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Stock 4.8 802RWHP but valve float now

 
Old 03-21-2014, 06:46 PM
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Originally Posted by CROWN View Post
If you dont mind me asking what does your fuel system consist of? Mainly curious to what size injectors and fuel pump ur running.
+1 would like to know this as well. I'm most likely going to run two bosch 044 pumps for E85 on my stock 4.8 with a 76mm.

Your car is running great, it will be even better soon!
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Old 04-02-2014, 07:12 PM
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120 lb hr and 2 AEM in tank pumps
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Old 04-02-2014, 07:24 PM
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24 psi
Left at 5k rpm at 19.7 lbs.
Reving good with new springs.
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Old 04-02-2014, 07:34 PM
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Getting closer to my 5.99 elusive goal.
Oh yeah broke the factory ring and pinion gears a week ago, put new Richmond Gears in. Same 3.42 ratio.
Drove it 45 miles and went to the track later that day. Same launch settings that broke my stock gears.
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Old 04-02-2014, 07:57 PM
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Kickass 60ft! Damn!
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Old 04-02-2014, 08:18 PM
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is that 1.13 60' DAMN that little 4.8 is working.

that buick and that 60 must be really close to bending the rods

damn! damn! good running car.
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Old 04-02-2014, 11:07 PM
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Nice 60!

However i'm confused on how it's not going quicker then that?

I'm assuming you fixed the valve float issue?
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Old 04-03-2014, 05:23 AM
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Yeah the valve float is fixed. I leave at 20 taper in the boost to 24 withing 0.4 seconds and then at 4 seconds take it back down to 22. The car is hooking good but at the 2 second mark into the run its not pulling the way it should. I will soon have my drive shift sensor installed so I can get a better idea of what's going on.
I don't know what the car weights but guessing 3900
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Old 04-03-2014, 10:38 AM
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That converter must have a **** ton o slippage.
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Old 04-03-2014, 11:39 AM
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Congrats! that 60' is unbelievable! Toss yank or a PTC converter in that pig and run some 5's!
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Old 04-03-2014, 11:51 AM
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It has a PTC converter in it. Once I finish installing my drive shaft sensor then we will have some more info to figure this thing out. Like actual converter slip, if the tires are spinning... where the slope (rate of change) of the drive shift speed is tapering off. Just not enough enough time in my days.
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Old 04-03-2014, 11:56 AM
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I CNC plasma cut my disk a month ago just no time to do the sensor bracket.

Last edited by TurboTerry87gn; 04-03-2014 at 12:04 PM.
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Old 04-03-2014, 12:23 PM
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Originally Posted by TurboTerry87gn View Post
I CNC plasma cut my disk a month ago just no time to do the sensor bracket.
Thats Fancy! Can't you guess with the quick slippage calculator?

http://www.wallaceracing.com/converter-slip.php
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Old 04-03-2014, 06:51 PM
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Originally Posted by Smallblockguy View Post
That converter must have a **** ton o slippage.
Exactly!

The 60ft shows the power is there, however it should go a bit faster then 111mph in the 1/8th......
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Old 04-03-2014, 08:36 PM
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Your slip calculator says around 25%. In a couple weeks when I get the drive shift sensor mounted
that can be verified. I know I need to rev the motor faster to tighten up the converter. Shifted out of first gear at 6950 2nd to 3rd at 6500 way too early and put the motor down to 6000 through the traps.
I headed out to the track tomorrow for some more testing. I will be concerned with shift points more tomorrow and not so much with the tune up.
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Old 04-03-2014, 08:57 PM
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Originally Posted by TurboTerry87gn View Post
I CNC plasma cut my disk a month ago just no time to do the sensor bracket.
NICE, want to make me one of those?lol
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Old 04-03-2014, 09:33 PM
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Originally Posted by TurboTerry87gn View Post
Your slip calculator says around 25%. In a couple weeks when I get the drive shift sensor mounted
that can be verified. I know I need to rev the motor faster to tighten up the converter. Shifted out of first gear at 6950 2nd to 3rd at 6500 way too early and put the motor down to 6000 through the traps.
I headed out to the track tomorrow for some more testing. I will be concerned with shift points more tomorrow and not so much with the tune up.
Just for comparison my 9.5" PTC converter spec'd by dusty has less than 6% slippage at 5800 rpm @ 122 in the 1/8th... I sure wasn't busting out 1.1x 60's though!
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Old 04-03-2014, 10:03 PM
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Here in the near future, my CNC plasma cutting business will be going. I have been designing and making parts for my self and friends for years. I can do 3/8 thick steel 23 by 13 cnc table axis. But soon will have my new plasma for 7/8" thick steel and a table for full sheets to do multiple parts at once.

Last edited by TurboTerry87gn; 04-04-2014 at 08:21 AM.
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Old 04-03-2014, 10:24 PM
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Originally Posted by Forcefed86 View Post
Just for comparison my 9.5" PTC converter spec'd by dusty has less than 6% slippage at 5800 rpm @ 122 in the 1/8th... I sure wasn't busting out 1.1x 60's though!

how are you figuring this?

my calc says

3.25 gear
29" tire
5800 rpm
122mph

is 26.25% slip
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Old 04-04-2014, 06:14 AM
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Very cool setup! That converter is killing you on this combo, I went throught the same thing with my stock 6.0L.

Good Luck!
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