![SEARCH](http://www.mustangworks.com/images/search.png)
![The Mustang Works](http://www.mustangworks.com/images/mw_footer_logo.gif)
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
![]() |
#1 |
Registered Member
Join Date: Sep 2002
Location: cent.wis
Posts: 203
|
![]() I took my car to the dyno for some carb tuning, we made 10+ pulls, came up with 251rwhp. We were thinking that we were losing some power because my stock ford lifters were collapsing a bit, or my new c4 with kevlar bands were slipping a little yet. Does this look a little low anyway. stock 302,tfs track heat heads,tfs stage2 cam,victor jr,proform 650,all msd stuff,1 3/4 LT's,dumps,c4 dynamic 5k stall,4.10's. the car is gutted with a 6pt bar. I was hoping to get sub 14's but not with these power numbers.
|
![]() |
![]() |
![]() |
#2 |
Mustangs
Join Date: Jul 2000
Posts: 1,938
|
![]() Yeah i'd say that is pretty low, Did they have a wide-band o2 sensor hooked up? Something isn't right if the power is that low, maybe the dyno wasn't calibrated correctly. If the car isn't missing or pinging, if i was you i'd just take it to the track. You can't BS on how fast it actually is, but i have heard of some dyno numbers saying low or high numbers (depending on corrections and calibration) and the car running completely different.
__________________
2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem ![]() 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 ![]() 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock) |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Sep 2002
Location: cent.wis
Posts: 203
|
![]() We did have the wide band o2 plugged in. But later had problems with the sensor. We were able to get the jetting dialed in though. I bet my 89 gt stock can make these numbers. Somethings not right. All is new from top to bottom and is running perfect. maybe my combo is crap? The shop owner said that the numbers aren't law get to the track and see what it does. After I get new lifters. Someone turn on the snowmelter.....
|
![]() |
![]() |
![]() |
#4 | |
Registered Member
Join Date: May 1999
Posts: 5,246
|
![]() Quote:
251rwhp is low for the combination, provided it's all put together right and tuned right. You probably have about 310hp at the crank. A lot better than stock, but probably up to 10% or so less than you should. If the C-4 is slipping enough to show up on a dyno, the tranny would have been shot by the end of tuning. I'm not familiar enough with very high stall converters to say how they play into the performance numbers. Your hp numbers are more than adaquate to get you into the 12s with a 1.6 - 60ft. |
|
![]() |
![]() |
![]() |
#5 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
|
![]() Something isnt right.
I made 254rwhp and 298rwtq with ported stock heads,stock cam,explorer intake etc... My current combo similar to yours put down 301rwhp and 330rwtq. My new combo wich includes some head work on my Canfields and my FTI custom cam should put down 320rwhp and 340rwtq. What is your timing set at?
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
![]() |
![]() |
![]() |
#6 |
Registered Member
Join Date: Sep 2002
Location: cent.wis
Posts: 203
|
![]() I should have also said that that was at 5500rpm. The graph was still going up at that point. I didn't want to run it any higher with only an hour or so of run time since rebuilding the short block. The dyno guy also thought that the converter could be the culprit. But I will get a new set of lifters and wait for spring. Get to the track and see what we can figure out. We also got it jetted correctly, changed springs in the dist, and messed with timing a bunch. I now understand some of the valuable info a dyno can provide.
|
![]() |
![]() |
![]() |
#7 |
Registered Member
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
|
![]() heh, yea that cam should pull past 6k no problem, thats where the 302 would peak in my opinion.....friend of mine is having some troubles with his c4 also, it was built by "ger" well they went out of buisness shortly after? Now he's having problems, with a h/c/i injected, and 125 nitrous, it wont stall at it's rating, and it's already burned something up, the cooler is one of the best money buys......i tried to talk him out of that conversion
![]() hey dark 5.0, do you still run that explorer intake?
__________________
X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear |
![]() |
![]() |
![]() |
#8 |
Registered Member
Join Date: Oct 1999
Location: Pierre Part, La. U.S.A.
Posts: 1,850
|
![]() I have heard that a converter will lie to the dyno. Don't worry about the dyno #s. Track testing is the only real way to tune a car. My new combo only shows 280hp on the anlizer. I ran 12.60 @ 111mph not being able to shift the car. I am suppose to have 350hp. I know that I don't.
__________________
88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid ![]() |
![]() |
![]() |
![]() |
#9 |
Registered Member
Join Date: Sep 2002
Location: cent.wis
Posts: 203
|
![]() The shop owner said the same thing. It's really just baseline to measure from. The converter I hope is a quality piece. I bought it from dynamic, it was $600+ but I don't have any time on the car so will have to see. I was hoping it will flash pretty high. And in the end if the c4 doesn't work out, I will get a tremec. The cam is lame. But with stock pistons that was all I could do. I was thinking of adding a 100 shot to it too. I was just curious as to what you people thought. 88workcar nice to see you back.
|
![]() |
![]() |
![]() |
#10 |
Undescribable
Join Date: Sep 1998
Location: Ft Myers Fla
Posts: 1,539
|
![]() you only took it to 5500? that half the trouble there. also auto's don't show good hp number with a high stall converter. get it to the track and you will make your goal very easily.
__________________
Rice Haters Club Member #101 |
![]() |
![]() |
![]() |
#11 |
Registered Member
Join Date: Nov 1998
Location: Houston, Tx.
Posts: 3,887
|
![]() My car hit low 13's/104 at the track with 280/293 on the DynoJet. I'm hoping for a little better now with a new cam and intake manifold. We'll see.
Also might add that the 80% driveline efficiency that Unit 5302 was using is really more for 4-5 speeds. I think the C-4 (especially with a higher stall) is more like 75-77.5% efficiency indicating a little higher flywheel brake hp. Rev
__________________
'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe Last edited by Rev; 02-26-2006 at 04:03 PM.. |
![]() |
![]() |
![]() |
#12 |
Registered Member
Join Date: Sep 2002
Location: DEER PARK, TX
Posts: 2
|
![]() you said you have a "5K" stall......and they pull to 5500, I'd say get some et's and use the analyzer.....
|
![]() |
![]() |
![]() |
#13 |
Registered Member
Join Date: Sep 2002
Location: cent.wis
Posts: 203
|
![]() I only wanted to run it up to 5k until the motor had some time on it. But, like a friend of mine from Iowa said.,"there are 2 types of motors, one that's blowed up, and one that's gonna blow up". Well back to the drawing board. Because she went south a couple of days ago.
|
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Dyno numbers good (at least for me) | Rev | Stang Stories | 6 | 02-22-2005 09:21 PM |
Darius' dyno numbers | drudis | Power Adders | 7 | 08-27-2004 04:09 PM |
disapionted with dyno numbers | 302crew | Windsor Power | 7 | 08-13-2003 10:22 AM |
Stock 351 powered Lightning Dyno Numbers??? | daveGT | Windsor Power | 1 | 06-14-2002 09:51 PM |
Powerdyne Dyno numbers and continuing frustration | 1995MGTS | Windsor Power | 17 | 03-31-2002 12:59 PM |