9, 2016 09:38 AM
projectnightcrawler
GM Drivetrain & Suspension
1
Sep 30, 2015 10:49 PM
andrewlong
Powerstroke Diesel Performance
0
Sep 8, 2015 10:25 PM
Forcefed81
GM Parts Classifieds
0
Sep 8, 2015 10:02 PM
2004gibbstruck
Silverado SS, Joe Gibbs Editions, SSR
1
Sep 7, 2015 06:05 PM




All times are GMT -5. The time now is 10:58 AM.