Re: Down on Power
[Re: camastomcat]
#1312219
09/29/12 10:29 AM
09/29/12 10:29 AM
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Joined: Jan 2005
Posts: 866 Winnipeg ,Mb. CA.
chryco
OP
super stock
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OP
super stock
Joined: Jan 2005
Posts: 866
Winnipeg ,Mb. CA.
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Quote:
I would go with more stall like 5800-6000, less timing, like 32*, stock jetting 92's square and start there. Like one guy said, you may need a 456, but I think 8's are in your future with the right tune up.
Carb was used and set up on the dyno as was the timing ......saw it myself .
http://www.youtube.com/watch?v=9rG0doYzstE
Last edited by chryco; 09/29/12 10:30 AM.
Gas is fer washin' parts ....Alky`s fer drinkin' ...Nitro`s fer Racin'!
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Re: Down on Power
[Re: chryco]
#1312220
09/29/12 10:40 AM
09/29/12 10:40 AM
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Joined: Nov 2004
Posts: 4,330 Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Check the ignition timing. Try rolling the wires in the trigger. Go with the way that gives you the most timing.
Your corrected HP is 880. Appears you actual HP on dyno was 817. This could account for the bad MPH. 139 MPH it just aint seeing any HP.
You are not going to set the world on fire with a Powerglide in that car unless you get everything dead on. You need to be in the 7,300 RPM at the finish line. The car should be in the upper 140's to over 150 when everything is good and in good air. I would want more gear probably a 4.88. This will help tremendously. Put some gear in that car and check the dumb stuff and you will be on your way.
Also judging from your dyno numbers. There was 50 HP in the altitude correction. So when you actually run in good air you may need more jet. Bad air less. Best thing is to jet for peak MPH. Don't worry about the other numbers. Go up 2 front and back. If it slows down start going down. Keep going til it runs it's best. Then go up 1 for a little insurance.
Leon
Last edited by Leon441; 09/29/12 10:44 AM.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Down on Power
[Re: Leon441]
#1312222
09/29/12 11:13 AM
09/29/12 11:13 AM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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A happy dyno Is a proud dyno!! 800+ hp at the crank = @ 700 @ the wheel! acting like it is down by 150 hp at the wheel!! maybe the brakes are dragging?? or the trans went south what is the trap rpm?? 6800??
410- to- 456s wont do much for ya, a little yes, not no sec tho!!
Last edited by dennismopar73; 09/29/12 11:15 AM.
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Re: Down on Power
[Re: Cab_Burge]
#1312229
10/17/12 12:49 AM
10/17/12 12:49 AM
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Joined: Jan 2005
Posts: 866 Winnipeg ,Mb. CA.
chryco
OP
super stock
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OP
super stock
Joined: Jan 2005
Posts: 866
Winnipeg ,Mb. CA.
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Hemiroids like and need more rear gear than wedges do 4.88 or 5.13 in my opinion
I`m startin' to think that way , but I don`t think I`m going to see the gains I`m looking for ....... I still haven`t leak the motor down . That`ll tell the tail I`m sure. Thanks for the suggestions , keep em comin` Chryco
Last edited by chryco; 10/17/12 12:50 AM.
Gas is fer washin' parts ....Alky`s fer drinkin' ...Nitro`s fer Racin'!
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Re: Down on Power
[Re: camastomcat]
#1312230
10/17/12 01:18 AM
10/17/12 01:18 AM
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Joined: Apr 2005
Posts: 12,271 Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
I would go with more stall like 5800-6000, less timing, like 32*, stock jetting 92's square and start there. Like one guy said, you may need a 456, but I think 8's are in your future with the right tune up.
I'm in this frame of mind as well.
Converter too tight, not enough gear.
1.39 60's? There are 3300#, 530-560hp, cars going in this range and faster.
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Re: Down on Power
[Re: chryco]
#1312232
10/17/12 01:35 AM
10/17/12 01:35 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I would do a fuel flow test to see how much time it takes to fill a gal... for some reason your down about 200 hp
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Re: Down on Power
[Re: chryco]
#1312236
10/17/12 07:58 AM
10/17/12 07:58 AM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Have you thought about having it chassis dyno'd ? Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: Down on Power
[Re: deaks]
#1312237
10/17/12 09:39 AM
10/17/12 09:39 AM
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Joined: Jan 2003
Posts: 13,496 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,496
Marion, South Carolina [><]
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Looks like gearing to me. I think you need a minimum of a 4.56 gear, maybe a 4.88 in it. The timing looks fine. Mine runs the best w/ 34-35 degrees in it. I wouldn't touch the converter until you change the gear.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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