|11-04-2012 01:32 PM|
a set of 4.88's (with the tall 30" drag radials) will make this car into a complete different animal.
Now you will see how a tunnel rammed Willys can run.
|11-04-2012 01:28 PM|
Very good Stuff. There is a 112Mph in your car.. More with a few upgrades and yup, now you got some good places to look at . it will come around for you. Rome wasn't built in a day.
All my stuff is a work in progress too. Good luck...
|11-04-2012 01:02 PM|
330 ft: 5.1348
1/8 et: 7.9061
1/8 mph: 88.15
1000 et: 10.3382
1000 mph: 100.13
¼ et: 12.4147
¼ mph: 107.53
|11-04-2012 12:30 PM|
|11-04-2012 12:05 PM|
I cannot read it. Please type in the data.
Hate to be critical guy, but your lack of attention detail is probabily 90% of the cars problem.
Hard to get to the root of the tuning problem when you dance around it and take the long hard route with
"politician spin" (half truths, bad facts, spin on data, etc)
I hope you take this in the constructive manor, it is intended.
One looks like 89.15MPh and 100.33 mph (1000 ft) 107 in the 1/4"
If I 'am reading that right:
This indicates the car is dieing progressively as it goes down the track
starting at or just before trhe 1/8th point and gets progressively worse.
Once clear shows you let off the gas before the end.
To get a valid accurate MPH at the strip you must keep your foot on the gas 66 feet after the finish line.
Or you will get a low inacurate MPH.
The MPH tells the horsepower. The track is much like a dyno test but requires consistant driving.
The more time slips the better. Post only your data, not the other lane..
the car has the potential to run 113.32 mph. once corrected and will
run faster and quicker when you get BIGGER better carbs, mufflers etc.
easy 11's @115-117MPH when fixed up.
|11-04-2012 12:00 PM|
|11-04-2012 11:11 AM|
|11-04-2012 10:43 AM|
not fer nothing.. but could you all be barking up the wrong tree..
the one lonely 107mph is telling me.. it might not be intake/fuel related, and yes I could be wrong.. as I'm here and his car is there..
but are the valves floating.. just a friendly guess..
|11-04-2012 08:02 AM|
I remember a long time ago my friend got a 130MPH on hs 12sec car once.
It does happen.
But from your numbers the car is wanting to go 113 Mph in the 1/4
but something is killing it.
What about the 1/8th mile data? what is the variance in the 1/8th MPH?
88.83MPH is a good 1/8th mile MPH (its at least in the program)
The car starts out well but flattens out at some point about 1/2 way down.
101 MPH sucks for that car. (there is a problem)
any 1000ft data? All this stuff can be analyzed. You definatly have a top end power robber, to find.
The air fuel ratio needs work. (those carbs suck on a T ram anyway)
(carbs-fuel system, (volume, limitiation))
could be spark scatter/crossfire. (ignition cap ionization, usually from too large plug gap and or too hot a coil, or poor cap/rotor phasing)
could be a fubared transmission or torque converter (no top end MPH)
could be a valvetrain issue.
The mufflers definatly suck- you will see from testing
once you find the other cork(s).
Your car should be running like a raped ape, but its got a problem.
Can you post the complete data from some time slips?
|11-04-2012 06:17 AM|
|11-03-2012 09:54 PM|
|F-BIRD'88||In a previous thread you said the car ran 107MPH.... Which is it 101 MPH or 107 MPH?|
|11-03-2012 07:26 PM|
M/T says not to run their tires after being on a dyno
Don;t blame them at all. The dyno rollers are very hard on tires. Big point of friction and heat
(loss of energy)
But in this case the dyno test and drag test time slip agree. Something is eating all your horsepower.
These are areas I would look at. don;t overlook basic engine problems like ignition etc etc.
When you find the problem and fix it, and ditch those choking carbs and mufflers the car should run 115 to 117MPH in the 1/4 mile.
@117MPH with 30" M/T's and 3.90 gears, it will only be reving 5475RPM .
This motor wants to rev 6800+ rpm thru the traps @117MPH that means you need some
4.88 to 5.13 gears (30" tall tires) Put some gear in it.
This car must be about as much fun as watching paint dry.
With 5.13:1 gears..... NOW you got a reason to have a overdrive transmission.
Until you get some 4.88+++ gears there is no useful purpose for overdrive, in this car, with that high reving motor.
With 30" tires and only 3.90 gears YOU ARE ALREADY IN OverDrive as far as this motor is concerned.
with the right changes this car is a easy mid 11 sec @115-117MPH all street trim car.
|11-03-2012 07:19 PM|
Tranny::: That doesnt tell you anything. it still can be fubared.
and may be. These tranys have big issues.
My car picked up big time when I ditched the lame th700r4 for a th-350.
th700r4s are dogs. I don;t care who built it. Or how much it cost.
A power robbing internal trans issue is very common.
With only 3.90 gears why do you need overdrive?
This motor wants to rev ...OD is useless on this motor.
Flowmasters suck. get something else. anything else. Magnaflow, dynomax.
uncap it you'll see. Every other muffler on the market is BETTER.
Lock out the distributor 36deg locked fixed timing. Why are you asking at what rpm? The thing does not move with rpm when locked.
Its 36deg BTDC all the time. Get a ignition power interupt switch so it don;t "kickback" Be sure the GM starter motor brace/bracket is installed.
Lock out the emch advance and set the locked timing at 36deg BTDC
simple--- it will idle and drive much much better and launch harder.
Ditch the 450 carbs. thy are way too small and all wrong for a T ram. 650-750cfm
1.8 60ft is lame, that converter isn;t working. the car is leaving like a snale
the locked timing will help.
88.83MPH equals 113MpH in the 1/4 mile.
that 1/8th mph x 1.27 equals 1/4 mph.
That means something is sucking the hell out of the horsepower.
Typical of a th700r4 that hasa internal issue or fubared torque converter.
typical of a tunnel ram with those carbs on it.
typical of excessive exhaust restriction ( flowmasters)
you are missing 100hp and 10+++MPH the 1/8th to 1/4 mile MPH
possible fuel starvation. pressure means nothing without flow.
flow test your fuel system thru a test orrifice (after you ditch the carbs)
"I rarely get into third at the track" I guess not..... the motor is dying half way down the track. 101MPH should be 113++++++.
Are you sure there is not a rag or two in the intake manifold?????
this car should be going mid 11's at 115+++++MPH.
|11-03-2012 06:55 PM|
|vinniekq2||what happens to your fuel pressure? 13.5 is lean but acceptable,just wondering if the fuel volume is adequate? low 12s at 101 is not very good horse power wise but very good et wise.Its acting like a very small engine for mph but et indicates it jumps off the line? whats your 60 foot time? cam specs? time on valve springs?|
|11-03-2012 05:22 PM|
|wwilliams181||I'd put a couple of nitrous plates on it and let it eat!|
|This thread has more than 15 replies. Click here to review the whole thread.|